JP7250291B2 - nutritional craving suppressant - Google Patents
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Description
本発明は、栄養補給欲抑制剤に関する。 TECHNICAL FIELD The present invention relates to an agent for suppressing desire for nutritional supplementation.
小麦には澱粉及びグルテン等が含まれており、澱粉及びグルテンをそれぞれ分離回収して利用することができる。 Wheat contains starch, gluten, and the like, and the starch and gluten can be separated and recovered for use.
例えば、特許文献1には、小麦グルテン又は小麦グルテン加水分解物を含む摂食抑制剤が記載されている。
For example,
しかしながら、特許文献1の他に、グルテンの更なる用途開発が望まれている。
However, in addition to
本発明は、小麦から分離回収したグルテンの新規用途を開発することを目的とする。 An object of the present invention is to develop new uses for gluten separated and recovered from wheat.
本発明者らは、上述の課題を解決すべく鋭意検討を重ねた結果、小麦から分離回収したグルテンを中性プロテアーゼによって加水分解して得られたペプチドが食欲等の栄養補給欲の抑制作用を有することを見出して、本発明を完成するに至った。 The present inventors have made intensive studies to solve the above-mentioned problems, and found that peptides obtained by hydrolyzing gluten separated and recovered from wheat with a neutral protease have the effect of suppressing the desire for nutritional supplementation such as appetite. The inventors have found that the present invention has been completed.
上記の課題を解決するために、本発明は、以下に示す態様を含む。
<1>中性プロテアーゼによる小麦グルテン加水分解物由来のペプチドを有効成分として含有する栄養補給欲抑制剤。
<2>前記ペプチドが小麦グルテン加水分解物の水溶性成分である、<1>に記載の栄養補給欲抑制剤。
<3>前記ペプチドが小麦グルテン加水分解物の水溶性成分のうちの低親水性画分由来のペプチドである、<1>の栄養補給欲抑制剤。
<4>前記栄養補給欲抑制剤が食欲抑制剤である、<1>~<3>のいずれか1つの栄養補給欲抑制剤。
<5>経口投与用である、<1>~<4>のいずれか1つの栄養補給欲抑制剤。
In order to solve the above problems, the present invention includes the following aspects.
<1> A nutritional supplement desire suppressant containing, as an active ingredient, a peptide derived from wheat gluten hydrolyzate by a neutral protease.
<2> The nutritional supplement desire suppressant according to <1>, wherein the peptide is a water-soluble component of wheat gluten hydrolyzate.
<3> The nutritional supplement craving suppressant of <1>, wherein the peptide is a peptide derived from a low hydrophilic fraction among the water-soluble components of wheat gluten hydrolyzate.
<4> The agent for suppressing desire for nutritional supplementation according to any one of <1> to <3>, wherein the agent for suppressing desire for nutritional supplementation is an appetite suppressant.
<5> The nutritional supplement craving suppressant according to any one of <1> to <4>, which is for oral administration.
本発明の一態様によれば、小麦から分離回収したグルテンの新規用途を提供できる。 According to one aspect of the present invention, a novel use of gluten separated and recovered from wheat can be provided.
〔栄養補給欲抑制剤〕
本発明の栄養補給欲抑制剤は、小麦グルテン加水分解物由来のペプチドを有効成分として含有する。小麦グルテン加水分解物由来のペプチドは以下、「グルテン分解ペプチド」と略記する場合がある。栄養補給欲の例として、食欲等が挙げられる。
[Nutrient supplement desire suppressant]
The appetite suppressant for nutritional supplementation of the present invention contains a peptide derived from wheat gluten hydrolyzate as an active ingredient. Peptides derived from wheat gluten hydrolysates are hereinafter sometimes abbreviated as "gluten-degrading peptides". Appetite etc. are mentioned as an example of a desire for nutritional supplementation.
(グルテン分解ペプチド)
グルテンは、小麦に含まれるタンパク質であり、グルテニンとグリアジンが会合している。
(gluten-degrading peptide)
Gluten is a protein found in wheat and is composed of glutenin and gliadin associated with each other.
