JP4653785B2 - Process for producing 1,4-dihydroxy-2-naphthoic acid - Google Patents

Process for producing 1,4-dihydroxy-2-naphthoic acid Download PDF

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JP4653785B2
JP4653785B2 JP2007193081A JP2007193081A JP4653785B2 JP 4653785 B2 JP4653785 B2 JP 4653785B2 JP 2007193081 A JP2007193081 A JP 2007193081A JP 2007193081 A JP2007193081 A JP 2007193081A JP 4653785 B2 JP4653785 B2 JP 4653785B2
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吉朗 佐藤
聖也 牧野
伸生 依田
佳久平 伊澤
智敬 神山
研一 北條
瑞恵 斉藤
直生 竹友
圭介 古市
秀二 池上
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Meiji Co Ltd
Meiji Dairies Corp
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Description

本発明は、1,4−ジヒドロキシ−2−ナフトエ酸(1,4-Dihydroxy-2-naphthoic acid或いは1,4-Dihydroxy-2-naphthalene carboxylic acid或いは略してDHNAと呼ぶこともある)の工業的製法、及びこの化合物を含有する腸内フローラの改善、乳糖不耐症の腹部不快症状の改善、代謝性骨疾患予防治療に有用な医薬及び飲食品に関する。   The present invention is an industrial application of 1,4-dihydroxy-2-naphthoic acid (sometimes referred to as 1,4-Dihydroxy-2-naphthoic acid or 1,4-Dihydroxy-2-naphthalene carboxylic acid or DHNA for short). The present invention relates to a preparation and a medicament and a food and drink useful for improving intestinal flora containing this compound, improving abdominal discomfort of lactose intolerance, and preventing and treating metabolic bone disease.

これまでの母乳栄養児と人工栄養児の腸内フローラの比較研究から、ビフィズス菌が人の健康に有用であることが示唆されてきた。現在では、各種消化管疾病等や老化に伴いビフィズス菌が有意に低下することと、腸内ビフィズス菌の増殖を促進することが発癌抑制、腸内腐敗の抑制、感染症の防止等に有効であることが確認されてきている。したがって、腸内のビフィズス菌を選択的に増殖させることは、健康維持や各種成人病等の予防・治療の観点から極めて重要であるといえる。   A comparative study of the intestinal flora of breastfeeding and artificially fed infants has suggested that Bifidobacteria are useful for human health. At present, bifidobacteria are significantly reduced with various gastrointestinal diseases and aging, and the growth of intestinal bifidobacteria is effective in suppressing carcinogenesis, intestinal rot, and preventing infectious diseases. It has been confirmed that there is. Therefore, it can be said that selective growth of Bifidobacteria in the intestine is extremely important from the viewpoint of maintaining health and preventing / treating various adult diseases.

有用なビフィズス菌を増殖促進せしめる物質、いわゆるビフィズス因子については、従来よりいくつかの物質が研究され、報告されている。例えば、母乳中に含まれるN−アセチルグルコサミン(非特許文献1)、ペプチド関連物質(非特許文献2、3)、人参抽出物(非特許文献4、5)、糖関連物質(非特許文献6)等がある。
しかしながら、これらビフィズス菌の増殖促進物質の調製は、いずれも煩雑であり、ビフィズス菌のみを選択的に増殖させるという作用においても十分とは言えない点があった。
Regarding substances that promote the growth of useful bifidobacteria, so-called bifido factors, several substances have been studied and reported. For example, N-acetylglucosamine (Non-Patent Document 1), peptide-related substances (Non-Patent Documents 2 and 3), ginseng extract (Non-Patent Documents 4 and 5), sugar-related substances (Non-Patent Document 6) contained in breast milk ) Etc.
However, the preparation of these bifidobacteria growth-promoting substances is complicated, and there is a point that it is not sufficient in the effect of selectively growing only the bifidobacteria.

そこで、本発明者等はビフィズス菌の増殖を選択的に促進する化合物について研究を重ねた結果、ある種のナフトキノン誘導体及びナフタレン誘導体が各種ビフィズス菌(Bifidobacterium longum, B.breve, B.adolescentis, B.bifidum, B.infantis, B.animalis, B.pseudolongum等)に対して強い増殖促進活性を有することを見出した。また、これら既知の化合物のほかに新たなビフィズス菌増殖促進物質についても明らかにしており、その物質は、プロピオニバクテリウム(Propionibacterium)属菌により菌体内外に産生する高活性のビフィズス菌増殖促進物質で、従来未知の新規物質である2−アミノ−3−カルボキシ−1,4−ナフトキノンであることを確認した(特許文献1)。さらに、2−アミノ−3−カルボキシ−1,4−ナフトキノン等が骨粗鬆症等の代謝性骨疾患の予防治療薬として有用であることも見出した(特許文献2)。   Therefore, as a result of repeated research on compounds that selectively promote the growth of bifidobacteria, the present inventors have found that certain naphthoquinone derivatives and naphthalene derivatives have various bifidobacteria (Bifidobacterium longum, B. breve, B. adolescentis, B. .bifidum, B.infantis, B.animalis, B.pseudolongum, etc.) In addition to these known compounds, a new bifidobacterial growth-promoting substance has also been clarified, which is a highly active bifidobacterial growth-promoting substance produced inside and outside the cell by Propionibacterium spp. As a substance, it was confirmed that it was 2-amino-3-carboxy-1,4-naphthoquinone, which is a novel substance that has not been known (Patent Document 1). Furthermore, it has also been found that 2-amino-3-carboxy-1,4-naphthoquinone and the like are useful as preventive and therapeutic agents for metabolic bone diseases such as osteoporosis (Patent Document 2).

一方、DHNAは、染料、顔料及び感光材料として工業材料として有用であることが知られており、これまでにも有機化学合成法により種々の合成法が開発されてきた(特許文献3、4、5等)。しかし、これまでの合成法は、有機溶媒中高温高圧下での反応あるいは、触媒などとして飲食用には適さない試薬等を用いる必要があった。これらの方法で製造されたDHNAから製造に用いた溶媒や試薬を完全に除去することは困難であり、従来の製造方法で得られたDHNAを飲食品や医薬に用いることは考えられていなかった。
特開平8-98677号公報 国際公開第01/28547号パンフレット 特開昭57-128655号公報 特開昭59-186942号公報 特開昭60-104037号公報 Proc.Soc.Exp.Biol.Med.,90,219(1955) Am.J.Clin.Nutr.,32,1428(1974) Agric.Biol.Chem.,48,2159(1984) 日農化誌,55,499(1981) Chem.Pharm.Bull.,(Tokyo)14,1191(1966) 東北福祉大紀要,10,313(1986)
On the other hand, DHNA is known to be useful as an industrial material as a dye, pigment, and photosensitive material, and various synthetic methods have been developed by organic chemical synthesis methods (Patent Documents 3, 4, and 4). 5). However, the conventional synthesis methods required the use of reagents and the like that are not suitable for food and drink as a reaction in an organic solvent under high temperature and high pressure or as a catalyst. It is difficult to completely remove the solvents and reagents used in the production from the DHNA produced by these methods, and it has not been considered to use the DHNA obtained by the conventional production method for foods and drinks and medicines. .
JP-A-8-98677 International Publication No. 01/28547 Pamphlet JP-A-57-128655 JP 59-186942 JP 60-104037 A Proc. Soc. Exp. Biol. Med., 90, 219 (1955) Am.J.Clin.Nutr., 32,1428 (1974) Agric. Biol. Chem., 48, 2159 (1984) Nissan Kagaku, 55,499 (1981) Chem. Pharm. Bull., (Tokyo) 14, 1191 (1966) Tohoku Welfare Bulletin, 10, 313 (1986)

本発明者は、ビフィズス菌に特異的な増殖促進作用を示す各種化合物についてさらに検討した結果、1,4−ジヒドロキシ−2−ナフトエ酸(DHNA)がプロピオニバクテリウム(Propionibacterium)属菌により菌体内外に大量に産生されることを見出すと共に、この培養物から採取した1,4−ジヒドロキシ−2−ナフトエ酸含有組成物、又は1,4−ジヒドロキシ−2−ナフトエ酸もしくはその塩が、牛乳不耐症の牛乳の摂取時にみられる腹部不快症状を低減する作用を有すること、さらには骨芽細胞の分化と機能発現を促進し、破骨細胞の形成を抑制することから代謝性骨疾患の予防治療に有用であることを見出し、本発明を完成するに至った。1,4−ジヒドロキシ−2−ナフトエ酸の塩としては、薬学的又は食品学的に許容できる塩が挙げられ、代表的な塩には、酢酸塩、ベンゼンスルホン酸塩、安息香酸塩、重炭酸塩、乳酸塩、クエン酸塩などが含まれるが、これらは例示であって、本発明はこれらの塩に限定されない。   As a result of further investigation on various compounds exhibiting a growth-promoting action specific to bifidobacteria, the present inventor found that 1,4-dihydroxy-2-naphthoic acid (DHNA) was produced by Propionibacterium spp. In addition to finding that it is produced in large quantities inside and outside, 1,4-dihydroxy-2-naphthoic acid-containing composition or 1,4-dihydroxy-2-naphthoic acid or its salt collected from this culture is not milk-free. Prevention of metabolic bone disease by reducing the abdominal discomfort seen when ingesting resistant milk, and further promoting osteoblast differentiation and function and inhibiting osteoclast formation It has been found useful for treatment, and the present invention has been completed. Examples of the salt of 1,4-dihydroxy-2-naphthoic acid include pharmaceutically or food-acceptable salts. Typical salts include acetate, benzenesulfonate, benzoate, and bicarbonate. Salts, lactates, citrates and the like are included, but these are exemplary, and the present invention is not limited to these salts.

