JP2004238316A - Antimicrobial agent using essential oil of mold-resistant decayed tree and antimicrobial processed article - Google Patents

Antimicrobial agent using essential oil of mold-resistant decayed tree and antimicrobial processed article Download PDF

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Publication number
JP2004238316A
JP2004238316A JP2003027962A JP2003027962A JP2004238316A JP 2004238316 A JP2004238316 A JP 2004238316A JP 2003027962 A JP2003027962 A JP 2003027962A JP 2003027962 A JP2003027962 A JP 2003027962A JP 2004238316 A JP2004238316 A JP 2004238316A
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Prior art keywords
resistant
antibacterial
tree
essential oil
mold
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Inventor
Junichiro Arai
潤一郎 新井
Kanako Amano
香菜子 天野
Mitsugi Yamashita
貢 山下
Yoshio Okamoto
誉士夫 岡本
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Daikin Industries Ltd
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Daikin Industries Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain an antimicrobial agent which is safe, does not exhibit a strong smell, has no restriction in preparation formulations, generally useful in wide fields such as cosmetics, foods, industrial products, domestic articles and an antimicrobial processed article using the same. <P>SOLUTION: The antimicrobial agent or the antimicrobial processed article is obtained by using an essential oil of mold-resistant decayed trees. A mold-resistant decayed tree of Yakusugi (Japanese cedar growing in Yaku island in Japan) or a mold-resistant decayed tree of white cedar is preferable as the mold-resistant decayed tree. A mold-resistant decayed tree of a stump of the Yakusugi is more preferable. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、安全で強い臭気を示さない耐腐朽木の精油を利用した、抗菌剤および抗菌加工品に関する。
【0002】
【従来の技術】
抗菌剤は、微生物の殺菌、除菌、あるいは消毒などに簡便に使用できるため広く一般に使用されている。抗菌剤は、大別すると無機系抗菌剤と有機系抗菌剤とに分別される。無機系抗菌剤には銀や銅などの金属材料が一般に用いられ、その抗菌作用は即効性であり耐熱性も高いが、金属アレルギーを引き起こす危険性がある。一方、有機系抗菌剤には金属アレルギーを引き起こす危険性はない。有機系抗菌剤は、化学薬品を使った合成系抗菌剤と天然物由来の成分を用いた天然系抗菌剤とに、さらに分別される。エタノール、安息香酸、第4級アンモニウムなどの化学薬品を用いた合成系抗菌剤は、抗菌作用が高く即効性がある一方で、皮膚、粘膜などの人体への毒性のために生体バリアーに損傷をきたし、新たな感染症の可能性を増大させるなどの副作用や、残留毒性が少なくないという課題がある。さらに、近年の消費者の安全性志向により、上記のごとく安全性に課題のある化学系抗菌剤はその使用が差し控えられる傾向にあり、安全性が高いとされる天然系抗菌剤が使用される傾向が強まってきている。このような実情に照らし、ヒノキチオール、アリルイソチオシアネートなどの天然物由来の抗菌剤が市場に出され、使用されている。さらに、さまざまな成分が含まれている精油については、それらの相乗効果も期待されるため、これからますますその需要が高まってゆくものと考えられる。