図1には、小麦グルテンのグリアジンのアミノ酸配列の一例を示す。また、小麦グルテンのグリアジン及びグルテニンの一例に含まれるグルタミン(Q)の割合を示す。小麦グルテンのグリアジン及びグルテニンを構成するアミノ酸組成の約30~40%がグルタミン(Q)である。 FIG. 1 shows an example of the amino acid sequence of gliadin in wheat gluten. Moreover, the ratio of glutamine (Q) contained in an example of gliadin and glutenin in wheat gluten is shown. Glutamine (Q) accounts for about 30-40% of the amino acid composition that makes up gliadin and glutenin in wheat gluten.
栄養補給欲抑制剤に含まれるグルテン分解ペプチドは、1種類であってもよいし、2種類以上のグルテン分解ペプチドの混合物であってもよい。 The gluten-degrading peptide contained in the nutritional supplement craving suppressant may be of one type, or may be a mixture of two or more types of gluten-degrading peptide.
栄養補給欲の抑制作用を増強させる点等で、グルテン分解ペプチドはグルタミンリッチなペプチドであることが好ましい。本明細書において、グルタミンリッチなペプチドとは、当該ペプチドを構成するアミノ酸残基の総数に対する、グルタミン残基の割合が10%以上100%の範囲内であり、好ましくは30%以上100%以下であるペプチドのことである。 The gluten-degrading peptide is preferably a glutamine-rich peptide in terms of enhancing the effect of suppressing the appetite for nutritional supplementation. As used herein, a glutamine-rich peptide means that the ratio of glutamine residues to the total number of amino acid residues constituting the peptide is in the range of 10% or more and 100%, preferably 30% or more and 100% or less. A certain peptide.
グルテン分解ペプチドの分子量は、例えば、300Da以上15KDa以下であってもよく、300Da以上10kDa以下であることが好ましい。 The molecular weight of the gluten-degrading peptide may be, for example, 300 Da or more and 15 kDa or less, preferably 300 Da or more and 10 kDa or less.
グルテン分解ペプチドを得るために、市販のグルテンを加水分解酵素(プロテアーゼ)で加水分解させる。又は、小麦から澱粉を回収することによって得られたグルテンを加水分解させてもよい。本発明の栄養補給欲抑制剤の有効成分であるグルテン分解ペプチドは中性プロテアーゼによって加水分解させる。グルテン分解ペプチドを得るための工程の一例を図2に示す。 To obtain gluten-degrading peptides, commercially available gluten is hydrolyzed with a hydrolase (protease). Alternatively, gluten obtained by recovering starch from wheat may be hydrolyzed. The gluten-degrading peptide, which is the active ingredient of the nutritional supplement craving suppressant of the present invention, is hydrolyzed by a neutral protease. An example of the process for obtaining gluten-degrading peptides is shown in FIG.
中性プロテアーゼの例として、微生物由来プロテアーゼ、植物由来プロテアーゼ及び哺乳類由来プロテアーゼ等が挙げられる。加水分解条件(例えば、pH、反応時間及び反応温度、等)は、使用する中性プロテアーゼの種類、基質濃度及び酵素濃度等によって適宜選択することができる。 Examples of neutral proteases include microorganism-derived proteases, plant-derived proteases, mammal-derived proteases, and the like. Hydrolysis conditions (eg, pH, reaction time, reaction temperature, etc.) can be appropriately selected depending on the type of neutral protease used, substrate concentration, enzyme concentration, and the like.
ドウ形成による加水分解抑制が引き起こされないように、中性付近(pH7.0前後)の水に少量のグルテンと中性プロテアーゼをまず投入することが好ましい。そして、残りのグルテンを徐々に投入して、加水分解処理を行うことが好ましい。 It is preferred to first introduce a small amount of gluten and neutral protease into near-neutral (around pH 7.0) water so as not to cause hydrolysis inhibition by dough formation. Then, it is preferable to gradually add the remaining gluten and carry out the hydrolysis treatment.
一例では、中性プロテアーゼは、グルテンの総重量に対して0.1重量%以上で5重量%以下の範囲内で用いる。用いられる中性プロテアーゼの量は、グルテンの総重量に対して、好ましくは0.2重量%以上、より好ましくは0.3重量%以上であり、その上限は、好ましくは2重量%以下、より好ましくは1重量%以下又は0.7重量%以下である。中性の水に投入される少量のグルテンの量は特に限定はされないが、一例では、グルテンの総重量の1%以上で10%以下の範囲内である。少量のグルテンの量は、グルテンの総重量の2%以上であることが好ましい場合があり、3%以上であることがより好ましい場合があり、その上限は7%以下であることが好ましい場合があり、5%以下であることがより好ましい場合がある。 In one example, the neutral protease is used within the range of 0.1 wt% or more and 5 wt% or less based on the total weight of gluten. The amount of neutral protease used is preferably 0.2% by weight or more, more preferably 0.3% by weight or more, relative to the total weight of gluten, and the upper limit is preferably 2% by weight or less, more It is preferably 1% by weight or less or 0.7% by weight or less. The amount of the small amount of gluten added to neutral water is not particularly limited, but in one example, it is in the range of 1% or more and 10% or less of the total weight of gluten. The amount of minor gluten may preferably be 2% or more of the total weight of gluten, more preferably 3% or more, with an upper limit of 7% or less. and 5% or less is more preferable in some cases.