すなわち、本発明は、1,4−ジヒドロキシ−2−ナフトエ酸を産生する微生物を培養し、培養物中に1,4−ジヒドロキシ−2−ナフトエ酸を産生させ、これを採取することを特徴とする1,4−ジヒドロキシ−2−ナフトエ酸の製造法を提供するものである。
また、本発明は、上記の製造法により得られた1,4−ジヒドロキシ−2−ナフトエ酸含有組成物を提供するものである。
また、本発明は、上記の製造法により得られた1,4−ジヒドロキシ−2−ナフトエ酸含有組成物、又は1,4−ジヒドロキシ−2−ナフトエ酸もしくはその塩を有効成分として含有する腹部不快症状改善用飲食品、腹部不快症状改善剤、整腸剤、代謝性骨疾患予防治療用飲食品又は代謝性骨疾患予防治療剤を提供するものである。
また、本発明は、上記の製造法により得られた1,4−ジヒドロキシ−2−ナフトエ酸含有組成物、又は1,4−ジヒドロキシ−2−ナフトエ酸もしくはその塩の、腹部不快症状改善用飲食品、腹部不快症状改善剤、整腸剤、代謝性骨疾患予防治療用飲食品又は代謝性骨疾患予防治療剤の製造のための使用を提供するものである。
That is, the present invention is characterized by culturing a microorganism that produces 1,4-dihydroxy-2-naphthoic acid, producing 1,4-dihydroxy-2-naphthoic acid in the culture, and collecting this. A process for producing 1,4-dihydroxy-2-naphthoic acid is provided.
The present invention also provides a 1,4-dihydroxy-2-naphthoic acid-containing composition obtained by the above production method.
Further, the present invention provides a 1,4-dihydroxy-2-naphthoic acid-containing composition obtained by the above production method, or abdominal discomfort containing 1,4-dihydroxy-2-naphthoic acid or a salt thereof as an active ingredient. The present invention provides a symptom-improving food / beverage product, an abdominal discomfort symptom-improving agent, an intestinal preparation, a food / beverage product for metabolic bone disease prevention / treatment, or a metabolic bone disease prevention / treatment agent.
The present invention also relates to a 1,4-dihydroxy-2-naphthoic acid-containing composition obtained by the above production method, or 1,4-dihydroxy-2-naphthoic acid or a salt thereof for improving abdominal discomfort symptoms. Product, an abdominal discomfort symptom improving agent, an intestinal adjuster, a food and drink for metabolic bone disease prevention treatment, or a metabolic bone disease prevention treatment treatment.

さらに本発明は、上記の製造法により得られた1,4−ジヒドロキシ−2−エナフトエ酸含有組成物、又は1,4−ジヒドロキシ−2−ナフトエ酸もしくはその塩の有効量を投与することを特徴とする腹部不快症状の処置方法、整腸方法又は代謝性骨疾患の処置方法を提供するものである。   Furthermore, the present invention is characterized by administering an effective amount of a 1,4-dihydroxy-2-ennaphthoic acid-containing composition obtained by the above production method, or 1,4-dihydroxy-2-naphthoic acid or a salt thereof. The present invention provides a method for treating abdominal discomfort, an intestinal adjustment method, or a treatment method for metabolic bone disease.

本発明に係るDHNAの工業的製法は、微生物に由来することから、安全性に優れており、DHNAを高濃度に含む本組成物を経口摂取することで、腸内フローラの改善はもとより、牛乳の摂取時にみられる腹部不快症状の改善及び代謝性骨疾患の予防治療にも利用することができる。また、毒性がないことから、長期間摂取することが可能である。   The industrial production method of DHNA according to the present invention is excellent in safety because it is derived from microorganisms, and by ingesting this composition containing DHNA in a high concentration, in addition to improving intestinal flora, milk It can also be used to improve the abdominal discomfort symptoms observed during the intake and preventive treatment of metabolic bone diseases. In addition, since it is not toxic, it can be taken for a long time.

本発明における、1,4−ジヒドロキシ−2−ナフトエ酸(DHNA)を産生する菌の属の例としては、プロピオニバクテリウム(Propionibacterium)、エンテロバクター(Enterobacter)、スポロラクトバチルス(Sporolactobacillus)、バチルス(Bacillus)等があげられる。これらの微生物の多くは、従来より飲食品及び医薬品の製造に用いられてきたものであり、DHNAを含有する飲食品及び医薬品を製造する上でこれらの菌を用いることは好ましい。プロピオン酸菌としては、プロピオニバクテリウム・フロイデンライヒ(Propionibacterium freudenreichii)、プロピオニバクテリウム・トエニー(P. thoenii)、プロピオニバクテリウム・アシディプロピオニシ(P. acidipropionici)、プロピオニバクテリウム・ジェンセニー(P. jensenii)などのチーズ用の菌、プロピオニバクテリウム・アビダム(P. avidum)、プロピオニバクテリウム・アクネス(P. acnes)、プロピオニバクテリウム・リンホフィラム(P. lymphophilum)、プロピオニバクテリウム・グラニュロサム(P. granulosam)などが挙げられる。また、バチルス属の菌としてはバチルス・ズブチリス(Bacillus subtilis)、バチルス・コアギュランス(Bacillus coagulans)などが挙げられる。本発明に使用する微生物としては、プロピオニバクテリウム・フロイデンライヒが好適であり、例えばP. freudenreichii IFO 12424、あるいはP. freudenreichii ATCC 6207が挙げられる。   Examples of the genus of bacteria producing 1,4-dihydroxy-2-naphthoic acid (DHNA) in the present invention include Propionibacterium, Enterobacter, Sporolactobacillus, Examples include Bacillus. Many of these microorganisms have been conventionally used in the production of foods and drinks and pharmaceuticals, and it is preferable to use these bacteria in producing foods and drinks and pharmaceuticals containing DHNA. Examples of propionic acid bacteria include Propionibacterium freudenreichii, Propionibacterium toenii, P. acidipropionici, Propionibacterium, Propionibacterium Cheese fungi such as P. jensenii, Propionibacterium avidum, P. acnes, Propionibacterium lymphophilum, Pro Examples include P. granulosam. Examples of Bacillus spp. Include Bacillus subtilis and Bacillus coagulans. The microorganism used in the present invention is preferably Propionibacterium flodendenreich, such as P. freudenreichii IFO 12424 or P. freudenreichii ATCC 6207.

本発明により、DHNAを製造するには、まずDHNAを産生する能力を有する菌株を、通常の微生物が増殖し得る栄養源を含む培地で好気的又は嫌気的に培養する。栄養源としては従来から微生物の培養に用いられている公知のものが使用できる。特に、脱脂粉乳培地、トリプチケース、フィトン、酵母エキス及びグルコースからなる培地の他、ホエイ粉、或いはそのプロテアーゼ処理物、或いはホエイ蛋白質濃縮物、その処理物及び乳清ミネラルのラクターゼ処理物を主成分とする培地が好適に用いられるが、本発明においては、培地の蛋白源として脱脂粉乳のプロテアーゼ処理物を用いることが最も望ましく、その際、培養時の添加物として、酵母エキス、乳糖の少なくともひとつを使用することで、培養液のDHNA産生量を増大させることができる。また、培養時の添加物として、乳糖の他、グルコース又は乳糖のラクターゼ処理物も使用できるが、脱脂粉乳のプロテアーゼ処理物を培地の主原料に使用した場合には、糖質として乳糖が最も好ましい。以下に、培地原料に脱脂粉乳のプロテアーゼ処理物を用いた場合の培地調製法の一例を示す。   In order to produce DHNA according to the present invention, a strain having the ability to produce DHNA is first cultured aerobically or anaerobically in a medium containing a nutrient source in which normal microorganisms can grow. As the nutrient source, known ones conventionally used for culturing microorganisms can be used. In particular, non-fat dry milk medium, trypticase, phyton, yeast extract and glucose, as well as whey powder, protease-treated product thereof, whey protein concentrate, treated product, and whey mineral lactase-treated product. A medium as a component is preferably used. In the present invention, it is most desirable to use a protease-treated product of skim milk powder as a protein source of the medium. In this case, at least one of yeast extract and lactose is used as an additive during culture. By using one, the DHNA production amount of the culture solution can be increased. In addition to lactose, glucose or lactose-treated lactase-treated product can be used as an additive at the time of cultivation. However, when a protease-treated product of skim milk powder is used as the main raw material of the medium, lactose is most preferable as a carbohydrate. . Hereinafter, an example of a medium preparation method when a protease-treated product of skim milk powder is used as a medium raw material will be described.

