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JP4800503B2 - Antiallergic composition - Google Patents
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JP4800503B2 - Antiallergic composition - Google Patents

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Publication number
JP4800503B2
JP4800503B2 JP2001143031A JP2001143031A JP4800503B2 JP 4800503 B2 JP4800503 B2 JP 4800503B2 JP 2001143031 A JP2001143031 A JP 2001143031A JP 2001143031 A JP2001143031 A JP 2001143031A JP 4800503 B2 JP4800503 B2 JP 4800503B2
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Prior art keywords
hemicellulose
antiallergic composition
antiallergic
product
food
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JP2001143031A
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JP2002338488A (en
Inventor
政保 竹内
浩一 小川
信之 中村
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Nihon Shokuhin Kako Co Ltd
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Nihon Shokuhin Kako Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、トウモロコシ外皮を原料とする抗アレルギー組成物に関する。
【0002】
【従来の技術】
疫学調査によると、近年、スギ花粉症やアトピー性皮膚炎等のアレルギー性疾患の著しい増加が指摘されており、アレルゲンの増加、大気汚染、食品添加物、食習慣等の生活環境の変化がその原因として考えられている。
【0003】
従来、アトピー性皮膚炎にみられる皮膚反応は、IgE抗体により誘導されるI型アレルギーの代表的な疾患と言われていたが、近年の病理所見、臨床的特徴から、I型アレルギー反応ではなく、むしろIV型アレルギー反応の関与が大きいとも言われている。
【0004】
上記のようなアレルギー性疾患の予防及び治療のためには、基本的に原因となるアレルゲンを避ける、除去する、又は摂取しないことが重要である。
【0005】
また、アレルギー性疾患についての研究が進み、その病態生理が解明されると共にその病態にあった治療薬も開発されているが、それらの薬剤による治療の多くは副作用を伴ない、また、一時的な治療であり、根本的なアレルギー体質を改善することはできなかった。
【0006】
一方、天然物由来で副作用も無く、長期間使用しても安全性が高く、飲食物や化粧料にも利用できるアレルギー性疾患の治療及び予防剤も開発されている。例えば特開平10−175874号公報にはウーロン茶抽出物を有効成分として含有することを特徴とする抗アレルギー剤が開示されている。また、特開2000−139406号公報には柿の葉抽出物を含有するアレルギー予防食品等が開示されている。
【0007】
【発明が解決しようとする課題】
しかし、上記の抗アレルギー剤等は、安全性は高いものの、その効果は充分に満足できるものではなかった。
【0008】
したがって、本発明の目的は、長期間使用しても安全性が高く、かつ充分な抗アレルギー効果を有するトウモロコシ外皮由来の成分を有効成分として含有する抗アレルギー組成物を提供することにある。
【0009】
【課題を解決するための手段】
本発明者らは、上記目的を達成するために鋭意研究した結果、トウモロコシ外皮から調製されたヘミセルロースの部分分解物がアレルギー性疾患、特にアトピー性皮膚炎の発生を抑制することを見出し、本発明を完成するに至った。
【0010】
すなわち、本発明の抗アレルギー組成物は、トウモロコシ外皮から得られたヘミセルロースの部分分解物を有効成分として含有することを特徴とする。
【0011】
本発明においては、前記ヘミセルロースの部分分解物が、トウモロコシ外皮から澱粉質及び蛋白質を除去した残部をアルカリ抽出し、さらに酵素分解して得られたものであることが好ましい。
【0012】
また、前記ヘミセルロースの部分分解物が、ヘミセルロースをキシラナーゼで処理したものであることが好ましい。
【0013】
さらに、前記ヘミセルロースの部分分解物の平均分子量が2万〜20万であることが好ましい。