グルテンを加水分解して得られたグルテン分解ペプチドは、好ましくは水溶性成分からなるものである。水溶性成分からなるグルテン分解ペプチドは、例えば、グルテンを加水分解した後に、水不溶性成分をろ過等で取り除くことによって得られる。グルテン分解ペプチドは、十分な栄養補給欲抑制作用を発揮させる点等で、活性炭等によって精製しないことが好ましい。逆相クロマトグラフィー及びイオン交換クロマトグラフィー等のクロマトグラフィーを用いて精製する場合、溶離液はメタノール及びエタノール等の低級アルコールと水との混合溶液を用いればよい。低級アルコールとしては、エタノールが好ましい。また、栄養補給欲抑制作用を増強させる点等で、グルテン分解ペプチドは、グルテン加水分解物の水溶性成分のうち低親水性画分由来のペプチド(低親水性を有するペプチド)を含むことが好ましい。本明細書において、「低親水性画分」とは、グルテン加水分解物の水溶性成分を、Sep-Pak C18カートリッジ(Waters社製)に供したときに、10質量%超のメタノールを含有するメタノールと水との混合溶液で溶出する画分を指す。 Gluten-degrading peptides obtained by hydrolyzing gluten preferably consist of water-soluble components. Gluten-degrading peptides composed of water-soluble components can be obtained, for example, by hydrolyzing gluten and then removing water-insoluble components by filtration or the like. It is preferable not to purify the gluten-degrading peptide with activated charcoal or the like in order to exhibit a sufficient effect of suppressing the appetite for nutritional supplementation. When purification is performed using chromatography such as reversed-phase chromatography and ion-exchange chromatography, a mixed solution of water and a lower alcohol such as methanol and ethanol may be used as the eluent. Ethanol is preferred as the lower alcohol. In addition, from the viewpoint of enhancing the effect of suppressing the appetite for nutritional supplementation, etc., the gluten-degrading peptide preferably contains a peptide derived from a low hydrophilic fraction (a peptide having low hydrophilicity) among the water-soluble components of the gluten hydrolyzate. . As used herein, the term "low hydrophilic fraction" refers to the water-soluble component of the gluten hydrolyzate containing more than 10% by mass of methanol when subjected to a Sep-Pak C18 cartridge (manufactured by Waters). It refers to the fraction eluted with a mixed solution of methanol and water.
本発明の栄養補給欲抑制剤におけるグルテン分解ペプチドの含有量は、後述する栄養補給欲抑制剤の形態により異なるが、乾燥質量を基準として、1~100質量%であってもよく、2~99質量%であってもよく、5~95質量%であってもよく、10~90質量%であってもよい。 The content of the gluten-degrading peptide in the agent for suppressing the desire for nutritional supplementation of the present invention varies depending on the form of the agent for suppressing the desire for nutritional supplementation, which will be described later. % by mass, 5 to 95% by mass, or 10 to 90% by mass.
本発明の栄養補給欲抑制剤は、穀物である小麦を原料としているので、安全性が高い。また、実施例に示すように、グルテンを加水分解することによってアレルギー源であるグリアジンが消失しているので、アレルギーの観点からも安全である。 The appetite suppressant for nutritional supplementation of the present invention is highly safe because it uses wheat, which is a cereal grain, as a raw material. In addition, as shown in Examples, hydrolysis of gluten eliminates gliadin, which is a source of allergens, and therefore is safe from the viewpoint of allergy.