脱脂粉乳を10%(w/v)の濃度になるように水で溶解し、プロテアーゼでタンパク質を分解する。使用量は、脱脂粉乳量に対し、0.25%(w/w)とする。分解は、47℃、pH6.8で6時間行い、分解中のpH調整には炭酸カリウム水溶液を用いる。最終的な培地濃度として脱脂粉乳濃度を10%(w/v)に調整し、最後に、酵母エキスを脱脂粉乳量に対し、1〜10%(w/w)、好適には3〜7%(w/w)添加する。   The skim milk powder is dissolved with water to a concentration of 10% (w / v), and the protein is degraded with protease. The amount used is 0.25% (w / w) based on the amount of skim milk powder. The decomposition is carried out at 47 ° C. and pH 6.8 for 6 hours, and an aqueous potassium carbonate solution is used for pH adjustment during the decomposition. Adjust the skim milk concentration to 10% (w / v) as the final medium concentration. Finally, the yeast extract is 1 to 10% (w / w), preferably 3 to 7%, based on the skim milk content. (w / w) is added.

培養方法としては、公知の各種好気的、嫌気的培養方法を用いることができるが、液体培地による好気又は嫌気培養法が大量生産の上から最も好ましい。培養温度は約20〜40℃、培地のpHは中性〜微酸性(好ましくはpH5.5-7.5)の条件下で培養する。液体培養では、培養開始後約1〜5日経過すると培地及び菌体中にDHNAが蓄積される。培養中に乳糖を添加することによりDHNAの産生量は増加する。培養を停止し、直ちにその培養物よりDHNAの採取に供することも可能であるが、好ましくは、培養液を冷却(3〜20℃、より好ましくは約10℃)し、保存(好ましくは2〜4週間程度)することによりDHNAをさらに蓄積させることができる。   As the culture method, various known aerobic and anaerobic culture methods can be used, but an aerobic or anaerobic culture method using a liquid medium is most preferable from the viewpoint of mass production. The culture temperature is about 20 to 40 ° C., and the pH of the medium is neutral to slightly acidic (preferably pH 5.5 to 7.5). In liquid culture, DHNA accumulates in the medium and cells after about 1 to 5 days from the start of culture. The amount of DHNA produced is increased by adding lactose during the culture. Although the culture can be stopped and the DHNA can be immediately collected from the culture, the culture solution is preferably cooled (3 to 20 ° C., more preferably about 10 ° C.) and stored (preferably 2 to 2 ° C.). DHNA can be further accumulated for about 4 weeks).

次に、DHNAの採取方法について説明する。得られた培養物を吸着クロマトグラフィーに付すのが好ましい。吸着剤としては、活性炭や合成吸着剤(例えばダイアイオンHP−20、三菱化学(株)製)などの逆相系の吸着剤を広く使用することができる。まず、吸着剤をカラムに充填し、0.5%(w/v)アスコルビン酸ナトリウム水溶液で洗浄する。次いで、得られた培養物をカラムに添加し(通過液をpassとした)、さらに0.5%(w/v)アスコルビン酸ナトリウム水溶液で水溶性画分を除去する。その後、0.5%(w/v)量アスコルビン酸ナトリウムを添加したエタノールで溶出し、このエタノール溶出画分を濃縮することで、DHNAを高濃度に含む組成物を得ることができる。さらに、精製を行い、純粋なDHAN又はその塩を得ることができる。尚、カラムからのDHNAの溶出液としてエタノールの代わりにメタノールを用いてもよい。   Next, a method for collecting DHNA will be described. The obtained culture is preferably subjected to adsorption chromatography. As the adsorbent, reversed phase adsorbents such as activated carbon and synthetic adsorbent (for example, Diaion HP-20, manufactured by Mitsubishi Chemical Corporation) can be widely used. First, the adsorbent is packed in a column and washed with a 0.5% (w / v) aqueous sodium ascorbate solution. Next, the obtained culture is added to the column (the passing solution is defined as pass), and the water-soluble fraction is removed with a 0.5% (w / v) aqueous sodium ascorbate solution. Thereafter, elution is performed with ethanol containing 0.5% (w / v) amount of sodium ascorbate, and the ethanol-eluted fraction is concentrated to obtain a composition containing DHNA at a high concentration. Furthermore, purification can be performed to obtain pure DHAN or a salt thereof. Note that methanol may be used in place of ethanol as the DHNA eluent from the column.

DHNAの塩としては、薬学的又は食品学的に許容できる塩が挙げられ、代表的な塩には、酢酸塩、ベンゼンスルホン酸塩、安息香酸塩、重炭酸塩、乳酸塩、クエン酸塩などが含まれるが、これらは例示であって、本発明はこれらの塩に限定されない。
DHNAは、DHNA産生菌の培養物中(菌体内及び/又は外)に含有されているので、吸着クロマトグラフィーを適用せずに培養物それ自体をロータリーエバポレーター等を使用し、濃縮することによってDHNAを高濃度に含有する組成物を得ることができる。また、通常の遠心分離法によって培養物から菌体を分離し得られた上清を濃縮することも好ましい。こうして得られた組成物は、利用する形態にあわせ、液状のまま用いてもよいし、粉末状に加工することもできる。
Examples of DHNA salts include pharmaceutically or food-acceptable salts. Typical salts include acetate, benzenesulfonate, benzoate, bicarbonate, lactate, citrate, and the like. However, these are examples, and the present invention is not limited to these salts.
Since DHNA is contained in the culture of DHNA-producing bacteria (inside and / or outside of the cells), the culture itself is concentrated by using a rotary evaporator or the like without applying adsorption chromatography. Can be obtained in a high concentration. It is also preferable to concentrate the supernatant obtained by separating the cells from the culture by a normal centrifugation method. The composition thus obtained may be used in a liquid state or processed into a powder form according to the form to be used.

牛乳を飲んだ後に腹痛や腹鳴、下痢などの腹部不快症状をおこすものを牛乳不耐症と呼ぶが、この中の大部分は牛乳中等の乳糖を摂取したことによって起こる乳糖不耐症に相当する。そして、その原因の多くの場合、小腸ラクターゼ活性の欠乏又は減少によっている。本発明に係る組成物又はDHNAもしくはその塩は、牛乳の摂取時にみられる腹部不快症状を低減する作用を有し、さらには骨芽細胞の分化と機能発現を促進する作用、破骨細胞の形成抑制作用を有し、骨粗鬆症等の代謝性骨疾患の予防治療に有用である。飲食品又は医薬品いずれの形態でも利用することができ、例えば、医薬として直接投与することにより、或いは特定保健用食品等の特別用途食品、栄養機能食品として直接摂取することにより、あるいはまた、各種食品(牛乳、発酵乳、ヨーグルトその他)に添加しておきこれを摂取することによって、腸内フローラの改善や牛乳の摂取時等にみられる腹部不快症状を低減し、また代謝性骨疾患を予防治療することができる。   What causes abdominal discomfort such as abdominal pain, belly and diarrhea after drinking milk is called milk intolerance, but most of this is equivalent to lactose intolerance caused by ingesting milk sugar. To do. And most of the causes are due to a deficiency or decrease in intestinal lactase activity. The composition or DHNA or a salt thereof according to the present invention has an action of reducing abdominal discomfort seen when ingesting milk, and further promotes osteoblast differentiation and functional expression, and formation of osteoclasts. It has an inhibitory action and is useful for the prevention and treatment of metabolic bone diseases such as osteoporosis. It can be used in any form of food and drink or medicine, for example, by direct administration as a medicine, by special intake foods such as foods for specified health use, directly as nutritional functional foods, or various foods Add to (milk, fermented milk, yogurt, etc.) and ingest it to improve intestinal flora, reduce abdominal discomfort seen when ingesting milk, etc., and prevent metabolic bone disease can do.