【0014】
本発明によれば、長期間使用しても副作用が無く安全で、アレルギー性疾患、特にアトピー性皮膚炎を予防又は抑制する抗アレルギー組成物を提供できる。
【0015】
【発明の実施の形態】
本発明の抗アレルギー組成物の有効成分であるトウモロコシ外皮から得られるヘミセルロースの部分分解物の調製方法は、特に制限はなく、公知の方法を採用できる。
【0016】
まず、トウモロコシ外皮からヘミセルロースを抽出する方法としては、例えばアルカリ又は酸による抽出、エクストルーダーやオートクレーブによる加圧、熱水抽出、セルラーゼ等の酵素剤を用いた抽出、あるいはこれらを適宜組み合わせた方法を採用することができる。本発明においては、より高純度のヘミセルロースを得るために、トウモロコシ外皮から澱粉質、蛋白質、更に必要に応じて脂質、無機質等を除去した残部をアルカリ抽出してヘミセルロースを調製することが好ましい。
【0017】
トウモロコシ外皮から澱粉質、蛋白質、更に必要に応じて脂質、無機質等を除去する方法としては、酵素処理、化学的処理、物理的処理のいずれを採用してもよく、あるいはこれらを適宜組み合わせてもよい。酵素処理は、例えばα−アミラーゼ、グルコアミラーゼ等の澱粉分解酵素、プロテアーゼ等の蛋白分解酵素、リパーゼ等の脂質分解酵素、セルラーゼ等の繊維素分解酵素を、pH3〜9、温度30〜100℃の条件下に添加、作用させて処理することにより行われる。また、化学的処理は、例えばトウモロコシ外皮に鉱酸、有機酸の水溶液を添加し、pH2〜5の条件下で加熱するか、又は食品用界面活性剤を添加し、pH3〜8の条件下で熱処理することにより行われる。更に物理的処理は、例えばトウモロコシ外皮をホモゲナイザー、ハンマーミル等の粉砕機で粉砕した後、篩別することにより行われる。
【0018】
また、ヘミセルロースを部分分解する方法としては、繊維素分解酵素、例えば市販のセルラーゼ、キシラナーゼ等で処理する方法が挙げられる。本発明においては、キシラナーゼで処理する方法が特に好ましい。
【0019】
本発明で用いられるヘミセルロースの部分分解物は、具体的には以下のようにして調製することができる。
【0020】
好ましくは上記の前処理をしたトウモロコシ外皮5〜20質量部に、水80〜95質量部を添加し、アルカリ化合物を添加してpH10〜13に調整し、80〜140℃で0.5〜10時間撹拌混合して、ヘミセルロースを抽出する。上記アルカリ化合物としては、特に制限はなく、例えば水酸化カルシウムや水酸化ナトリウムが挙げられる。なお、アルカリ化合物は予め水溶液にして加えてもよい。
【0021】
次いで、この抽出液を清澄濾過した後、pH調整し、50〜60℃の温度下にキシラナーゼを添加して反応させる。キシラナーゼの添加量は、抽出物の固形分1g当たりに対して、0.0001〜10単位程度が好ましく、反応時間は3〜96時間程度が好ましい。
【0022】
なお、キシラナーゼの力価の測定は、トウモロコシ外皮からアルカリ抽出して得たヘミセルロースを基質として、pH7、60℃の反応条件下で、1分間に1μmolのキシロースに相当する還元糖を生成する酵素量を1単位とすることにより行った。
【0023】
また、キシラナーゼとしては、糖化型のものより、液化型のものが好ましく、カビ起源のものでも、バクテリア起源のものでも使用できるが、バクテリア起源のキシラナーゼの方が純度が高いので好ましい。特に好ましい例としては、特公昭50−13357号公報に記載されたアルカリ側に至適pHを有するアルカリキシラナーゼが挙げられる。
【0024】
次いで、加熱等により酵素を失活させた後、反応液を、脱色、脱塩処理し、濃縮、あるいはさらに乾燥することにより、ヘミセルロースの部分分解物を得ることができる。
【0025】
また、上記のようにしてアルカリ抽出したヘミセルロース抽出液を有機酸や無機酸等で中和し、中和によって沈殿した蛋白質を遠心分離等の手段で分離除去した後、その上澄液を必要に応じて更に透析、イオン交換樹脂処理、イオン交換膜処理、限外濾過膜処理、アルコール精製、濾剤処理等を単独又は適宜組み合わせて行ないヘミセルロースを精製し、このヘミセルロースを3〜30質量%含有する溶液を調製して、上記と同様にして酵素反応を行ない、酵素を失活させた後、遠心分離等により固液分離し、上澄液を濃縮、乾燥することにより、より純度の高いヘミセルロースの部分分解物を得ることができる。
【0026】
なお、上記のような方法でトウモロコシ外皮から調製されたヘミセルロースの部分分解物は、「セルエース」(商品名、日本食品化工株式会社製)として市販されている。
【0027】
本発明において、トウモロコシ外皮由来ヘミセルロースの部分分解物は、その平均分子量(質量平均分子量)が2万〜20万であることが好ましく、2万〜10万であることがより好ましく、2万〜4万であることが最も好ましい。このような平均分子量を有するヘミセルロースの部分分解物は、その5w/w%水溶液の粘度が3〜20cps(B型粘度計、60rpm、25℃)と低粘度であり、飲食品等の原料に添加したときに、飲食品等の食感や風味を良好に保つことができる。ヘミセルロースの部分分解物の平均分子量が20万を超えると、粘度が高くなりすぎて飲食品の原料等に添加しにくくなり、2万未満であると、食物繊維としての生理活性効果が失われる虞れがあるため好ましくない。