(栄養補給欲抑制剤のその他の成分及び剤形)
本発明の栄養補給欲抑制剤は、グルテン分解ペプチド以外の他の成分をさらに含んでいてもよい。当該他の成分は特に限定されないが、例えば、薬学的に許容される担体、潤滑剤、保存剤、安定剤、湿潤剤、乳化剤、浸透圧調整用の塩類、緩衝剤、着色剤、香味料、甘味料、抗酸化剤、及び粘度調整剤等が挙げられる。また、必要に応じて、公知の栄養補給欲抑制剤を、本発明の栄養補給欲抑制剤の一構成として加えて複合剤を構成してもよい。
(Other ingredients and dosage forms of nutritional supplement craving suppressant)
The appetite suppressant for nutritional supplementation of the present invention may further contain components other than the gluten-degrading peptide. The other ingredients are not particularly limited, but include, for example, pharmaceutically acceptable carriers, lubricants, preservatives, stabilizers, wetting agents, emulsifiers, salts for adjusting osmotic pressure, buffering agents, coloring agents, flavoring agents, sweeteners, antioxidants, viscosity modifiers, and the like. In addition, if necessary, a known agent for suppressing desire for nutritional supplementation may be added as one component of the agent for suppressing desire for nutritional supplementation of the present invention to form a composite agent.
上記薬学的に許容される担体は、特に限定されないが、担体であって、栄養補給欲抑制作用を阻害せず、かつ、投与対象となるヒト又は動物に対して実質的な悪影響を及ぼさないという性質を備えることが好ましい。 The above-mentioned pharmaceutically acceptable carrier is not particularly limited, but is a carrier that does not inhibit the effect of suppressing nutritional desire and does not exert a substantial adverse effect on the human or animal to be administered. It is preferable to have properties.
上記担体としては、この分野で既報のものを広く使用でき、具体的には、例えば、水、各種塩溶液、アルコール、植物油、ポリエチレングリコール、ゼラチン、ラクトース、アミロース、ステアリン酸マグネシウム、タルク、ケイ酸、パラフィン、脂肪酸モノグリセリド、脂肪酸ジグリセリド、ヒドロキシメチルセルロース、及びポリビニルピロリドン等が挙げられるが、特にこれらに限定されない。担体の種類は、栄養補給欲抑制剤の剤形、及び投与方法等に応じて、適宜選択すればよい。 As the carrier, those already reported in this field can be widely used, and specific examples include water, various salt solutions, alcohol, vegetable oil, polyethylene glycol, gelatin, lactose, amylose, magnesium stearate, talc, and silicic acid. , paraffin, fatty acid monoglycerides, fatty acid diglycerides, hydroxymethylcellulose, polyvinylpyrrolidone, and the like, but are not particularly limited thereto. The type of carrier may be appropriately selected according to the dosage form of the nutritional supplementation suppressant, administration method, and the like.
栄養補給欲抑制剤の剤形も特に限定されず、例えば、錠剤、丸剤、散剤、シロップ剤、ドライシロップ剤、液剤、懸濁剤、乳剤、顆粒剤及びカプセル剤等の経口剤;坐剤等の経腸製剤;点滴剤;注射剤;等が挙げられ、好ましくは注射剤又は経口投与用の剤形である。例えば、携帯性及び投与の容易さ等の観点では、錠剤及び液剤等の経口投与の剤形が好ましい。 The dosage form of the nutritional supplementation suppressant is also not particularly limited, for example, oral preparations such as tablets, pills, powders, syrups, dry syrups, liquids, suspensions, emulsions, granules and capsules; suppositories, etc. infusions; injections; and the like, preferably dosage forms for injections or oral administration. For example, oral dosage forms such as tablets and liquids are preferred from the viewpoint of portability and ease of administration.
本発明の栄養補給欲抑制剤は、特定保健用食品及び栄養機能食品等の保健機能食品;栄養補助食品及び健康補助食品等のサプリメント;飼料;ペットフード;等の食品としても使用することができる。 The nutritional supplement desire suppressant of the present invention can also be used as foods such as foods with health claims such as foods for specified health uses and foods with nutrient function claims; supplements such as dietary supplements and health supplements; feeds; pet foods; .