【0003】
【特許文献1】
特開2001−220304号公報
【特許文献2】
特開平11−209212号公報
【非特許文献1】
Mokuzai Gakkaishi, Vol.30, No.3, p.240−243 (1984)
【非特許文献2】
Mokuzai Gakkaishi, Vol.37, No.4, p.345−351 (1991)
【非特許文献3】
Mokuzai Gakkaishi, Vol.37, No.4, p.352−357 (1991)
【非特許文献4】
Mokuzai Gakkaishi, Vol.40, No.9, p.996−1002 (1994)
【非特許文献5】
Mokuzai Gakkaishi, Vol.42, No.11, p.1121−1126 (1996)
【非特許文献6】
Mokuzai Gakkaishi, Vol.43, No.6, p.521−523 (1997)
【0004】
【発明が解決しようとする課題】
従来の天然系抗菌剤は、安全な抗菌剤として使用される反面、その強い臭気などの問題により製品配合上制約的であり、汎用的ではないという課題が存在した。
【0005】
【課題を解決するための手段】
本発明は、天然材の耐腐朽木から採取した精油を有効成分とする、安全で強い臭気を示さない、製品配合上の制約がなく幅広い分野において汎用的に利用できる抗菌剤、およびそれを利用した抗菌加工品の提供を目的とする。本発明は、切り株のヤクスギ耐腐朽木の精油が黄色ブドウ球菌(Staphylococcus aureus IFO 14462)に対してタイワンヒノキの精油(ヒノキチオールを含有する)と同程度の抗菌作用を示したという発見(図1を参照のこと)に基づく。
【0006】
屋久島では、一般に屋久島産のスギのうち樹齢千年以上のスギのことを「屋久杉」と称し、それ以外のスギを小杉と称するが、本明細書中においては屋久島産のスギを「ヤクスギ」と称する。ヤクスギは、一般のスギと比べて樹齢が長く、樹木の成分含量や組成が異なるなどの特徴がある(Mokuzai Gakkaishi, Vol.37,No.4, p.345−351 (1991)を参照のこと)。その特徴の1つには、ヤクスギには九州本島産のスギには見られない特有のテルペノイド成分、セスキテルペン類(一般に木香の複合的な香気をもたらす)が含まれている点が挙げられる(Mokuzai Gakkaishi, Vol.42, No.11 p.1121−1126 (1996)を参照のこと)。
【0007】
「ヒノキ」は、ヒノキ科の高さ30m、径1m以上に達する常緑大高木を意味する。
【0008】
本明細書中にて用いる「耐腐朽木」は、長期にわたり風雨による劣化、微生物による腐食、または昆虫類による食害等を免れてきた切り株、埋もれ木または倒木を意味する。本明細書中で用いる「埋もれ木」は、土に埋もれた木を意味する。本発明で用いる耐腐朽木は、ヤクスギ耐腐朽木またはヒノキ耐腐朽木(ただし、ヒノキ埋もれ木を除く)が好ましく、ヤクスギ耐腐朽木のうち「切り株のヤクスギ耐腐朽木」がより好ましい。
【0009】
「切り株のヤクスギ耐腐朽木」は、藩政時代に根元から1メートルほど残して伐採され、微生物等による腐朽に耐えてきたヤクスギの切り株を意味する。これらは少なくとも伐採後、約百年乃至二百年の期間が経過している。このような相当の長期間にわたり風雨、微生物等による材の腐朽が進行しなかったことは異例のことである。切り株のヤクスギ耐腐朽木の精油または抽出物の生理活性は、これまでダニまたは不完全菌などに対して調べられてきた(例えば、Mokuzai Gakkaishi, Vol.37, No.4, p.345−351 (1991)、Mokuzai Gakkaishi, Vol.37, No.4, p.352−357 (1991)、Mokuzai Gakkaishi, Vol.40, No.9, p.996−1002 (1994)、およびMokuzai Gakkaishi, Vol.43, No.6, p.521−523 (1997)を参照のこと)。しかしながら、その他の微生物に対してその生理活性を調べたという報告は、これまでなされていない。
【0010】