【0028】
本発明の抗アレルギー組成物は上記ヘミセルロースの部分分解物を主成分として含有し、例えば上記ヘミセルロースの部分分解物を含む水溶液、濃縮液あるいは乾燥粉末などとして製品化することができる。なお、上記ヘミセルロースの部分分解物の他に、除去しきれなかった澱粉質、蛋白質、若干のリグニン、セルロース、灰分等を含有していてもよい。
【0029】
本発明の抗アレルギー組成物は、乾燥粉末とした場合でも容易に水に溶けるので、そのまま健康飲食品、医薬品として利用可能である。また、飲食品に少量添加することにより、飲食品の風味、食感を害することなく抗アレルギー効果を付与することができる。
【0030】
本発明の抗アレルギー組成物を飲食品に添加する場合、飲食品の食感を害することなく抗アレルギー効果を期待できる添加量としては、0.1〜10質量%が好ましい。また、本発明の抗アレルギー組成物の摂取量は、抗アレルギー効果を発現するためには1〜10g/日が好ましく、2〜5g/日が特に好ましい。
【0031】
【実施例】
以下、実施例を挙げて本発明を具体的に説明する。
実施例
トウモロコシ外皮100部に、水1000部、水酸化カルシウム1部を加え、85℃で3時間加熱した。この反応液を60℃まで冷却した後、硫酸を添加してpH7に調整した。
【0032】
そして、特公昭50−13357号公報に記載された方法で調製したアルカリキシラナーゼ(商品名「セルザイム」、日本食品化工株式会社製)を、この反応液の固形分1g当たり0.01単位添加して、60℃で48時間反応させた。酵素反応終了後、90℃で30分間加熱して酵素を失活させた後、濾過して濾液を回収し、さらに清澄濾過、脱色、脱塩を行ない精製した後、スプレードライヤーで噴霧乾燥してトウモロコシ外皮由来ヘミセルロースの部分分解物(粉末)を得た。
【0033】
試験例
受動感作アトピー性皮膚炎モデルマウスを用いて、トウモロコシ外皮由来ヘミセルロースの部分分解物の抗アレルギー効果について検討した。
【0034】
4週齢の雌マウス(BALB/c)12匹(日本クレア(株)より購入)を2群(1群6匹)に分けて、試験群には胃ゾンデを用いて実施例1で調製したヘミセルロースの部分分解物を蒸留水で溶解したものを21日間連続経口投与(ヘミセルロースの部分分解物50mg/kg体重/日)し、コントロール群には蒸留水を同様にして投与した。また、試験期間中は、設定温湿度:24±1℃、55±5%、照明時間:12時間自動点灯・消灯の環境で飼育し、摂餌及び摂水は自由とした。
【0035】
そして、試験対象物質投与終了の翌日(22日目)に、抗DNP−Igモノクローナル抗体(生化学工業(株)製)0.5mlをマウスの尻静脈内に投与して受動的に感作させ、その1時間後、耳介に0.15%DNFBアセトン−オリーブオイル(4:1)溶液を塗布して、IgE抗体による皮膚反応を惹起した。そして、1、4、24、48時間後に惹起により肥厚した耳介の厚さをダイヤルシックネスゲージ(尾崎製作所(株)製)で測定し、得られた各測定値から、下記の式を用いて耳介肥厚増加量を求めた。その結果を表1及び図1に示す。
【0036】
【数1】
耳介肥厚増加量(×10-2mm)=各測定値(×10-2mm)−反応前測定値(×10-2mm)
【0037】
【表1】

Figure 0004800503
【0038】
表1及び図1から、試験群は、DNFBアセトン−オリーブオイル溶液塗布後、1、4、24時間後の測定値において、コントロール群に比べて有意に耳介肥厚が抑制されていることが分かる。なお、上記のアトピー性皮膚炎モデル系は、惹起後1時間後及び24時間後に二峰性のピーク(即時型反応及び遅発型反応)を引き起こすことが知られており、上記の結果から、トウモロコシ外皮由来ヘミセルロースの部分分解物を投与することによりアトピー性皮膚炎を抑制できることが示唆された。
【0039】
【発明の効果】
以上説明したように、本発明によれば、トウモロコシ外皮由来の安全で、経口摂取することによりアレルギー性疾患、特にアトピー性皮膚炎を予防又は抑制できる抗アレルギー組成物を提供できる。
【0040】
本発明の抗アレルギー組成物は、医薬品、飲食品、あるいはそれらへの添加物として、安心して長期にわたり継続して摂取することができ、さらに、ヘミセルロースの部分分解物は低粘度であるため、飲食品等の原料に添加したときに飲食品等の食感や風味を良好に保つことができる。
【図面の簡単な説明】
【図1】 経時的な耳介肥厚増加量の変化を示す図である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an antiallergic composition using corn hull as a raw material.
[0002]
[Prior art]