(投与対象)
投与対象は、ヒト又は動物であり、より具体的には、ヒトを含む哺乳類からなる群より選択される何れかである。中でも、哺乳類に対して特に好適に本発明の栄養補給欲抑制剤が適用される投与対象となる哺乳類の種類は特に限定されないが、マウス、ラット、ウサギ、モルモット及びヒトを除く霊長類等の実験動物;イヌ及びネコ等の愛玩動物(ペット);ブタ、ウシ、ヤギ、ヒツジ及びウマ等の家畜;ヒト;が挙げられ、好ましくは家畜又はヒトであり、特に好ましくはヒトである。
(Administration target)
The administration subject is either a human or an animal, more specifically, any one selected from the group consisting of mammals including humans. Among them, mammals to which the nutritional supplement craving suppressant of the present invention is particularly preferably applied are not particularly limited, but experiments on mice, rats, rabbits, guinea pigs and primates other than humans, etc. animals; companion animals (pets) such as dogs and cats; domestic animals such as pigs, cows, goats, sheep and horses; humans; preferably domestic animals or humans, particularly preferably humans.
(栄養補給欲抑制剤の投与方法・用量)
本発明の栄養補給欲抑制剤の投与方法は特に限定されず、経口投与、静脈内又は動脈内への血管内投与、腸内投与といった手法によって全身投与されてもよく、経皮投与、舌下投与といった手法によって局所投与されてもよい。好ましい一つの投与態様では、投与の容易さ等の観点で優れるため、経口投与される。
(Administration method and dose of nutritional supplement desire suppressant)
The administration method of the nutritional supplement desire suppressant of the present invention is not particularly limited, and may be systemically administered by methods such as oral administration, intravenous or intravascular administration into an artery, or enteral administration, transdermal administration, or sublingual administration. It may also be administered locally by means of administration. One preferred mode of administration is oral administration, since it is superior in terms of ease of administration and the like.
上記栄養補給欲抑制剤の投与量は、投与対象となる上記ヒト又は動物の年齢、性別、体重、症状、投与経路、投与回数、及び投与期間等に応じて適宜設定すればよい。また、必要であれば、栄養補給欲抑制剤を用いたインビボアッセイを事前に行い、過度の実験を要することなく上記投与量を決定することができる。 The dose of the nutritional supplementation desire suppressant may be appropriately set according to the age, sex, body weight, symptoms, administration route, administration frequency, administration period, etc. of the above-mentioned human or animal to be administered. Also, if desired, prior in vivo assays with the supplementation suppressant can be performed to determine the above dosages without undue experimentation.
本発明の栄養補給欲抑制剤は栄養補給前に投与されてもよいし、栄養補給中に投与されてもよい。 The agent for suppressing appetite for nutritional supplementation of the present invention may be administered before nutritional supplementation or during nutritional supplementation.
本発明の栄養補給欲抑制剤を摂取することによって、栄養(栄養成分)を補給したいという欲求を抑制させることができる。当該栄養として、単糖類、二糖類、多糖類等の炭水化物(糖質);アミノ酸;タンパク質;脂肪酸;脂質;水分;ミネラル;ビタミン;食物繊維;等が挙げられる。本発明の栄養補給欲抑制剤の摂取によって、1種類又は2種類以上の栄養の補給欲を抑制させることができる。実施例に示すように、本発明の栄養補給欲抑制剤は糖とタンパク質と脂質との組み合わせの補給欲の抑制に効果を奏する。 By ingesting the agent for suppressing desire for nutritional supplementation of the present invention, it is possible to suppress the desire to supplement nutrients (nutrient components). The nutrients include carbohydrates (sugars) such as monosaccharides, disaccharides and polysaccharides; amino acids; proteins; fatty acids; lipids; By ingesting the agent for suppressing desire for nutritional supplementation of the present invention, the desire for nutritional supplementation of one or more types of nutrients can be suppressed. As shown in the examples, the agent for suppressing the desire for nutritional supplementation of the present invention is effective in suppressing the desire to supplement the combination of sugar, protein and lipid.
本発明の栄養補給欲抑制剤は、食欲抑制剤としても機能する。食欲抑制剤として使用する場合は食前に投与されてもよい、食間に投与されてもよい。 The nutritional craving suppressant of the present invention also functions as an appetite suppressant. When used as an appetite suppressant, it may be administered before or between meals.
以下に実施例を示し、本発明の実施の形態についてさらに詳しく説明する。もちろん、本発明の以下の実施例に限定されるものではなく、細部については様々な態様が可能であることはいうまでもない。さらに、本発明は上述した実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、それぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。また、本明細書中に記載された文献の全てが参考として援用される。 EXAMPLES The embodiments of the present invention will be described in more detail below with reference to examples. Of course, the present invention is not limited to the following examples, and it goes without saying that various aspects are possible for the details. Furthermore, the present invention is not limited to the above-described embodiments, and can be modified in various ways within the scope of the claims. It is included in the technical scope of the invention. In addition, all documents described in this specification are incorporated by reference.