本発明に係る組成物、又はDHNAもしくはその塩を医薬品として使用する場合には、種々の形態で投与することができる。その形態として、例えば、錠剤、カプセル剤、顆粒剤、散剤、シロップ剤等による経口投与をあげることができる。これらの各種製剤は、常法に従って主剤に賦形剤、結合剤、崩壊剤、滑沢剤、矯味、矯臭剤、溶解補助剤、懸濁剤、コーティング剤などの医薬の製剤技術分野において通常使用しうる既知の補助剤を用いて製剤化することができる。
この製剤をヒトに適用する場合、経口投与するのが好ましい。有効成分であるDHNAの治療有効量は治療される各患者の年齢及び条件によって変動するが、一般にDHNAとして、ヒト体重1kgあたり1日量0.03〜3μg、より好ましくは0.1〜1μg経口投与する。
When the composition according to the present invention, or DHNA or a salt thereof is used as a pharmaceutical, it can be administered in various forms. Examples of the form include oral administration using tablets, capsules, granules, powders, syrups and the like. These various preparations are usually used in the pharmaceutical formulation technical field such as excipients, binders, disintegrating agents, lubricants, taste-masking agents, flavoring agents, solubilizing agents, suspension agents, coating agents, etc. It can be formulated with known adjuvants.
When this preparation is applied to humans, it is preferably administered orally. The therapeutically effective amount of DHNA as an active ingredient varies depending on the age and conditions of each patient to be treated, but generally, as DHNA, a daily dose of 0.03 to 3 μg per kg of human body weight, more preferably 0.1 to 1 μg orally Administer.

本発明に係る組成物、又はDHNAもしくはその塩は、経口投与によって腸内フローラの改善や牛乳の摂取時にみられる腹部不快症状を低減する、代謝性骨疾患を予防又は治療するという所期の目的を達成しうるので、飲食品として使用することができる。そのためには、DHNAを高濃度に含む本発明組成物又はDHNAもしくはその塩を各種補助剤や他の飲食品を用いて、ドリンク、錠剤、その他各種の飲食品にしたり、飲食品に直接添加する等、各種の方法を利用することができる。このように飲食品にすることで、長期間に亘って摂取することが可能であるため、通常の飲食品の他、特定保健用食品等の特別用途食品、栄養機能食品として市販に供することができる。   The composition according to the present invention, or DHNA or a salt thereof, is intended to prevent or treat metabolic bone disease, which improves intestinal flora and reduces abdominal discomfort that is observed when milk is ingested by oral administration. Therefore, it can be used as a food or drink. For that purpose, the composition of the present invention containing DHNA at a high concentration or DHNA or a salt thereof is used as a drink, tablet, or other various foods or drinks using various adjuvants or other foods or drinks, or added directly to foods or drinks. Various methods can be used. Since it can be ingested over a long period of time by making it into a food and drink in this way, it can be provided on the market as a special purpose food such as a food for specified health use and a nutritional functional food in addition to a normal food and drink. it can.

以下、試験例、実施例により本発明をさらに詳しく説明するが、これらは本発明を限定するものではない。   EXAMPLES Hereinafter, although a test example and an Example demonstrate this invention further in detail, these do not limit this invention.

試験例1 DHNA産生菌のスクリーニング
培養条件
脱脂粉乳培地(後記する実施例1に記載)にそれぞれ下記供試菌を摂取し、37℃で18〜72時間、ガスパック法にて嫌気培養した。
(A)Propionibacterium freudenreichii IFO 12424 (培養時間:72時間)
(B)Propionibacterium acidipropionicii IFO 12425 (72時間)
(C)Propionibacterium jensenii IFO 12427 (72時間)
(D)Lactococcus lactis ATCC 10697 (24時間)
(E)Leuconostoc mesenteroides JCM 9700 (24時間)
(F)Lactobacillus acidophilus ATCC 4357 (18時間)
(G)Lactobacillus plantarum IFO 12006 (18時間)
(H)Lactobacillus rhamnosus JCM 1136 (18時間)
(I)Lactobacillus casei ATCC 7469 (18時間)
(J)Bifidobacterium longum ATCC 15707 (18時間)
(K)Bifidobacterium bifidum ATCC 11146 (18時間)
(L)Bifidobacterium adolescentis ATCC 15703 (18時間)
(M)Bifidobacterium breve ATCC 15700 (18時間)
Test Example 1 Screening Culture Conditions for DHNA-Producing Bacteria Each of the following test bacteria was ingested into a skim milk powder medium (described in Example 1 described later), and anaerobically cultured by a gas pack method at 37 ° C. for 18 to 72 hours.
(A) Propionibacterium freudenreichii IFO 12424 (culture time: 72 hours)
(B) Propionibacterium acidipropionicii IFO 12425 (72 hours)
(C) Propionibacterium jensenii IFO 12427 (72 hours)
(D) Lactococcus lactis ATCC 10697 (24 hours)
(E) Leuconostoc mesenteroides JCM 9700 (24 hours)
(F) Lactobacillus acidophilus ATCC 4357 (18 hours)
(G) Lactobacillus plantarum IFO 12006 (18 hours)
(H) Lactobacillus rhamnosus JCM 1136 (18 hours)
(I) Lactobacillus casei ATCC 7469 (18 hours)
(J) Bifidobacterium longum ATCC 15707 (18 hours)
(K) Bifidobacterium bifidum ATCC 11146 (18 hours)
(L) Bifidobacterium adolescentis ATCC 15703 (18 hours)
(M) Bifidobacterium breve ATCC 15700 (18 hours)

DHNA分析条件(HPLC分析)
カラム:C18、充填剤粒径3μm、内径4.6mm、長さ150mm
(C18:インタクト(株)のCadenza CD-C18)
溶離液:アセトニトリル:メタノール:水:酢酸=10:20:200:0.1(5%アンモニア水でpH 7.0に調整)
流速:1.5mL/min
注入量:20μl
検出器:UV254nm
DHNA analysis conditions (HPLC analysis)
Column: C18, packing material particle size 3 μm, inner diameter 4.6 mm, length 150 mm
(C18: Cadenza CD-C18 from Intact Corporation)
Eluent: acetonitrile: methanol: water: acetic acid = 10: 20: 200: 0.1 (adjusted to pH 7.0 with 5% aqueous ammonia)
Flow rate: 1.5mL / min
Injection volume: 20 μl
Detector: UV254nm

HPLCサンプル調製法
各培養液10mlに0.1%(w/v)のアスコルビン酸ナトリウムを添加後、pH7.0に調整し、水で全量を20mlにした後、そのうち3mlを等量のメタノールと混合して、3000rpmで10分間遠心分離し、その上清液を0.45μmのフィルターでろ過した。
HPLC sample preparation method After 0.1% (w / v) sodium ascorbate was added to 10 ml of each culture solution, the pH was adjusted to 7.0, and the total volume was adjusted to 20 ml with water. The mixture was mixed and centrifuged at 3000 rpm for 10 minutes, and the supernatant was filtered through a 0.45 μm filter.

DHNAの定量
HPLCサンプル中のDHNA量は、予め求めた市販のDHNA(和光純薬(株)製)標品の保持時間(13分付近)、及びHPLCのピーク面積とDHNA濃度との関係(検量線)をもとに算出した。
Quantitative determination of DHNA The amount of DHNA in an HPLC sample is determined based on the retention time (around 13 minutes) of a commercially available DHNA (manufactured by Wako Pure Chemical Industries, Ltd.), and the relationship between the HPLC peak area and DHNA concentration (calibration). Line).

その結果、DHNAはプロピオニバクテリウム(A)〜(C)から3.0μg/ml以上検出された。ラクトコッカス(D)、ロイコノストック(E)からは微量に検出されたものの、ラクトバチルス(F)〜(I)、ビフィドバクテリウム(J)〜(M)からは検出することができなかった。すなわち、プロピオニバクテリウムは、本発明に使用しうるDHNA産生菌として望ましいことが確認された(表1)。Bacillus subtilisについても同培地を用い、好気的に培養したところ、培養物にはDHNAが含有されていることが確かめられた。   As a result, DHNA was detected from Propionibacterium (A) to (C) in an amount of 3.0 μg / ml or more. Although it was detected in trace amounts from Lactococcus (D) and Leuconostoc (E), it could not be detected from Lactobacillus (F) to (I) and Bifidobacterium (J) to (M) It was. That is, it was confirmed that propionibacterium is desirable as a DHNA-producing bacterium that can be used in the present invention (Table 1). Bacillus subtilis was also aerobically cultured using the same medium, and it was confirmed that the culture contained DHNA.