According to an epidemiological survey, allergic diseases such as Japanese cedar pollinosis and atopic dermatitis have been markedly increased in recent years, and allergen increases, air pollution, food additives, and changes in living environment such as food habits It is considered as the cause.
[0003]
Conventionally, the skin reaction seen in atopic dermatitis has been said to be a typical disease of type I allergy induced by IgE antibody, but it is not a type I allergic reaction due to recent pathological findings and clinical features. Rather, it is said that type IV allergic reaction is largely involved.
[0004]
In order to prevent and treat allergic diseases as described above, it is important to avoid, remove or not ingest the causal allergen basically.
[0005]
In addition, research on allergic diseases has progressed, and the pathophysiology has been elucidated, and therapeutic drugs suitable for the pathological conditions have been developed, but many of the treatments with these drugs have no side effects and are temporary. Treatment, and could not improve the fundamental allergy.
[0006]
On the other hand, therapeutic and preventive agents for allergic diseases that are derived from natural products, have no side effects, have high safety even when used for a long period of time, and can be used in foods and cosmetics have also been developed. For example, Japanese Patent Laid-Open No. 10-175874 discloses an antiallergic agent characterized by containing oolong tea extract as an active ingredient. Japanese Unexamined Patent Publication No. 2000-139406 discloses an allergy-preventing food containing persimmon leaf extract.
[0007]
[Problems to be solved by the invention]
However, although the above-mentioned antiallergic agents and the like are high in safety, their effects are not fully satisfactory.
[0008]
Accordingly, an object of the present invention is to provide an antiallergic composition containing as an active ingredient a component derived from corn hulls which has high safety even after long-term use and has a sufficient antiallergic effect.
[0009]
[Means for Solving the Problems]
As a result of diligent research to achieve the above object, the present inventors have found that a partial degradation product of hemicellulose prepared from corn hulls suppresses the occurrence of allergic diseases, particularly atopic dermatitis. It came to complete.