以下の実施例中、特に記載がない限り、%は質量%を表す。 In the following examples, unless otherwise specified, % represents % by mass.
〔実施例1〕小麦グルテン加水分解ペプチドの調製
小麦グルテン(長田産業製、商品名:フメリットA2)を基質として、図2に記載の製造工程にしたがって、水溶性成分からなる小麦グルテン分解ペプチド(以下、「WGH-2」と略記する場合がある)を調製した。プロテアーゼとして、B.subtilis由来中性金属プロテアーゼ(HBI製、商品名:オリエンターゼ90N)を使用した。
[Example 1] Preparation of wheat gluten hydrolyzed peptide Using wheat gluten (manufactured by Nagata Sangyo, trade name: Fumerit A2) as a substrate, according to the manufacturing process described in Fig. 2, wheat gluten hydrolyzed peptide (hereinafter referred to as , sometimes abbreviated as “WGH-2”) was prepared. As the protease, B. subtilis-derived neutral metalloprotease (manufactured by HBI, trade name: Orientase 90N) was used.
〔評価例1〕WGH-2の成分分析
WGH-2の成分分析を、一般財団法人日本食品分析センターに依頼して行った。分析結果を図3に示す。図3に示すように、WGH-2に含まれるタンパク質量が77.5%であり、そのうち44%がグルタミン(Q)及びグルタミン酸(E)であった。分析法の性質上、グルタミンとグルタミン酸は区別できない。しかしながら、図1より、親タンパク質である小麦グルテンのアミノ酸組成から、WGH-2の実質大部分がグルタミン(Q)であると考えられる。
[Evaluation Example 1] Component Analysis of WGH-2 The component analysis of WGH-2 was requested to the Japan Food Research Laboratories. The analysis results are shown in FIG. As shown in FIG. 3, WGH-2 contained 77.5% protein, of which 44% was glutamine (Q) and glutamic acid (E). Due to the nature of the analytical method, glutamine and glutamic acid cannot be distinguished. However, from FIG. 1, the amino acid composition of the parent protein, wheat gluten, suggests that the substantial majority of WGH-2 is glutamine (Q).
〔評価例2〕WGH-2のSDS-PAGEによる評価
WGH-2のSDS-PAGEによる評価結果を図4に示す。WGH-2のレーンでは、グルテンが検出されなかったことから、グルテンはSDS-PAGEでは検出できないレベルまでに分解されていることが分かった。
[Evaluation Example 2] Evaluation of WGH-2 by SDS-PAGE The evaluation results of WGH-2 by SDS-PAGE are shown in FIG. No gluten was detected in the WGH-2 lane, indicating that gluten was degraded to a level undetectable by SDS-PAGE.
〔評価例3〕WGH-2のアレルゲン試験
食物アレルゲン件検出キットである、アレルゲンアイ(登録商標)イムノクロマトシングルステップ(登録商標)(プリマハム製)を使用して、WGH-2の小麦(グリアジン)に対するアレルゲン試験を行った。結果を図5に示す。
[Evaluation Example 3] Allergen test of WGH-2 Using a food allergen detection kit, Allergen Eye (registered trademark) Immunochromato Single Step (registered trademark) (manufactured by Primaham), WGH-2 against wheat (gliadin) An allergen test was performed. The results are shown in FIG.
グルテンでは小麦(グリアジン)に対して陽性であった一方、WGH-2は陰性であった(検出限界:2ppm)。評価例3の結果から、WGH-2に対してグルテンフリーである旨の表示が可能であることが分かった。例えば、欧州及び米国等では、グルテン濃度が20ppm以下である場合、グルテンフリーである旨の表示が可能である。 Gluten was positive for wheat (gliadin), whereas WGH-2 was negative (detection limit: 2 ppm). From the results of Evaluation Example 3, it was found that WGH-2 can be labeled as gluten-free. For example, in Europe and the United States, if the gluten concentration is 20 ppm or less, it can be labeled as gluten-free.