「精油」は、種々の植物体から主として水蒸気蒸留法または熱水蒸留法によって得られる、特有の芳香をもつ揮発性の油状物の総称である。精油は、当業者であれば当分野で周知の技術を用いて容易に作製することができる。精油は通常、多種の化合物から成り、その主成分はモノテルペン、セスキテルペン、ジテルペンまたはそれらの酸化還元誘導体であるが、少量の高級テルペンまたは非テルペン化合物も含まれる。水蒸気蒸留法とは、植物原料に高温の水蒸気を通じ、水蒸気とともに留出する部分を冷却、濃縮して精油を得る方法であり、セイロ方式とも呼ばれる。また、熱水蒸留法とは、植物原料を水中に入れ煮沸し、水蒸気とともに上方から留出する部分を冷却、濃縮して精油を得る方法である。精油の作成方法としては、油脂吸着抽出法、有機溶剤抽出法、超臨界流体抽出法、乾燥回収法などを用いても良い。
【0011】
「切り株のヤクスギ耐腐朽木の精油」の特徴としては、タイワンヒノキの精油に匹敵する抗菌作用を有すること、およびヤクスギ材(生立木)または本州に生育するサンムスギ材の精油成分中に見られるモノテルペン類(刺激臭物質)がほとんど見られず、セスキテルペン類(木香の複合的な香気をもたらす)が多く含まれていることが挙げられる(Mokuzai Gakkaishi, Vol.37, No.4, p.345−351 (1991)を参照のこと)。本精油の植物原料としては、切り株のヤクスギ耐腐朽木であれば任意の形態であって良い。そのような形態の例としては、ヤクスギ耐腐朽木の加工クズなどの木片が挙げられる。
【0012】
「抗菌剤」とは、微生物(ただし、不完全菌類を除く)を死滅または不活化させるか、あるいはその増殖または発育を抑制する薬剤を意味するものとして用いる。「不完全菌類を除く微生物」には、原生動物、粘菌、真菌(例えば、子ノウ菌類および担子菌類)、細菌、ウイルスなどが挙げられる。抗菌剤は用途によっては強力な殺菌力を有するものが必要とされる場合もあるが、本発明により提供される抗菌剤は、人体に対する副作用がなく、安全で強い臭気を示さないことを特徴とする。
【0013】
「抗菌加工品」とは抗菌加工された製品を意味する。抗菌加工は、抗菌剤を適宜の担体により製品に保持させたり、製品中に混合するなどして抗菌作用を発揮させる加工を意味する。抗菌加工品の例としては、空調システムまたは掃除機などのフィルタに適宜の担体により抗菌剤を保持させたもの、抗菌加工した食品の容器、調理器具、衣料品または包装紙、あるいは抗菌剤を含有した化粧品または医薬部外品などが挙げられるが、これらに制限されない。
【0014】
「空気の清浄化」とは、空中に浮遊している微生物、または壁や床、その他の物に付着している微生物を死滅または不活化させるか、その増殖または発育を抑制して、空気を清潔にすることまたは清潔に保つことを意味する。さらに、空気の清浄化には抗菌効果とあいまって、微生物の増殖、発育、または分解過程で生じる臭気物質の発生を抑えることによってもたらされる消臭効果も含まれる。
【0015】
【発明の実施の形態】
本抗菌剤は、抗菌剤としての効果を十分に発揮させるべく、抗菌剤中に耐腐朽木の精油が1〜50%程度含有されていることが望ましい。本発明では、本発明に係る抗菌剤の有効成分である耐腐朽木の精油を、抗菌剤として単独で用いてもよく、あるいは本発明の効果を損なわない範囲で他の公知の抗菌剤、保存料成分と組み合わせて用いても良い。さらに、抗菌剤の剤型としては、特に限定しないが、溶液状、ペースト状、粉末状、ブロック状など、いずれの剤型にも適宜調製することができる。また、本抗菌剤の有効成分である耐腐朽木の精油は、水性溶媒または有機溶媒に溶解した状態のいずれの場合でも安定して抗菌作用を発揮するため、剤型の選択は限定されない。また、担体に保持させ、その蒸気圧を利用して徐放される剤型にも調製することができる。本抗菌剤は、安全で強い臭気を示さないため、製品配合上の制約がなく幅広い分野において汎用的に利用することができる。したがって、本剤は、その抗菌作用を発揮できるように加工された抗菌加工品の製造にも利用することができる。
【0016】
担体には、固体状、液体状またはゲル状の担体がある。固体状担体としては、ろ紙などの紙、セルロース加工品、木材加工品、ポプリ(乾燥した草木等)、不織布、織布、またはプラスチックフィルム等のシート状やビーズ状、パウダー状物などがある。また、無機、有機多孔性物質、例えばケイソイ土、黄土、粘土、素焼き物、タルク、活性炭、シリカ、シリカゲルなどが挙げられる。液体状担体としては、水、各種アルコール、エステル等の有機溶剤、各種脂質類および香料などが挙げられる。さらに、有効成分をこれらの液体中に溶解あるいは分散させる際には、必要に応じて各種の補助成分を添加溶解させることができる。そのような補助成分としては、界面活性剤、高分子物質、高級脂肪酸、脂肪酸エステル、着色剤、粘度調節剤、酸化防止剤などが挙げられる。ゲル状担体としては、公知の各種のゲル状物質、例えば寒天、ゼラチン、糊、ポリビニルアルコール、デキストリンなどが挙げられる。
【0017】