[0010]
That is, the antiallergic composition of the present invention is characterized by containing as an active ingredient a partial degradation product of hemicellulose obtained from corn hulls.
[0011]
In the present invention, it is preferable that the partially decomposed product of hemicellulose is obtained by alkali-extracting the remainder obtained by removing starch and protein from corn hulls and further enzymatically decomposing.
[0012]
Moreover, it is preferable that the partial decomposition product of hemicellulose is a product obtained by treating hemicellulose with xylanase.
[0013]
Further, the average molecular weight of the partially decomposed product of hemicellulose is preferably 20,000 to 200,000.
[0014]
According to the present invention, it is possible to provide an antiallergic composition that is safe without side effects even after long-term use, and that prevents or suppresses allergic diseases, particularly atopic dermatitis.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
The method for preparing the partially degraded hemicellulose obtained from corn hulls, which is an active ingredient of the antiallergic composition of the present invention, is not particularly limited, and known methods can be employed.
[0016]
First, as a method for extracting hemicellulose from corn hulls, for example, extraction with an alkali or acid, pressurization with an extruder or autoclave, hot water extraction, extraction using an enzyme agent such as cellulase, or a combination of these methods as appropriate. Can be adopted. In the present invention, in order to obtain higher-purity hemicellulose, it is preferable to prepare hemicellulose by alkali-extracting the remainder obtained by removing starch, protein, and, if necessary, lipids, minerals, and the like from corn hulls.
[0017]
As a method for removing starch, protein and, if necessary, lipids, minerals, etc. from corn hulls, any of enzyme treatment, chemical treatment, physical treatment may be adopted, or these may be combined appropriately. Good. Enzymatic treatment includes, for example, starch-degrading enzymes such as α-amylase and glucoamylase, proteolytic enzymes such as protease, lipolytic enzymes such as lipase, and fibrinolytic enzymes such as cellulase at pH 3 to 9 and temperature 30 to 100 ° C. It is carried out by adding and acting under conditions. In addition, for example, chemical treatment may be performed by adding an aqueous solution of a mineral acid or an organic acid to corn hulls and heating under conditions of pH 2 to 5 or adding a surfactant for food and under conditions of pH 3 to 8. This is done by heat treatment. Further, the physical treatment is performed, for example, by pulverizing corn hulls with a pulverizer such as a homogenizer or a hammer mill, followed by sieving.
[0018]
Examples of the method for partially decomposing hemicellulose include a method of treating with a fibrinolytic enzyme such as a commercially available cellulase or xylanase. In the present invention, a method of treating with xylanase is particularly preferred.
[0019]
Specifically, the partially decomposed product of hemicellulose used in the present invention can be prepared as follows.
[0020]
Preferably, 80 to 95 parts by mass of water is added to 5 to 20 parts by mass of the corn hull subjected to the above pretreatment, and an alkali compound is added to adjust to pH 10 to 13, and 0.5 to 10 at 80 to 140 ° C. Mix for a period of time to extract hemicellulose. There is no restriction | limiting in particular as said alkali compound, For example, calcium hydroxide and sodium hydroxide are mentioned. The alkali compound may be added as an aqueous solution in advance.
[0021]
Next, this extract is clarified and filtered, pH is adjusted, and xylanase is added and reacted at a temperature of 50 to 60 ° C. The amount of xylanase added is preferably about 0.0001 to 10 units per gram of the solid content of the extract, and the reaction time is preferably about 3 to 96 hours.
[0022]
The titer of xylanase is determined by measuring the amount of enzyme that produces reducing sugar corresponding to 1 μmol of xylose per minute under the reaction conditions of pH 7 and 60 ° C. using hemicellulose obtained by alkali extraction from corn hull as a substrate. Was made to be 1 unit.
[0023]
As the xylanase, a liquefied type is preferable to a saccharified type, and either a fungal or bacterial source can be used, but a bacterial xylanase is preferred because of its higher purity. Particularly preferred examples include alkali xylanase having an optimum pH on the alkali side described in JP-B-50-13357.