〔評価例4〕WGH-3のカラム分画品の食欲調節効果試験
WGH-2の10kDa膜透過画分(低分子画分)を凍結乾燥させて、WGH-3を得た。Sep-Pak Vac 35 cc (10 g) C18 カートリッジ(Waters社製)に、40mg/mLのWGH-3溶液を10mL/カートリッジになるように添加し、0~50%のMeOH水溶液100mLで溶出させた。溶出液を凍結乾燥し、凍結乾燥物をマウスに1g/10mL/kg(体重)の投与用量でゾンデにより胃内投与を行った。ケージに設置した水溶液(2%スクロース水溶液)入りボトルを舐める(リック)回数を電気的に計測して、栄養補給欲の指標とした。
[Evaluation Example 4] Appetite regulation effect test of column fraction of WGH-3 WGH-3 was obtained by freeze-drying the 10 kDa membrane-permeable fraction (low molecular weight fraction) of WGH-2. A 40 mg/mL WGH-3 solution was added to a Sep-
また、凍結乾燥物について以下の条件でHPLC分析を行った。100%の溶離液Aを開始から5分間送液した。そして、開始5分から25分間で50%溶離液A/50%溶離液Bとなるように、溶離液の組成を直線的に変化するように送液した。
<条件>
カラム:TSKgel ODS-80TM(4.6 mm (ID)×15 cm)(東ソー社製)
溶離液A:水(Milli Q water)
溶離液B:MeOH
流速:1.2mL/分
温度:40℃
In addition, the lyophilized product was subjected to HPLC analysis under the following conditions. 100% eluent A was pumped for 5 minutes from the start. Then, the composition of the eluent was fed so that the composition of the eluent was changed linearly so that the eluent A became 50% eluent A/50% eluent B in 5 minutes to 25 minutes.
<Condition>
Column: TSKgel ODS-80TM (4.6 mm (ID) × 15 cm) (manufactured by Tosoh Corporation)
Eluent A: water (Milli Q water)
Eluent B: MeOH
Flow rate: 1.2 mL/min Temperature: 40°C
評価結果を図6に示す。図6中、例えば、「WGH 0-10%」は、0~10%のMeOH溶出画分の結果を示す。図6に示すように、Sep-Pak C18カートリッジによる分画において、0~10%のMeOH溶出画分(高親水性画分)では、リック回数が増えて栄養補給欲促進傾向にあることが分かった。0%~10%のMeOH溶出画分はHPLC分析において0~15分に溶出した。一方、10%超~50%のMeOH溶出画分(低親水性画分)では、リック回数が減って栄養補給欲抑制傾向にあることが分かった。10~50%のMeOH溶出画分はHPLC分析において15~35分に溶出した。 The evaluation results are shown in FIG. In FIG. 6, for example, "WGH 0-10%" indicates the results of 0-10% MeOH elution fractions. As shown in Fig. 6, in the fractionation with the Sep-Pak C18 cartridge, it was found that the 0-10% MeOH elution fraction (highly hydrophilic fraction) increased the number of licks and tended to promote nutritional supplementation. rice field. The 0%-10% MeOH elution fraction eluted from 0-15 minutes in HPLC analysis. On the other hand, in the MeOH elution fraction (low hydrophilic fraction) of more than 10% to 50%, it was found that the number of licks decreased and there was a tendency to suppress the desire for nutritional supplementation. The 10-50% MeOH elution fraction eluted at 15-35 minutes in HPLC analysis.
〔評価例5〕WGH-2のカラム分画品の分析
20mg/mLのWGH-2溶液を、Diaion HP20(SIGMA-ALDRICH社製、bed volume:125 mL)に連続的に供した。そして、溶出液を50mLずつ回収した。回収した溶出液のHPLC分析の結果を図7に示す。HPLCの分析条件は評価例4と同様である。また、WGH-2については評価例4と同様の評価試験を行い、リック回数を計測して、栄養補給欲傾向を評価した。図7に記載した促進傾向および抑制傾向とは、WGH-2について栄養補給欲傾向を評価した結果である。
[Evaluation Example 5] Analysis of column fractions of WGH-2 A 20 mg/mL WGH-2 solution was continuously applied to Diaion HP20 (manufactured by SIGMA-ALDRICH, bed volume: 125 mL). Then, 50 mL of the eluate was collected. The results of HPLC analysis of the recovered eluate are shown in FIG. The HPLC analysis conditions are the same as in Evaluation Example 4. For WGH-2, the same evaluation test as in Evaluation Example 4 was performed, and the number of times of licking was measured to evaluate the nutritional supplementation tendency. The promoting tendency and suppressing tendency described in FIG. 7 are the results of evaluating the nutritional supplementation tendency for WGH-2.