好ましい抗菌加工品としては、本剤を適宜の担体により保持させてなる抗菌加工品がある。このような抗菌加工品の例としては、適宜の担体またはそれ自体を担体として、本剤を保持させて空中に徐放させるタイプ(徐放型)のフィルタが挙げられる。徐放しないタイプ(固定型)のフィルタは、それが設置された拠点まで空気を誘導してきてはじめて空気洗浄化システムが作用するもので、室内の空間それ自体に抗菌性や消臭性を与えるという機能は持ち合わせていなのに対し、本発明により提供されるフィルタは、後者の機能をも併せ持つフィルタである。そのようなフィルタは、本発明に係る抗菌剤を、例えばロジンエステル、樹脂酸、脂肪酸エステル類などを融解液状化したものに混練して、揮散速度をコントロールした混合溶液を作成し、その溶液を、フィルタ繊維に塗布または含浸させることによって、製造することができる。その他の例としては、衣料繊維または衣料品自体を担体として用いた製品が挙げられる。衣料品は全ての衣料品を意味するが、特に肌着が好ましい。さらに別の例としては、保留剤と混合し揮散速度をコントロールしたゲル状、液状または固体状物を封入した製品が挙げられる。「保留剤」とは、精油成分の速過ぎる揮発を抑制し、それらの成分の揮発の割合を同一に保たせる目的で添加するものを意味する。そのような保留剤の例としては、安息香酸エチル、フタル酸エチルなどが含まれる。
【0018】
別の好ましい抗菌加工品としては、本抗菌剤を食品、医薬品、工業用品または家庭用品などに添加、混入して、本剤の抗菌作用を発揮させるようにした製品、例えばスキンケアやヘアケアのための化粧品などが挙げられる。本抗菌剤の有する臭いは、木香の複合的な快い香気であり化粧品への適用に障害とはならず、それらへの適用に好ましい。
【0019】
本発明に係る抗菌剤は、上記のように添加、混入して、または適宜の担体により保持させてなる抗菌加工品を製造するのに使用することもできるし、塗布、散布または揮散などにより、生活用品や設備などで殺菌、除菌を行なうべき部分および生活空間自体に適用して、抗菌作用を発揮させるように使用することもできる。例えば、本抗菌剤をスプレーなどにより空中に散布するか、またはヒーターなどで温めて揮散させ、空気を清浄化するために使用することが挙げられる。さらに、食品の容器、調理器具またはその他、食品に触れる物品の表面、あるいは日用品または設備(例えば乳児用品や便座など)、殺菌、除菌を行なうべき部分に塗布またはスプレーすることにより適用することも挙げられる。
【0020】
【実施例】
実施例1.精油の製造法
切り株のヤクスギ耐腐朽木を加工した際に得られる加工くずなどの木片を粉砕し、切り株のヤクスギ耐腐朽木の粉砕物を得た。その粉砕物を精油抽出装置の加熱槽に充填し、蒸留水5倍重量を加え、8時間煮沸した。加熱槽から留出した気体を冷却槽で冷却し、精油と留出水とを分離して、本発明に係る抗菌剤の有効成分である精油を得た。
【0021】
実施例2.蒸気状態接触試験
本発明に係る抗菌剤に使用する有効成分である切り株のヤクスギ耐腐朽木の精油、公知の天然系抗菌剤、カユプテ、ユーカリ、青森ヒバ油およびタイワンヒノキの精油の、蒸気状態における抗菌作用を次のように試験した。試験菌には、黄色ブドウ球菌(Staphylococcus aureus IFO14462)を用いた。35℃の平板培養で20〜24時間前培養した試験菌を約10cfu/mlに調整し、その0.1mlをシャーレ中の普通寒天培地に塗沫した。このシャーレを転置し、蓋の内側に設置しておいたろ紙に、各試料をそれぞれ10μl、100μl滴下した。それぞれのシャーレを、35℃で24時間培養した後にコロニー数をカウントし、それぞれの生存率(%)を算出して、抗菌作用を評価した。各試験は独立に3回行ない(n=3)、それぞれの生存率を、各試験の生存率の平均値と標準偏差(S.D)で表した。その結果を以下の表1にまとめる。この試験により、ヤクスギの精油が、タイワンヒノキ精油に匹敵する抗菌力を有することが明らかとなった。
【表1】

Figure 2004238316
(*)タイワンヒノキ(100μl)は、2回の試験(n=2)結果の平均値と標準偏差を示す。
【0022】
【発明の効果】
本発明に係る抗菌剤は、天然材の耐腐朽木から採取した精油を有効成分とする、安全で強い臭気を示さない抗菌剤である。したがって、本剤は製品配合上の制約がなく、化粧品、食品、工業用品、家庭用品などの幅広い分野において汎用的に利用することができる。本発明に係る抗菌加工品は、本剤を利用した抗菌加工品である。
【図面の簡単な説明】
【図1】実施例2に記載の試験例の結果を表したグラフ。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an antibacterial agent and a processed antibacterial product using essential oils of decay-resistant wood that are safe and do not show strong odor.