[0024]
Next, the enzyme is deactivated by heating or the like, and then the reaction solution is decolorized, desalted, concentrated, or further dried to obtain a partially decomposed product of hemicellulose.
[0025]
Also, neutralize the hemicellulose extract extracted with alkali as described above with organic acid or inorganic acid, etc., and separate and remove proteins precipitated by neutralization by means such as centrifugation, and then use the supernatant. Accordingly, dialysis, ion exchange resin treatment, ion exchange membrane treatment, ultrafiltration membrane treatment, alcohol purification, filter agent treatment, etc. are performed alone or in appropriate combination to purify hemicellulose, and this hemicellulose is contained in an amount of 3 to 30% by mass. Prepare a solution, perform the enzyme reaction in the same manner as described above, inactivate the enzyme, solid-liquid separate by centrifugation, etc., and concentrate and dry the supernatant to obtain higher purity hemicellulose. Partially decomposed products can be obtained.
[0026]
In addition, the partial degradation product of hemicellulose prepared from corn hulls by the method as described above is commercially available as “Cell Ace” (trade name, manufactured by Nippon Shokuhin Kako Co., Ltd.).
[0027]
In the present invention, the partially decomposed product of corn hull-derived hemicellulose preferably has an average molecular weight (mass average molecular weight) of 20,000 to 200,000, more preferably 20,000 to 100,000, and more preferably 20,000 to 4 Most preferred is 10,000. The partially decomposed product of hemicellulose having such an average molecular weight has a low viscosity of 3 to 20 cps (B-type viscometer, 60 rpm, 25 ° C.) of its 5 w / w% aqueous solution, and is added to raw materials such as food and drink When done, the texture and flavor of food and drink can be kept good. If the average molecular weight of the partially degraded hemicellulose exceeds 200,000, the viscosity becomes too high to be added to the raw material of food and drink, and if it is less than 20,000, the physiologically active effect as dietary fiber may be lost. This is not preferable.
[0028]
The antiallergic composition of the present invention contains the above-mentioned partially decomposed product of hemicellulose as a main component, and can be commercialized, for example, as an aqueous solution, concentrated solution or dry powder containing the partially decomposed product of hemicellulose. In addition to the above partially decomposed product of hemicellulose, it may contain starch, protein, some lignin, cellulose, ash, etc. that could not be removed.
[0029]
Since the antiallergic composition of the present invention is easily dissolved in water even when it is a dry powder, it can be used as it is as a health food or drink or a pharmaceutical product. Moreover, by adding a small amount to a food or drink, an antiallergic effect can be imparted without harming the flavor and texture of the food or drink.
[0030]
When adding the antiallergic composition of this invention to food-drinks, 0.1-10 mass% is preferable as addition amount which can anticipate an antiallergic effect, without harming the food texture of food-drinks. In addition, the intake of the antiallergic composition of the present invention is preferably 1 to 10 g / day, and particularly preferably 2 to 5 g / day, in order to develop an antiallergic effect.
[0031]
【Example】
Hereinafter, the present invention will be specifically described with reference to examples.
EXAMPLE 1000 parts of water and 1 part of calcium hydroxide were added to 100 parts of corn hulls and heated at 85 ° C. for 3 hours. After cooling this reaction liquid to 60 degreeC, the sulfuric acid was added and it adjusted to pH7.
[0032]
Then, 0.01 unit of alkali xylanase (trade name “Cellzyme”, manufactured by Nippon Shokuhin Kako Co., Ltd.) prepared by the method described in Japanese Patent Publication No. 50-13357 was added per 1 g of the solid content of the reaction solution. , Reacted at 60 ° C. for 48 hours. After the enzyme reaction is completed, the enzyme is inactivated by heating at 90 ° C. for 30 minutes, and then filtered to collect the filtrate. After further purification by clarification, decolorization, and desalting, it is spray-dried with a spray dryer. A partially decomposed product (powder) of corn hull-derived hemicellulose was obtained.
[0033]
Test Example The antiallergic effect of a partially decomposed product of corn hull-derived hemicellulose was examined using a passively sensitized atopic dermatitis model mouse.