Figure 0004653785
Figure 0004653785

実施例1 DHNA含有組成物の製造法
脱脂粉乳を10%(w/v)の濃度になるように水で溶解した脱脂粉乳培地(脱脂粉乳の10重量%還元液)にビール酵母エキス(アサヒビール(株)製)を0.1%(w/v)添加した液50Lを容量5Lの三角フラスコ20本に分注し、121℃、7分間オートクレーブで滅菌した。これらの培地にプロピオニバクテリウム・フロイデンライヒ(Propionibacterium freudenreichii)IFO 12424株の賦活培養液60mlをそれぞれ接種し、37℃で72時間、窒素雰囲気下、嫌気培養したところ、1,4−ジヒドロキシ−2−ナフトエ酸を3μg/ml含有する組成物(50L)が得られた。なお、前記賦活培養液は、TPYG培地(トリプチケース(BBL) 8g、フィトンペプトン(BBL) 3g、ビール酵母エキス5g、L−システイン塩酸塩 0.5g、グルコース 20g、K2HPO4 2g、KH2PO4 3g、MgCl2・6H2O 0.5g、FeSO4・7H2O 10mg、H2O 1000ml、pH6.5)に2%(w/v)のプロピオニバクテリウム・フロイデンライヒ(Propionibacterium freudenreichii)を接種し、37℃で72時間ガスパック法にて嫌気培養することで得る。
Example 1 Method for Producing DHNA-Containing Composition A brewer's yeast extract (Asahi Breweries) was added to a skim milk medium (10% by weight reduced solution of skim milk powder) in which skim milk powder was dissolved in water to a concentration of 10% (w / v). 50 L of 0.1% (w / v) added was dispensed into 20 5-liter Erlenmeyer flasks and sterilized at 121 ° C. for 7 minutes in an autoclave. These media were inoculated with 60 ml of an activated culture solution of Propionibacterium freudenreichii IFO 12424, respectively, and anaerobically cultured in a nitrogen atmosphere at 37 ° C. for 72 hours to obtain 1,4-dihydroxy-2. A composition (50 L) containing 3 μg / ml of naphthoic acid was obtained. Incidentally, the activation culture solution, TPYG medium (trypticase (BBL) 8 g, phytone peptone (BBL) 3 g, brewer's yeast extract 5 g, L-cysteine hydrochloride 0.5g, glucose 20g, K 2 HPO 4 2g, KH 2 PO 4 3 g, MgCl 2 .6H 2 O 0.5 g, FeSO 4 .7H 2 O 10 mg, H 2 O 1000 ml, pH 6.5) and 2% (w / v) Propionibacterium freudenreichii) and inoculated by anaerobic culture at 37 ° C. for 72 hours by gas pack method.

実施例2 DHNA高濃度含有組成物の製造法
脱脂粉乳を10〜20%(w/w)の濃度になるように水で溶解し、プロテアーゼ[アマノA](アマノ製薬(社)製)を脱脂粉乳量の0.25%(w/w)添加し、47℃で6時間酵素分解した。この間、炭酸カリウム水溶液でpH6.8に保持した。85℃、5分間加熱して酵素を失活させた後、脱脂粉乳量が10%(w/w)となるよう水でメスアップした。ビール酵母エキス(アサヒビール(社)製)を脱脂粉乳の5%(w/w)量添加した後、2L容量のファーメンターに1.5Kg分注し、121℃、7分間オートクレーブで滅菌した。ファーメンター中に窒素ガスを上面通気で流し、撹拌は150rpmで行い、培地温度を33℃に調整した。培地温度が33℃に安定したら、プロピオニバクテリウム・フロイデンライヒ(Propionibacterium freudenreichii)ET−3株(平成13年8月9日付で、独立行政法人産業技術総合研究所 特許生物寄託センター(日本国茨城県つくば市東1丁目1番地1 中央第6(郵便番号305−8566))にFERMBP−8115として寄託されている)の凍結濃縮スターターを培地に対し0.05%(w/w)接種し、培養を開始した。途中、培養開始72時間後と96時間後に、培養液に対し、2%(w/w)量の乳糖と、1.3%(w/w)量の乳糖を添加した。33℃で120時間、40%(w/w)炭酸カリウム水溶液でpH6.45に保ちながら窒素雰囲気下で嫌気培養したところ、この時点で、培養液中に30μg/mlのDHNAが産生された。なお、培養開始120時間後のアルカリ消費量は培養液1.5kgに対し、131gであった。さらに、この培養液にアスコルビン酸ナトリウムを培養液の0.5%(w/w)量添加し、炭酸カリウム水溶液でpHを8.0に調整後、10℃まで冷却した。これを10℃で2週間保存した結果、培養液中のDHNAの含量は、40μg/mlまで増加した。凍結濃縮スターターは、プロピオニバクテリウム・フロイデンライヒ(Propionibacterium freudenreichii)ET-3株の賦活培養液(上記脱脂粉乳のプロテアーゼ処理物を主成分とする培養液で33℃で48時間窒素雰囲気下で嫌気培養する)を、培地(脱脂粉乳のプロテアーゼ処理物を主成分とする培養液)に対して2%(w/w)量接種し、33℃で72時間培養し、培養終了後、培地を回収して遠心分離し、菌体を20倍程度に濃縮した。その後、適量を滅菌した容器に分注し、−80℃以下で凍結し、−80℃で保存したものを使用した。
Example 2 Method for Producing Composition Containing High DHNA Concentrated skim milk powder was dissolved in water to a concentration of 10 to 20% (w / w), and protease [Amano A] (manufactured by Amano Pharmaceutical Co., Ltd.) was defatted 0.25% (w / w) of the milk powder was added, and enzymatic degradation was carried out at 47 ° C. for 6 hours. During this time, the pH was maintained at 6.8 with an aqueous potassium carbonate solution. After inactivating the enzyme by heating at 85 ° C. for 5 minutes, it was made up with water so that the amount of skim milk powder became 10% (w / w). After adding a 5% (w / w) amount of skim milk powder to a brewer's yeast extract (manufactured by Asahi Breweries), 1.5 Kg was dispensed into a 2 L-volume fermenter and sterilized by autoclaving at 121 ° C. for 7 minutes. Nitrogen gas was allowed to flow through the fermenter with top aeration, stirring was performed at 150 rpm, and the medium temperature was adjusted to 33 ° C. When the medium temperature stabilizes at 33 ° C., Propionibacterium freudenreichii ET-3 strain (April 9, 2001, National Institute of Advanced Industrial Science and Technology, Ibaraki, Japan) 1-6 Higashi 1-chome Tsukuba City, Prefecture 6 (Postal code 305-8666)) is inoculated with 0.05% (w / w) freeze-concentrated starter of FERMBP-8115) Started. On the way, 2% (w / w) amount of lactose and 1.3% (w / w) amount of lactose were added to the culture solution 72 hours and 96 hours after the start of the culture. When anaerobic culture was performed in a nitrogen atmosphere while maintaining pH 6.45 with 40% (w / w) potassium carbonate aqueous solution at 33 ° C. for 120 hours, 30 μg / ml DHNA was produced in the culture solution at this point. The alkali consumption 120 hours after the start of the culture was 131 g with respect to 1.5 kg of the culture solution. Furthermore, 0.5% (w / w) of sodium ascorbate was added to the culture solution, and the pH was adjusted to 8.0 with an aqueous potassium carbonate solution, and then cooled to 10 ° C. As a result of storage at 10 ° C. for 2 weeks, the content of DHNA in the culture increased to 40 μg / ml. The freeze-concentrated starter is an activated culture solution of Propionibacterium freudenreichii ET-3 strain (a culture solution mainly composed of the protease-treated product of the above skim milk powder at 33 ° C. for 48 hours under nitrogen atmosphere. 2% (w / w) is inoculated to the medium (culture liquid mainly composed of protease-treated skim milk powder) and cultured at 33 ° C. for 72 hours. Then, the cells were centrifuged, and the bacterial cells were concentrated about 20 times. Thereafter, an appropriate amount was dispensed into a sterilized container, frozen at -80 ° C or lower, and stored at -80 ° C.

実施例3 実施例1で得られた組成物のカラムクロマトグラフィーによる濃縮
ダイアイオンHP−20(4L)をカラムに充填し、0.5%(w/v)アスコルビン酸ナトリウム水溶液で洗浄後、実施例1で得られた組成物40Kgをカラムに添加した。次に0.5%(w/v)アスコルビン酸ナトリウム水溶液8Lで水溶性画分を除去後、エタノール12Lを流してDHNAを溶出させた。溶出液にはさらに0.5%(w/v)量アスコルビン酸ナトリウムを添加した。本エタノール画分をエバポレーターで濃縮し、DHNAを115mgを含む10gの本発明組成物を得た。
Example 3 Concentration of the composition obtained in Example 1 by column chromatography Diaion HP-20 (4 L) was packed in a column, washed with 0.5% (w / v) aqueous sodium ascorbate solution, and then carried out. 40 Kg of the composition obtained in Example 1 was added to the column. Next, the water-soluble fraction was removed with 8 L of 0.5% (w / v) sodium ascorbate aqueous solution, and DHNA was eluted by flowing 12 L of ethanol. A 0.5% (w / v) amount of sodium ascorbate was further added to the eluate. The ethanol fraction was concentrated with an evaporator to obtain 10 g of the composition of the present invention containing 115 mg of DHNA.