[0002]
[Prior art]
Antibacterial agents are widely and generally used because they can be easily used for disinfecting, eliminating, or disinfecting microorganisms. Antibacterial agents are roughly classified into inorganic antibacterial agents and organic antibacterial agents. Metal materials such as silver and copper are generally used for inorganic antibacterial agents, and their antibacterial action is immediate and has high heat resistance, but may cause metal allergy. On the other hand, organic antibacterial agents have no risk of causing metal allergy. Organic antibacterial agents are further classified into synthetic antibacterial agents using chemicals and natural antibacterial agents using components derived from natural products. Synthetic antibacterial agents using chemicals such as ethanol, benzoic acid, and quaternary ammonium have high antibacterial activity and are effective immediately, but also damage the biological barrier due to toxicity to the human body such as skin and mucous membranes. However, there is a problem that side effects such as increasing the possibility of a new infectious disease and residual toxicity are not small. Furthermore, due to recent consumer's safety consciousness, the use of chemical antibacterial agents having safety issues as described above tends to be refrained, and natural antibacterial agents which are considered to be highly safe are used. The trend is growing. In view of such circumstances, antibacterial agents derived from natural products such as hinokitiol and allyl isothiocyanate have been put on the market and used. Furthermore, as for essential oils containing various components, a synergistic effect thereof is also expected, and it is considered that the demand for the essential oils will further increase in the future.
[0003]
[Patent Document 1]
JP 2001-220304 A [Patent Document 2]
JP-A-11-209212 [Non-Patent Document 1]
See Mokuzai Gakkaishi, Vol. 30, no. 3, p. 240-243 (1984)
[Non-patent document 2]
See Mokuzai Gakkaishi, Vol. 37, no. 4, p. 345-351 (1991)
[Non-Patent Document 3]
See Mokuzai Gakkaishi, Vol. 37, no. 4, p. 352-357 (1991)
[Non-patent document 4]
See Mokuzai Gakkaishi, Vol. 40, no. 9, p. 996-1002 (1994)
[Non-Patent Document 5]
See Mokuzai Gakkaishi, Vol. 42, no. 11, p. 1121-1126 (1996)
[Non-Patent Document 6]
See Mokuzai Gakkaishi, Vol. 43, No. 6, p. 521-523 (1997)
[0004]
[Problems to be solved by the invention]
Conventional natural antibacterial agents are used as safe antibacterial agents, but on the other hand, there are problems such as strong odor and the like, which restricts product formulation and is not versatile.
[0005]
[Means for Solving the Problems]
The present invention provides an antibacterial agent containing essential oil collected from a rot-resistant tree of natural material as an active ingredient, which is safe, does not show strong odor, has no restrictions on product formulation, and can be generally used in a wide range of fields, and uses the same. The purpose is to provide antibacterial processed products. According to the present invention, the discovery that the essential oil of the stump Yakusugi rot-resistant wood exhibited the same antibacterial activity against Staphylococcus aureus IFO 14462 as the essential oil of Taiwan cypress (containing Hinokitiol) (see FIG. 1). See).
[0006]
In Yakushima, among the cedars from Yakushima, cedars that are 1000 years old or older are generally referred to as `` Yakusugi '', and other cedars are referred to as Kosugi.In this specification, cedars from Yakushima are referred to as `` Yakusugi ''. Name. Yakusugi has characteristics such as a longer tree age than ordinary cedar, and a difference in the component content and composition of the tree (Mokuzai Gakkaishi, Vol. 37, No. 4, p. 345-351 (1991)). ). One of its features is that Yakusugi contains sesquiterpenes, which are unique to Japanese cedar from Kyushu main island, and produce sesquiterpenes (generally having a complex odor of woody incense). (See Mokuzai Gakkaishi, Vol. 42, No. 11 p. 1121-1126 (1996)).
[0007]
"Hinoki" means an evergreen tall tree of the cypress family having a height of 30 m and a diameter of 1 m or more.