[0034]
Twelve 4-week-old female mice (BALB / c) (purchased from Nippon Claire Co., Ltd.) were divided into 2 groups (6 mice per group), and the test group was prepared in Example 1 using a stomach tube. A hemicellulose partial degradation product dissolved in distilled water was orally administered continuously for 21 days (hemicellulose partial degradation product 50 mg / kg body weight / day), and distilled water was similarly administered to the control group. During the test period, the animals were reared in an environment where the set temperature and humidity were 24 ± 1 ° C., 55 ± 5%, and the lighting time was automatically turned on / off for 12 hours.
[0035]
Then, on the next day (22nd day) after the administration of the test substance, 0.5 ml of anti-DNP-Ig monoclonal antibody (Seikagaku Corporation) is administered into the buttocks of mice to passively sensitize. One hour later, a 0.15% DNFB acetone-olive oil (4: 1) solution was applied to the auricle to induce a skin reaction by IgE antibody. Then, the thickness of the auricle thickened by induction after 1, 4, 24, 48 hours was measured with a dial thickness gauge (manufactured by Ozaki Seisakusho Co., Ltd.), and from the obtained measured values, the following formula was used. The amount of increase in auricle thickness was determined. The results are shown in Table 1 and FIG.
[0036]
[Expression 1]
Auricular thickening increase (× 10 −2 mm) = each measured value (× 10 −2 mm) −measured value before reaction (× 10 −2 mm)
[0037]
[Table 1]
Figure 0004800503
[0038]
From Table 1 and FIG. 1, it can be seen that in the test group, the ear thickness was significantly suppressed compared to the control group in the measured values after 1, 4 and 24 hours after application of the DNFB acetone-olive oil solution. . The above atopic dermatitis model system is known to cause a bimodal peak (immediate type reaction and delayed type reaction) after 1 hour and 24 hours after induction. From the above results, It was suggested that atopic dermatitis can be suppressed by administering a partial degradation product of corn hull-derived hemicellulose.
[0039]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an antiallergic composition that is safe from corn hulls and can prevent or suppress allergic diseases, particularly atopic dermatitis, by ingestion.
[0040]
The anti-allergic composition of the present invention can be ingested continuously for a long period of time as a pharmaceutical product, food or drink, or an additive thereto, and further, the partially decomposed product of hemicellulose has a low viscosity. When added to a raw material such as a food, the texture and flavor of the food and drink can be kept good.
[Brief description of the drawings]
FIG. 1 is a diagram showing a change in an increase in auricular thickening over time.

Claims (5)

トウモロコシ外皮から得られたヘミセルロースの部分分解物を有効成分として含有することを特徴とする抗アレルギー組成物。An antiallergic composition comprising, as an active ingredient, a partial degradation product of hemicellulose obtained from corn hulls. 前記ヘミセルロースの部分分解物が、トウモロコシ外皮から澱粉質及び蛋白質を除去した残部をアルカリ抽出し、さらに酵素分解して得られたものである請求項1に記載の抗アレルギー組成物。The antiallergic composition according to claim 1, wherein the partially decomposed product of hemicellulose is obtained by alkali-extracting the remainder after removing starch and protein from corn hulls and further enzymatically decomposing. 前記ヘミセルロースの部分分解物が、ヘミセルロースをキシラナーゼで処理したものである、請求項1又は2に記載の抗アレルギー組成物。The antiallergic composition according to claim 1 or 2, wherein the partial degradation product of hemicellulose is obtained by treating hemicellulose with xylanase. 前記ヘミセルロースの部分分解物の平均分子量が2万〜20万である請求項1〜3のいずれか一つに記載の抗アレルギー組成物。The antiallergic composition according to any one of claims 1 to 3, wherein the hemicellulose partial decomposition product has an average molecular weight of 20,000 to 200,000. 経口投与によりアトピー性皮膚炎を予防又は抑制する作用を有する請求項1〜4のいずれか一つに記載の抗アレルギー組成物。The antiallergic composition according to any one of claims 1 to 4, which has an action of preventing or suppressing atopic dermatitis by oral administration.
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