図7に示すように、WGH-2溶液のHPLC分析において、15~35分に溶出された画分(25%超~50%のMeOH溶出画分)において、栄養補給欲抑制傾向にあることが分かった。一方、WGH-2溶液をDiaion HP20に連続的に供して回収した溶出液のHPLC分析では、この栄養補給欲抑制傾向の成分に対応するピークが見られなかった。 As shown in FIG. 7, in the HPLC analysis of the WGH-2 solution, the fraction eluted at 15 to 35 minutes (more than 25% to 50% MeOH elution fraction) showed a tendency to suppress nutritional supplementation. Do you get it. On the other hand, the HPLC analysis of the eluate collected by continuously subjecting the WGH-2 solution to Diaion HP20 did not show any peaks corresponding to this component that tends to suppress the appetite for nutritional supplementation.
〔評価例6〕食欲抑制効果の有無の検討
WGH-2の10kDa膜透過画分(低分子画分)であるWGH-3について、食欲抑制効果について検討した。雄性5週齢C57BL6マウス8匹を用いて、ケージに設置した水溶液(2%スクロース、2%アルブミン及び1%イントラリポス含有水溶液)入りボトルを舐める(リック)回数を電気的に計測して、食欲の指標とした。被験試料(WGH-3又は生理食塩水)は、3g/10mL/kg体重の投与用量でゾンデにより胃内投与を行った。コントロールとして生理食塩水を用いた。投与30分後から40分後までの10分間、リック測定装置(メルクエスト社製)にて経時的に累積リック数を測定した。評価結果を図8に示す。
[Evaluation Example 6] Investigation of Presence or Absence of Appetite Suppressing Effect WGH-3, which is a 10 kDa membrane-permeable fraction (low molecular weight fraction) of WGH-2, was examined for an appetite suppressing effect. Eight male 5-week-old C57BL6 mice were used to electrically measure the number of times they licked a bottle containing an aqueous solution (aqueous solution containing 2% sucrose, 2% albumin and 1% intralipos) placed in a cage. as an indicator of Test samples (WGH-3 or physiological saline) were administered intragastrically via a probe at a dosage of 3 g/10 mL/kg body weight. Physiological saline was used as a control. For 10 minutes from 30 minutes after administration to 40 minutes after administration, the cumulative number of licks was measured over time using a lick measurement device (manufactured by Melquest). The evaluation results are shown in FIG.
図8に示すように、累積リック数を測定した結果、コントロールとして生理食塩水を使用した時に比べて、WGH-3を投与したときに食欲(栄養補給欲)の抑制効果が見られた。一方、2%スクロース、2%アルブミン及び1%イントラポリス含有水溶液に替えて、2%スクロース水溶液で評価を行ったところ、栄養補給欲の促進効果が確認された。 As shown in FIG. 8, as a result of measuring the cumulative number of licks, the effect of suppressing appetite (desire for nutritional supplementation) was observed when WGH-3 was administered compared to when physiological saline was used as a control. On the other hand, when a 2% sucrose aqueous solution was used in place of the 2% sucrose, 2% albumin and 1% intrapolis-containing aqueous solutions, it was confirmed that the 2% sucrose solution promotes the desire for nutritional supplementation.
本発明は、栄養補給欲抑制剤又は食欲抑制剤として利用することができる。 INDUSTRIAL APPLICABILITY The present invention can be used as an appetite suppressant or an appetite suppressant for nutritional supplementation.
Claims (3)
前記中性プロテアーゼ処理物はペプチドを含有し、
前記ペプチドは、小麦グルテン加水分解物の水溶性成分のうち、Sep-Pak C18カートリッジ(Waters社製)に供したときに、10%超~50%のメタノール水溶液により抽出される画分由来のペプチドである、栄養補給欲抑制剤。 Contains a neutral protease-treated wheat gluten as an active ingredient,
The neutral protease-treated product contains a peptide,
The peptide, among the water-soluble components of wheat gluten hydrolyzate, when subjected to Sep-Pak C18 cartridge (manufactured by Waters), peptides derived from fractions extracted by more than 10% to 50% aqueous methanol solution is a nutritional craving suppressant.
3. The nutritional supplement craving suppressant according to claim 1 or 2 , which is for oral administration.
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