[0008]
As used herein, "decay-resistant tree" means a stump, buried tree, or fallen tree that has been protected from deterioration by wind and rain, corrosion by microorganisms, and damage by insects for a long time. As used herein, "buried tree" means a tree buried in soil. The rot-resistant tree used in the present invention is preferably a yak-sugi rot-resistant tree or a cypress rot-resistant tree (however, excluding a cypress buried tree).
[0009]
"Stumped Yakusugi rot-resistant tree" means a stump of Yakusugi that has been cut down to about one meter from its root during the feudal era and has endured decay by microorganisms. These have at least about one hundred to two hundred years since logging. It is unusual that the decay of the material due to weather, microbes and the like did not progress for such a long time. The biological activity of the essential oil or extract of the stumped Yakusugi rot-resistant wood has been examined against ticks or incomplete bacteria (eg, Mokuzai Gakkaishi, Vol. 37, No. 4, p. 345-351). (1991), Mokuzai Gakkaishi, Vol.37, No. 4, p.352-357 (1991), Mokuzai Gakkaishi, Vol.40, No.9, pp.996-1002 (1994), and Mokuzai Gakkaih. 43, No. 6, p. 521-523 (1997)). However, there has been no report that other microorganisms were examined for their biological activity.
[0010]
"Essential oil" is a generic term for volatile oils having a characteristic aroma obtained from various plants mainly by a steam distillation method or a hot water distillation method. Essential oils can be readily prepared by those skilled in the art using techniques well known in the art. Essential oils usually consist of a number of compounds, the main components of which are monoterpenes, sesquiterpenes, diterpenes or their redox derivatives, but also small amounts of higher or non-terpene compounds. The steam distillation method is a method in which high-temperature steam is passed through a plant material to cool and concentrate a portion distilled together with the steam to obtain an essential oil. The hot water distillation method is a method in which a plant raw material is put into water and boiled, and a portion distilled off from above together with water vapor is cooled and concentrated to obtain an essential oil. As a method for producing the essential oil, an oil / fat adsorption extraction method, an organic solvent extraction method, a supercritical fluid extraction method, a dry recovery method, or the like may be used.
[0011]
The characteristics of the essential oil of "stumped yakusugi rot-resistant wood" have antibacterial activity comparable to the essential oil of Taiwan cypress, and the products found in the essential oil component of yaksugi (living tree) or sansugi wood growing in Honshu Terpenes (irritating odor substances) are scarcely observed, and a large amount of sesquiterpenes (providing a complex odor of wood incense) is included (Mokuzai Gakkaishi, Vol. 37, No. 4, p. 345-351 (1991)). The plant raw material of the present essential oil may be in any form as long as it is a stump-bearing Yakusugi rot. An example of such a form is a piece of wood such as a processed scrap of a yak sugi-resistant wood.
[0012]
The term “antibacterial agent” is used to mean an agent that kills or inactivates microorganisms (excluding incomplete fungi) or suppresses their growth or growth. "Microorganisms excluding incomplete fungi" include protozoa, slime molds, fungi (eg, ascomycetes and basidiomycetes), bacteria, viruses, and the like. Antibacterial agents may be required to have strong bactericidal activity depending on the application, but the antibacterial agents provided by the present invention have no side effects on the human body and are characterized by not showing a strong and safe odor. I do.
[0013]
"Antimicrobial product" means a product that has been antimicrobial processed. The antibacterial processing means a processing in which an antibacterial agent is held in a product by an appropriate carrier or mixed in the product to exert an antibacterial action. Examples of antibacterial products include those in which an antibacterial agent is held by a suitable carrier in a filter such as an air conditioning system or a vacuum cleaner, containers of antibacterial processed food, cooking utensils, clothing or wrapping paper, or containing an antibacterial agent Cosmetics or quasi-drugs, but are not limited thereto.