実施例4 実施例1で得られた組成物のロータリーエバポレーターによる濃縮
実施例1で得られた組成物5Kgに0.5%(w/w)量アスコルビン酸ナトリウムを添加し、ロータリーエバポレーターにて5倍に濃縮したところ、1Kg中にDHNAを15mg含む本発明組成物が得られた。
Example 4 Concentration of the composition obtained in Example 1 by a rotary evaporator 0.5% (w / w) amount of sodium ascorbate was added to 5 kg of the composition obtained in Example 1, and 5% by a rotary evaporator. When concentrated twice, a composition of the present invention containing 15 mg of DHNA in 1 kg was obtained.

実施例1〜3の組成物の製造には、チーズの製造に用いられているプロピオン酸菌を用いているため、実施例1〜3で得られた本発明品をそのまま飲食品として用いることができる。   Since the propionic acid bacteria currently used for manufacture of cheese are used for manufacture of the composition of Examples 1-3, this invention product obtained in Examples 1-3 can be used as food-drinks as it is. it can.

実施例5 DHNAの精製
実施例2で得られた濃縮物をpH4.5に調整した0.5%(w/v)アスコルビン酸ナトリウム水溶液1Lに溶解し、酢酸エチル1Lで3回抽出した。酢酸エチル層をあわせて、無水硫酸ナトリウム200gで脱水後減圧下濃縮した。濃縮物をメタノール80mLに溶解後、その4mLをC18カラムで精製した。保持時間21分から31分のDHNA溶出画分に25%(w/v)となるようにアスコルビン酸ナトリウムを加えた後、減圧下濃縮した。この濃縮物800mLを酢酸エチル300mLで2回抽出し、無水硫酸ナトリウム50gで脱水後減圧下濃縮した。得られた最終精製物を500MHz 1H-NMRにて構造を解析したところDHNAであると同定した。最終的に培養液40LからDHNA 115mgが得られた。
Example 5 Purification of DHNA The concentrate obtained in Example 2 was dissolved in 1 L of 0.5% (w / v) aqueous sodium ascorbate adjusted to pH 4.5, and extracted three times with 1 L of ethyl acetate. The ethyl acetate layers were combined, dehydrated with 200 g of anhydrous sodium sulfate, and concentrated under reduced pressure. The concentrate was dissolved in 80 mL of methanol, and 4 mL of the concentrate was purified with a C18 column. Sodium ascorbate was added to the DHNA elution fraction having a retention time of 21 minutes to 31 minutes to 25% (w / v) and then concentrated under reduced pressure. 800 mL of this concentrate was extracted twice with 300 mL of ethyl acetate, dehydrated with 50 g of anhydrous sodium sulfate, and concentrated under reduced pressure. The structure of the final purified product thus obtained was analyzed by 500 MHz 1 H-NMR and identified as DHNA. Finally, 115 mg of DHNA was obtained from 40 L of the culture solution.

カラム:Capcell Pak C18 SG120, φ50×500mm, Lot.930210 (資生堂(株)製)
移動層:アセトニトリル:メタノール:水:酢酸=20:40:200:0.1(5%アンモニア水でpH 7.0に調整)
温度:室温
流速:100mL/min
注入量:4mL
検出器:UV254nm
<最終精製物のNMRデータ>
1H-NMR (500MHz, MeOH-d4):δ8.39 (1H, d, J=8.3Hz), 8.23 (1H, d, J=8.3Hz), 7.69 (1H, dd, J=8.3, 6.9Hz), 7.60 (1H, dd, J=8.3, 6.9Hz), 7.23 (1H, s)
Column: Capcell Pak C18 SG120, φ50 × 500mm, Lot. 930210 (manufactured by Shiseido Co., Ltd.)
Moving bed: acetonitrile: methanol: water: acetic acid = 20: 40: 200: 0.1 (adjusted to pH 7.0 with 5% aqueous ammonia)
Temperature: Room temperature Flow rate: 100mL / min
Injection volume: 4mL
Detector: UV254nm
<NMR data of the final purified product>
1 H-NMR (500 MHz, MeOH-d 4 ): δ 8.39 (1H, d, J = 8.3 Hz), 8.23 (1H, d, J = 8.3 Hz), 7.69 (1H, dd, J = 8.3, 6.9 Hz), 7.60 (1H, dd, J = 8.3, 6.9Hz), 7.23 (1H, s)

実施例6 急性毒性試験
マウス5匹(5週齢:ICRを購入後、7日間訓化)を用いて実施例2記載のDHNA含有組成物の急性毒性試験を実施した。1日当たり78.3mg/kg(DHNAは、0.9(≒115×(78.3/(10×1000)))mg/kg)を最高投与量として5日間連続投与し、14日間観察したが、死亡は認められず、体重、行動、臓器の解剖所見を調べたが何れも異常がないことを確認した。
Example 6 Acute toxicity test An acute toxicity test of the DHNA-containing composition described in Example 2 was carried out using 5 mice (5 weeks of age: 7 days after purchasing ICR). Although the daily dose was 78.3 mg / kg (DHNA was 0.9 (≈115 × (78.3 / (10 × 1000))) mg / kg), the maximum dose was continuously administered for 5 days and observed for 14 days. No death was observed, and body weight, behavior, and anatomical findings of the organ were examined.

実施例7 DHNAを含有する本発明組成物を配合した食品の調製法(タブレットの調製)
実施例1で得られた組成物10Kgを品温50℃で24時間凍結乾燥し、凍結乾燥粉1Kgを得た。次に同粉末をブドウ糖80%(w/w)と乾燥コーンスターチ10%(w/w)、粉末パラチニット7%(w/w)、クエン酸3%(w/w)から成るタブレット基剤に40%(w/w)配合し、0.5g毎に打錠した。
Example 7 Preparation method of food containing the composition of the present invention containing DHNA (preparation of tablet)
10 kg of the composition obtained in Example 1 was lyophilized at a product temperature of 50 ° C. for 24 hours to obtain 1 kg of lyophilized powder. The powder is then added to a tablet base consisting of 80% glucose (w / w), 10% dried corn starch (w / w), 7% powdered paratinite (w / w) and 3% citric acid (w / w). % (W / w) was mixed and tableted every 0.5 g.

実施例8 DHNAを含有する本発明組成物を配合した食品の調製法(乳飲料の調製1)
生乳10Kgにアスコルビン酸ナトリウム15g及びDHNAを含有する実施例2より得られた組成物125mgを添加し、これを均質化した後に130℃で2秒間殺菌し、100ml毎に容器に充填した。
Example 8 Preparation Method of Food Composed of Composition of the Present Invention Containing DHNA (Preparation of Milk Beverage 1)
125 mg of the composition obtained from Example 2 containing 15 g of sodium ascorbate and DHNA was added to 10 kg of raw milk, homogenized, sterilized at 130 ° C. for 2 seconds, and filled into containers every 100 ml.

実施例9 DHNAを含有する本発明組成物を配合した食品の調製法(乳飲料の調製2)
プロピオニバクテリウム・フロイデンライヒ(Propionibacterium freudenreichii)ET−3株(FERM P-18454)をホエイ粉のプロテアーゼ処理物を主原料とする培地(10重量%ホエイ粉還元液をプロテアーゼ(天野製薬(株)製:アマノA)で2時間タンパク分解(50℃、pH7.0)した溶液にビール酵母エキス(アサヒビール製)を0.1%(w/v)添加した液50Lをジャーファーメンターに供し、121℃、7分間滅菌した)に、賦活培養液60mlを接種し、35℃、pH6.0で90時間、嫌気培養後、0.5%(w/v)のアスコルビン酸ナトリウムを添加することで得られた本発明組成物177.5mlを、生乳9822.5mlに添加し、これを均質化した後に130℃で2秒間殺菌し、100ml毎に容器に充填した(DHNA含量11μg/100ml)。
前記賦活培養液は、培養温度35℃以外は、実施例1と同様の方法で得る。
Example 9 Preparation Method of Food Containing the Composition of the Present Invention Containing DHNA (Preparation of Milk Beverage 2)
Propionibacterium freudenreichii (Propionibacterium freudenreichii) ET-3 strain (FERM P-18454) is a medium containing 10% whey powder protease treatment product as protease (Amano Pharmaceutical Co., Ltd.) Manufactured by Amano A) for 2 hours, 50 L of a solution obtained by adding 0.1% (w / v) brewer's yeast extract (manufactured by Asahi Breweries) to a solution proteolyzed (50 ° C., pH 7.0) was supplied to a jar fermenter. Sterilized at 121 ° C for 7 minutes) by inoculating 60 ml of the activated culture solution, anaerobic culture at 35 ° C and pH 6.0 for 90 hours, and then adding 0.5% (w / v) sodium ascorbate 177.5 ml of the obtained composition of the present invention was added to 9822.5 ml of raw milk, homogenized, sterilized at 130 ° C. for 2 seconds, and filled into containers every 100 ml (DHNA content 11 μg / 100 l).
The activated culture solution is obtained in the same manner as in Example 1 except that the culture temperature is 35 ° C.

実施例10 乳飲料摂取時にみられる腹部不快症状の本発明品による影響1
試験飲料として実施例8で調製した乳飲料を用い、対照飲料として発酵前の培地を用いて同様に調製した乳飲料を用いた。被験者は、牛乳摂取による呼気中水素ガス濃度の測定を行い、小腸のβ-ガラクトシダーゼ活性が低く乳糖不耐症と考えられるヒトを選定した。具体的には、対照飲料400mlによるラクトース負荷試験を行い、呼気中の水素濃度が飲料摂取から6時間までに約20ppm以上増加した15名(男性7名、女性8名、平均年齢28.07±3.41才)を被験者とした。
Example 10 Influence 1 of the Product of the Invention on Abdominal Discomfort Symptoms Seen When Ingesting Milk Beverages 1
The milk beverage prepared in Example 8 was used as the test beverage, and the milk beverage prepared in the same manner using the medium before fermentation as the control beverage. The subjects measured the hydrogen gas concentration in the breath by ingesting milk and selected humans with low β-galactosidase activity in the small intestine and considered to be lactose intolerant. Specifically, a lactose load test using 400 ml of a control drink was conducted, and 15 people (7 men, 8 women, average age 28.07 ±) whose hydrogen concentration in the breath increased by about 20 ppm or more by 6 hours from drinking the beverage. 3.41 years old) was the subject.

被験者は、試験前日22時から試験当日17時まで水以外の飲食をしないように制限した。試験当日10時に対照飲料400mlを経口摂取し、経時的に17時までアンケートによる腹部症状の記入(30分毎)と呼気の採取(1時間毎)を行った。試験飲料の投与は、1週間後に対照飲料の投与と同じ要領にて実施した。なお、被験者には飲料の種類についての事前の告知は一切行わなかった。   The subjects were restricted from eating and drinking other than water from 22:00 on the day before the test to 17:00 on the day of the test. 400 ml of control drink was orally ingested at 10:00 on the day of the test, and abdominal symptoms were entered by questionnaire (every 30 minutes) and expiration was collected (every hour) until 17:00. The test beverage was administered in the same manner as the control beverage after one week. Subjects were not given any prior notice about the type of beverage.

呼気は1L容のコック付テドラ−バッグ(ジーエルサイエンス(株))にて採取し、水素ガスの分析はガスクロマトグラフィー(GC-8A、島津製作所(株))にて行った。分析条件は、カラム:モレキュラーシーブ5A(3mm×2m)、オーブン温度:40℃、キャリアガス:アルゴン、検出器:熱伝導度型検出器(TCD:Thermal Conductivity Detector)とした。
アンケート用紙を各被験者に配布し、30分毎に腹部症状について自己記入方式で調査した。腹部膨満感は、「接取直後に比較して非常におなかが張る」を4、「摂取直後に比較しておなかが張る」を3、「接取直後に比較して少しおなかが張る」を2、「摂取直後に比較して変わらない」を1として数値化し、摂取30分後から6時間までの値を累積した。また、その他の腹部症状として下痢、腹痛、鼓腸(ゴロゴロなる)があった際にはアンケート用紙に併記させた。
Exhaled air was collected with a 1-L tedlar bag with a cock (GL Science Co., Ltd.), and hydrogen gas was analyzed with gas chromatography (GC-8A, Shimadzu Corporation). The analysis conditions were as follows: column: molecular sieve 5A (3 mm × 2 m), oven temperature: 40 ° C., carrier gas: argon, detector: thermal conductivity detector (TCD).
A questionnaire was distributed to each subject, and abdominal symptoms were investigated every 30 minutes in a self-filled manner. For abdominal bloating, 4 are “extremely hungry compared to immediately after taking”, 3 is “tensioned compared to immediately after ingesting”, and 3 “is slightly hungry compared to immediately after taking” 2. “No change compared to immediately after ingestion” was converted into a numerical value as 1, and values from 30 minutes after ingestion to 6 hours were accumulated. In addition, when other abdominal symptoms were diarrhea, abdominal pain, flatulence, it was written on the questionnaire form.

乳飲料摂取から6時間後までの腹部症状を調べたところ、対照飲料摂取において腹部膨満感の累積値が17.93±4.83であったのが、試験飲料では15.93±3.65と有意(wilcoxon検定、p<0.05)に減少した(図1)。また、摂取6時間後までに被験者が膨満感を訴えた回数を観察したところ、対照飲料摂取において3.47±3.11であったものが、試験飲料において2.47±2.90と減少傾向(p=0.108)であった(図2)。同様に、鼓腸(ゴロゴロ感)を訴えた回数も対照飲料摂取において2.87±2.75であったものが、試験飲料において1.47±2.10と有意(p<0.05)に減少した(図3)。その他の腹部症状では、対照飲料摂取では下痢を呈する被験者が2名いたが、試験飲料摂取では下痢を訴える被験者がいなかったほか、対照飲料摂取で腹部不快症状がなかった被験者が2名であったのに対し、試験飲料摂取では6名に増加した(表2)。   When the abdominal symptom was examined 6 hours after the intake of the milk drink, the cumulative value of abdominal fullness was 17.93 ± 4.83 in the intake of the control drink, but 15.93 ± 3.65 in the test drink. And significantly decreased (wilcoxon test, p <0.05) (FIG. 1). In addition, when the number of times the subject complained of fullness was observed by 6 hours after the ingestion, the number of the test drink ingested 3.47 ± 3.11 decreased to 2.47 ± 2.90 in the test drink. It was a trend (p = 0.108) (FIG. 2). Similarly, the number of times complaining of flatulence (feeling of roaring) was 2.87 ± 2.75 in the control drink intake was 1.47 ± 2.10 significantly (p <0.05) in the test drink. Decreased (FIG. 3). As for other abdominal symptoms, there were 2 subjects who showed diarrhea when taking the control beverage, but there were no subjects who complained of diarrhea when taking the test beverage, and 2 subjects who did not have abdominal discomfort after taking the control beverage. On the other hand, the number of test drinks increased to 6 (Table 2).

また、呼気水素濃度の最大上昇量を求めたところ、対照飲料摂取での最大呼気水素濃度上昇量の平均値は42.9±13.7ppmであった。一方、試験飲料摂取後の最大呼気水素濃度上昇量の平均値は34.7±17.6ppmとなり、対照飲料摂取に比較して減少傾向(wilcoxon検定、p=0.051)であった(表2)。   Moreover, when the maximum amount of increase in exhaled hydrogen concentration was determined, the average value of the maximum amount of exhaled hydrogen concentration when the control beverage was ingested was 42.9 ± 13.7 ppm. On the other hand, the average increase in the maximum breath hydrogen concentration after ingestion of the test beverage was 34.7 ± 17.6 ppm, which was a decreasing tendency (wilcoxon test, p = 0.051) compared to the intake of the control beverage (Table). 2).



Figure 0004653785
Figure 0004653785

実施例11 乳飲料摂取時にみられる腹部不快症状の本発明による影響2
プロピオニバクテリウム・フロイデンライヒ(Propionibacterium freudenreichii)IFO 12424株を実施例9と同様の方法で培養し得られた培養物5Kgをさらにエバポレーターで5倍濃縮したところ、1Kg中DHNAを45mg含む組成物が得られた。得られた組成物35.5gに生乳10kg、アスコルビン酸ナトリウム15gを用いて調製した乳飲料で実施例10と同様の実験を行ったところ、本発明組成物を含有する乳飲料の摂取により、実施例10とほぼ同様の結果が得られ、乳飲料摂取時にみられる腹部不快症状が改善されることが確認された。
Example 11 Influence 2 of the Present Invention on Abdominal Discomfort Symptoms Seen When Ingesting Milk Beverages 2
When 5 kg of the culture obtained by culturing Propionibacterium freudenreichii strain IFO 12424 in the same manner as in Example 9 was further concentrated 5-fold with an evaporator, a composition containing 45 mg of DHNA in 1 kg was obtained. Obtained. An experiment similar to that of Example 10 was performed on a milk beverage prepared using 3 kg of the obtained composition and 10 kg of raw milk and 15 g of sodium ascorbate. The experiment was conducted by ingesting a milk beverage containing the composition of the present invention. The result was almost the same as that of Example 10, and it was confirmed that the abdominal discomfort symptom observed at the time of ingestion of milk drink was improved.