[0014]
"Purifying the air" is to kill or inactivate microorganisms suspended in the air, or microorganisms attached to walls, floors, or other objects, or to suppress the growth or growth of such microorganisms, thereby eliminating air. Meaning to keep clean or clean. In addition, air cleaning, together with the antibacterial effect, also includes the deodorant effect provided by suppressing the generation of odorous substances that occur during the growth, growth, or decomposition of microorganisms.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
The antibacterial agent desirably contains about 1 to 50% of essential oil of decay-resistant wood in the antibacterial agent in order to sufficiently exhibit the effect as the antibacterial agent. In the present invention, the essential oil of decay-resistant wood, which is an active ingredient of the antibacterial agent according to the present invention, may be used alone as an antibacterial agent, or other known antibacterial agents as long as the effects of the present invention are not impaired, and storage. It may be used in combination with ingredients. Further, the dosage form of the antibacterial agent is not particularly limited, and any dosage form such as a solution, a paste, a powder, and a block can be appropriately prepared. In addition, the essential oil of the decay-resistant wood, which is an active ingredient of the present antibacterial agent, exhibits a stable antibacterial action regardless of whether it is dissolved in an aqueous solvent or an organic solvent, and therefore the selection of the dosage form is not limited. It can also be prepared as a dosage form which is held in a carrier and is sustainedly released using its vapor pressure. Since this antibacterial agent is safe and does not show a strong odor, it can be widely used in a wide range of fields without restrictions on product formulation. Therefore, the present agent can be used for the production of an antibacterial processed product processed so as to exhibit its antibacterial action.
[0016]
The carrier includes a solid, liquid or gel carrier. Examples of the solid carrier include papers such as filter paper, processed cellulose products, processed wood products, potpourri (dried plants and the like), nonwoven fabrics, woven fabrics, and sheets, beads, and powders such as plastic films. In addition, inorganic and organic porous materials such as diatomaceous earth, loess, clay, unglazed material, talc, activated carbon, silica, silica gel and the like can be mentioned. Examples of the liquid carrier include water, various organic solvents such as alcohols and esters, various lipids, and fragrances. Further, when dissolving or dispersing the active ingredient in these liquids, various auxiliary ingredients can be added and dissolved as necessary. Examples of such an auxiliary component include a surfactant, a polymer, a higher fatty acid, a fatty acid ester, a colorant, a viscosity modifier, and an antioxidant. Examples of the gel carrier include various known gel substances such as agar, gelatin, glue, polyvinyl alcohol, and dextrin.
[0017]
Preferred antibacterial processed products include antibacterial processed products in which the present agent is held by an appropriate carrier. As an example of such an antibacterial processed product, there is a filter of a type (sustained release type) in which an appropriate carrier or itself is used as a carrier and the agent is sustainedly released in the air. Non-sustained-release (fixed-type) filters work only when air is guided to the base where they are installed, so that the air-cleaning system works, giving the interior space itself antibacterial and deodorant properties. Although the function is not provided, the filter provided by the present invention is a filter having the latter function. Such a filter, the antimicrobial agent according to the present invention, for example, rosin ester, resin acid, kneaded into a melted liquid of fatty acid esters, etc., to create a mixed solution with a controlled volatilization rate, the solution , By applying or impregnating the filter fibers. Other examples include products using clothing fibers or clothing itself as a carrier. Clothing means all clothing, but underwear is particularly preferred. Still another example is a product in which a gel, liquid, or solid substance mixed with a retaining agent to control the volatilization rate is encapsulated. The term "retaining agent" means one added for the purpose of suppressing premature volatilization of essential oil components and keeping the volatilization ratio of those components the same. Examples of such retention agents include ethyl benzoate, ethyl phthalate, and the like.
[0018]
Another preferred antibacterial processed product is a product in which the antibacterial agent is added to and mixed with food, a pharmaceutical, an industrial product or a household product so as to exert the antibacterial action of the present agent, for example, for skin care or hair care. Cosmetics and the like. The odor of the present antibacterial agent is a complex pleasant odor of wood incense, does not hinder application to cosmetics, and is preferable for application to them.
[0019]
The antibacterial agent according to the present invention can be used for producing an antibacterial processed product which is added, mixed, or held by an appropriate carrier as described above, and applied, sprayed or volatilized. The present invention can be applied to a part to be sterilized or disinfected in daily necessities or equipment and a living space itself to be used to exhibit an antibacterial action. For example, the present antibacterial agent may be sprayed in the air by spraying or the like, or may be heated and vaporized with a heater or the like to be used for purifying air. In addition, it can be applied by applying or spraying on the surface of food containers, cooking utensils, or other food-contacting articles, or on daily necessities or equipment (eg, baby products or toilet seats), parts to be sterilized or disinfected. No.