実施例12 DHNAの骨芽細胞石灰化能促進効果
骨折手術時に得られた20歳男性の長管骨骨膜より樹立した培養ヒト骨芽細胞(SaM−1)を使用した。このSaM-1細胞は骨芽細胞の特徴をすべて保持していた(Koshihara, Y. et al.: In Vitro Cell. Dev. Biol., 25: 37-43, 1989)。SaM-1は、2mMのα−グリセロリン酸存在下で、1α,25(OH)23の濃度に依存して石灰化を促進することが知られている(Koshihara, Y. et al.: Biochem. Biophys. Res. commun., 145: 651-657,1987)。
18PDL(population doubling level)のSaM-1を12穴プレートに播き、コンフルエントになるまで培養した。つぎに石灰化促進剤である、α−グリセロリン酸を2mMになるように添加した。この培養系に、10-7M〜10-5MのDHNAを添加し32日間培養した。対照には溶媒のDMSOを培養液の0.1%になるように加えた。培地はそれぞれの試験物質を含む培地で1日おきに交換した。石灰化度はヒドロキシアパタイトの構成成分であるCa量で表した。
Example 12 Promoting effect of DHNA on osteoblast calcification ability Cultured human osteoblasts (SaM-1) established from the long periosteum of a 20-year-old male obtained at the time of fracture surgery were used. The SaM-1 cells retained all the characteristics of osteoblasts (Koshihara, Y. et al .: In Vitro Cell. Dev. Biol., 25: 37-43, 1989). SaM-1 is known to promote mineralization in the presence of 2 mM α-glycerophosphate depending on the concentration of 1α, 25 (OH) 2 D 3 (Koshihara, Y. et al .: Biochem. Biophys. Res. Commun., 145: 651-657, 1987).
18 PDL (population doubling level) SaM-1 was seeded in a 12-well plate and cultured until confluent. Next, (alpha) -glycerophosphoric acid which is a calcification promoter is added so that it might become 2 mM. To this culture system, 10 −7 M to 10 −5 M DHNA was added and cultured for 32 days. As a control, DMSO as a solvent was added to 0.1% of the culture solution. The medium was changed every other day with a medium containing each test substance. The degree of calcification was represented by the amount of Ca which is a constituent component of hydroxyapatite.

細胞外マトリックス中のCaは、o-cresolphthalein complexone 法(OCPC法)(Gitleman, H. J.: Anal. Biochem., 18: 520-531,1967)に基づいたキット(カルシウムCテストワコー)により定量した。
培養終了後Hank's液にて細胞を洗浄した。冷5%過塩素酸 0.5mL/ウエル を加えて、4℃で15分間振盪抽出した。抽出液25μLと緩衝液2.5mLを混合後、発色液(OCPC0.4mg/mL、8−キノリノール含有)250μLを加えて攪拌し、5分後にその反応液を吸光度計(570nm)にて測定した(図4)。図4から、DHNAは、濃度に依存して石灰化を促進することが確認された。
Ca in the extracellular matrix was quantified by a kit (Calcium C Test Wako) based on the o-cresolphthalein complexone method (OCPC method) (Gitleman, HJ: Anal. Biochem., 18: 520-531, 1967).
After completion of the culture, the cells were washed with Hank's solution. Cold 5% perchloric acid 0.5 mL / well was added, and the mixture was extracted by shaking at 4 ° C. for 15 minutes. After mixing 25 μL of the extract and 2.5 mL of buffer solution, 250 μL of color developing solution (OCPC 0.4 mg / mL, containing 8-quinolinol) was added and stirred, and after 5 minutes, the reaction solution was measured with an absorptiometer (570 nm). (FIG. 4). From FIG. 4, it was confirmed that DHNA promotes calcification depending on the concentration.

実施例13 FK−506誘発骨粗鬆症モデル動物に対するDHNAの効果
免疫抑制剤として知られるFK−506を動物に投与する事により骨粗鬆症様の病態を引き起こすことが知られている(J. Hard Tissue Biology, 103-107, 10(2), 2001)が、これは、骨芽細胞上に発現されるRANKL(破骨細胞分化因子)の発現亢進により破骨細胞形成が進み、骨吸収優位となって骨粗鬆症病態を呈することが示唆されている。8週齢のICR雄性マウスにFK−506を1mg/kgで10週間連続腹腔内投与した。この間、餌(CRF-1、オリエンタル酵母社製)は自由摂取とし、DHNAを毎日75μg/kgを1%DMSO(ジメチルスルホキシド)水溶液に懸濁させて経口投与した。その結果、DHNA投与群は、コントロール群(FK506(+))に比べて有意に骨密度が高く、FK506投与による骨密度の低下が抑制されていることが明らかとなった(図5)。
Example 13 Effect of DHNA on FK-506 Induced Osteoporosis Model Animal It is known that administration of FK-506, which is known as an immunosuppressive agent, causes osteoporosis-like pathological conditions (J. Hard Tissue Biology, 103 -107, 10 (2), 2001). This is because osteoclast formation advances due to increased expression of RANKL (osteoclast differentiation factor) expressed on osteoblasts, and bone resorption predominates and osteoporosis pathology It is suggested to exhibit. FK-506 was intraperitoneally administered for 10 weeks at 8 mg to ICR male mice at 1 mg / kg. During this time, bait (CRF-1, manufactured by Oriental Yeast Co., Ltd.) was freely consumed, and 75 μg / kg of DHNA was suspended daily in 1% DMSO (dimethyl sulfoxide) aqueous solution and orally administered. As a result, it was revealed that the DHNA administration group had significantly higher bone density than the control group (FK506 (+)), and the decrease in bone density due to FK506 administration was suppressed (FIG. 5).

DHNAを高濃度に含有する本発明組成物を配合した乳飲料摂取から6時間後までに感じた腹部の膨満感の強さを示すグラフである。It is a graph which shows the intensity | strength of the fullness of the abdominal part felt until 6 hours after ingesting the milk drink which mix | blended this invention composition containing DHNA in high concentration. DHNAを高濃度に含有する本発明組成物を配合した乳飲料摂取から6時間後までに腹部の膨満感を訴えた回数を示すグラフである。It is a graph which shows the frequency | count which complained of the feeling of fullness of the abdomen by 6 hours after the milk drink ingestion which mix | blended this invention composition containing DHNA in high concentration. DHNAを高濃度に含有する本発明組成物を配合した乳飲料摂取から6時間後までに感じた鼓腸(ゴロゴロ感)を訴えた回数を示すグラフである。It is a graph which shows the frequency | count which complained of flatulence (feeling of roaring) felt 6 hours after ingesting the milk drink which mix | blended this invention composition containing DHNA in high concentration. DHNAの骨芽細胞石灰化能促進効果を示すグラフである。It is a graph which shows the osteoblast calcification ability promotion effect of DHNA. DHNAの骨密度低下抑制効果を示すグラフである。It is a graph which shows the bone density fall inhibitory effect of DHNA.

Claims (2)

1,4−ジヒドロキシ−2−ナフトエ酸又はその塩を有効成分として含有する代謝性骨疾患予防治療剤。   A preventive and / or therapeutic agent for metabolic bone disease containing 1,4-dihydroxy-2-naphthoic acid or a salt thereof as an active ingredient. 1,4−ジヒドロキシ−2−ナフトエ酸又はその塩が、1,4−ジヒドロキシ−2−ナフトエ酸を産生する微生物を培養し、培養物中に1,4−ジヒドロキシ−2−ナフトエ酸を産生させ、これを採取することにより得られたものである請求項1記載の代謝性骨疾患予防剤。   A microorganism in which 1,4-dihydroxy-2-naphthoic acid or a salt thereof produces 1,4-dihydroxy-2-naphthoic acid is cultured, and 1,4-dihydroxy-2-naphthoic acid is produced in the culture. The preventive agent for metabolic bone disease according to claim 1, which is obtained by collecting this.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0898677A (en) * 1994-04-26 1996-04-16 Meiji Milk Prod Co Ltd Composition for promoting proliferation of bifidobacterium
JP2000256201A (en) * 1999-03-02 2000-09-19 Meiji Milk Prod Co Ltd Agent for improving utilizability of oligosaccharide by bifidobacteria
WO2001028547A1 (en) * 1999-10-19 2001-04-26 Meiji Milk Products Co., Ltd Food materials useful in preventing and ameliorating metabolic bone diseases and preventives/remedies for metabolic bone diseases comprising these materials

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0898677A (en) * 1994-04-26 1996-04-16 Meiji Milk Prod Co Ltd Composition for promoting proliferation of bifidobacterium
JP2000256201A (en) * 1999-03-02 2000-09-19 Meiji Milk Prod Co Ltd Agent for improving utilizability of oligosaccharide by bifidobacteria
WO2001028547A1 (en) * 1999-10-19 2001-04-26 Meiji Milk Products Co., Ltd Food materials useful in preventing and ameliorating metabolic bone diseases and preventives/remedies for metabolic bone diseases comprising these materials

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