[0020]
【Example】
Embodiment 1 FIG. Method of producing essential oil Wood chips such as processing waste obtained when processing a stump Yakusugi rot-resistant tree were crushed to obtain a crushed stump Yakusugi rot-resistant wood. The pulverized product was filled in a heating tank of an essential oil extraction device, 5 times the weight of distilled water was added, and the mixture was boiled for 8 hours. The gas distilled from the heating tank was cooled in a cooling tank, and essential oil and distillate were separated to obtain essential oil which is an active ingredient of the antibacterial agent according to the present invention.
[0021]
Embodiment 2. FIG. Vapor state contact test The essential oil used for the antibacterial agent according to the present invention, the essential oil of the stump Yakusugi decayed wood, the known natural antibacterial agent, the essential oils of Kajupte, Eucalyptus, Aomori Hiba oil and Taiwan Hinoki, in the vapor state The antimicrobial activity was tested as follows. Staphylococcus aureus IFO14462 was used as a test bacterium. The test bacteria pre-cultured for 20 to 24 hours by plate culture at 35 ° C. were adjusted to about 10 3 cfu / ml, and 0.1 ml thereof was spread on a normal agar medium in a petri dish. The petri dish was transposed, and 10 μl and 100 μl of each sample were dropped on filter paper placed inside the lid. After culturing each petri dish at 35 ° C. for 24 hours, the number of colonies was counted, and the survival rate (%) of each was calculated to evaluate the antibacterial action. Each test was independently performed three times (n = 3), and the respective survival rates were represented by the average value and the standard deviation (SD) of the survival rates of each test. The results are summarized in Table 1 below. This test revealed that the essential oil of Yakusugi has an antibacterial activity comparable to that of Taiwan cypress essential oil.
[Table 1]
Figure 2004238316
(*) Chinese cypress (100 μl) shows the average value and standard deviation of the results of two tests (n = 2).
[0022]
【The invention's effect】
The antibacterial agent according to the present invention is a safe antibacterial agent which does not show strong odor and contains essential oil collected from a decay-resistant tree of a natural material as an active ingredient. Therefore, the present agent has no restriction on the product formulation and can be generally used in a wide range of fields such as cosmetics, foods, industrial supplies, and household goods. The antibacterial processed product according to the present invention is an antibacterial processed product using the present agent.
[Brief description of the drawings]
FIG. 1 is a graph showing the results of a test example described in Example 2.

Claims (6)

耐腐朽木の精油を有効成分とする抗菌剤。An antibacterial agent containing essential oil of decay-resistant wood as an active ingredient. 該耐腐朽木がヤクスギ耐腐朽木またはヒノキ耐腐朽木のいずれかである、請求項1に記載の抗菌剤。The antibacterial agent according to claim 1, wherein the rot-resistant tree is one of a Yakusugi rot-resistant tree and a cypress-resistant rot tree. 切り株のヤクスギ耐腐朽木である、請求項2に記載の抗菌剤。The antibacterial agent according to claim 2, wherein the antibacterial agent is a stump-resistant Yakusugi tree. 空中に散布または揮散させて、空気を清浄化するための請求項1〜3のいずれかに記載の抗菌剤。The antibacterial agent according to any one of claims 1 to 3, which is sprayed or volatilized in the air to purify air. 請求項1〜4のいずれかに記載の抗菌剤を含有する、担体を含む抗菌加工品。An antibacterial product containing a carrier, comprising the antibacterial agent according to claim 1. 空気を清浄化するためのフィルタであって、該フィルタに含まれる抗菌剤が空中に徐放される、請求項5に記載の抗菌加工品。The antibacterial product according to claim 5, which is a filter for purifying air, wherein an antibacterial agent contained in the filter is slowly released into the air.
JP2003027962A 2003-02-05 2003-02-05 Antimicrobial agent using essential oil of mold-resistant decayed tree and antimicrobial processed article Pending JP2004238316A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010150239A (en) * 2008-11-18 2010-07-08 Koken Ltd Antimicrobial composition, and method for producing the same and utilization thereof
JP2010188575A (en) * 2009-02-17 2010-09-02 Hiroe Narita Molded body and method for manufacturing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010150239A (en) * 2008-11-18 2010-07-08 Koken Ltd Antimicrobial composition, and method for producing the same and utilization thereof
US8349346B2 (en) 2008-11-18 2013-01-08 Koken Ltd. Antimicrobial composition, process for preparing the same, and utilization thereof
JP2010188575A (en) * 2009-02-17 2010-09-02 Hiroe Narita Molded body and method for manufacturing the same

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