JP2004331589A - Protein or treated product thereof, exhibiting activity for ameliorating lipid metabolism and derived from echinochloa utilis kurohie - Google Patents

Protein or treated product thereof, exhibiting activity for ameliorating lipid metabolism and derived from echinochloa utilis kurohie Download PDF

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JP2004331589A
JP2004331589A JP2003130526A JP2003130526A JP2004331589A JP 2004331589 A JP2004331589 A JP 2004331589A JP 2003130526 A JP2003130526 A JP 2003130526A JP 2003130526 A JP2003130526 A JP 2003130526A JP 2004331589 A JP2004331589 A JP 2004331589A
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protein
black
diabetes
derived
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Naoyuki Nishizawa
直行 西澤
Mitsuru Watanabe
満 渡辺
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Nat Agric & Bio Oriented Res
National Agriculture and Bio Oriented Research Organization NARO
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Nat Agric & Bio Oriented Res
National Agriculture and Bio Oriented Research Organization NARO
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  • Medicines Containing Plant Substances (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a protein or a treated product thereof, derived from Echinochloa utilis kurohie, exhibiting activities for ameliorating lipid metabolism, and as a result, capable of preventing/treating type II diabetes. <P>SOLUTION: The protein or the treated product thereof is derived from the Echinochloa utilis kurohie, and exhibits the activities for ameliorating the lipid metabolism. The protein or the treated product thereof can be used for preventing/treating the type II diabetes. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、黒ヒエ由来で脂質代謝を改善させる活性を示すタンパク質又はその処理物に関する。
【0002】
【従来の技術】
糖尿病には、インスリン依存型の病態を表わすI型糖尿病と、インスリン分泌不全型とインスリン抵抗型の病態を表わすII型糖尿病がある。II型糖尿病は、糖尿病の90%以上を占めており、患者数はおよそ700万人といわれ、その数は増加傾向にある。一般にII型糖尿病は中高年者に発見され、高血糖状態が何年も続く場合が多く、食事療法、運動療法が治療の基礎となる。糖尿病治療中の患者の多くは経口血糖降下薬の投与を受けているが、経口血糖降下薬(特にグリクロピラミドなどスルホニール尿素系の剤、塩酸ブホルミンなどピグアナイド系の剤、グリブゾールなどスルホンアミド系の剤)等は、造血器障害、肝機能障害、胃腸障害などの副作用を伴うという問題がある。このため、安全なII型糖尿病の予防・治療薬の開発が期待されている。
【0003】
また、II型糖尿病に関連して、近年、脂肪細胞から分泌されるホルモンであるアディポネクチンが注目されている。アディポネクチンは、糖尿病患者では分泌が低下しており、II型糖尿病のマウスにアディポネクチンを投与すると、脂肪の燃焼が促進され、中性脂肪の量が低下し、インスリン抵抗性の状態が大きく改善されることが確認されている。
【0004】
一方、ヒエ(Echinochloa utilis)は、従来より食用や飼料用に供されている種子繁殖作物である。ヒエは、耐冷性が強く、痩地にも栽培が可能であることから、東北北部や北海道地域で多く栽培されてきた。近年、ヒエの機能性についての研究が進み、ヒエの有用な機能のいくつかが解明されている。例えば特許文献1は、血漿中のHDL−コレステロール濃度の上昇機能を有し、動脈指数効果を下げるヒエ由来の蛋白質組成物について説明している。また、特許文献2は、ガン、肝疾患、内分泌及び代謝疾患、腎臓疾患の治療のためのヒエを混ぜた治療食について説明している。
【0005】
黒ヒエ(Echinochloa utilis. (Ohwi et Yabuno) cv. Kurohie)はヒエの1種であるが、一般のヒエでは未熟時の護穎(穂)の色が緑であるものが多いのに対して、黒ヒエの未熟時の護穎の色は紫色であり、また田ヒエに比べて草丈が長いといった特徴を有している。さらに、黒ヒエはかつて岩手県の下閉伊、二戸地方で栽培面積の多かった品種である。現在のところ、この黒ヒエについての有用な機能を解明した例は報告されていない。また、ヒエがアディポネクチン上昇作用を有することについての報告はない。
【0006】
【特許文献1】
特開平9−110897号公報
【特許文献2】
特開2001−172192号公報
【0007】
【発明が解決しようとする課題】
本発明の目的は、黒ヒエ由来で脂質代謝を改善させるタンパク質又はその処理物を提供することである。
本発明のもう一つの目的は、II型糖尿病の予防・治療に用いる黒ヒエ由来で脂質代謝を改善させるタンパク質又はその処理物を提供することである。
【0008】
【課題を解決するための手段】
本発明は、以下の発明を包含する。
(1) 黒ヒエ由来で脂質代謝を改善させる活性を示すタンパク質又はその処理物。
(2) II型糖尿病の予防・治療に用いる上記(1)記載のタンパク質又はその処理物。
(3) 上記(1)又は(2)記載のタンパク質又はその処理物を添加してなる食品。
(4) 黒ヒエ由来のタンパク質又はその処理物を有効成分として含有するII型糖尿病予防・治療薬。
(5) 食品に添加するための、上記(4)記載のII型糖尿病予防・治療薬。
【0009】
【発明の実施の形態】
本発明は、黒ヒエ由来で脂質代謝を改善させる活性を示すタンパク質又はその処理物に関する。
ここで、本発明の黒ヒエとして、従来より食用・飼料用に栽培されている黒ヒエを用いることができる。本発明では、特に、黒ヒエの子実を用いる。
【0010】
黒ヒエの子実は、脱穀したものをそのまま用いてもよいし、脱穀後、さらに破砕、粉砕等により粉末化処理したものを用いてもよい。また、黒ヒエの蛋白質含量を増加させるために、脱穀又はさらに粉末化処理した黒ヒエにさらに濃縮化処理を施した黒ヒエ蛋白質濃縮物を用いることが好ましい。
【0011】
濃縮化処理は、例えば以下のように行うことができる。
まず、脱穀又はさらに粉末化処理した黒ヒエ(以下、単に黒ヒエとする)に溶媒を添加して一定時間加熱し、糊化させる。通常、黒ヒエ1kg当り10リットルの溶媒を使用する。
【0012】
加熱温度は、特に制限はないが、通常溶媒の融点ないし溶媒の沸点の範囲内とする。また、加熱は、通常常圧下で行うが、加圧下又は減圧下で行ってもよい。加熱時間は、加熱温度等により異なるが、通常30分〜1時間である。
【0013】
次に、この糊化した黒ヒエの液のpHが7であるのを確認する。次いで、好ましくはグリコアミラーゼ及びα−アミラーゼを、糊化黒ヒエ1kg当り3.5ml及び850mg添加し、添加した酵素の至適pHに調整して、55〜60℃で20〜24時間、酵素反応を行う。反応終了後、3000〜4000rpmで5〜10分間遠心分離を行う。遠心分離機としては、例えばKOKUSAN社製のH−9Rを用いることができる。遠心分離終了後、沈殿物をすべて回収し、ヘキサン等で脱脂し、ヘキサン等で洗浄した後、風乾させて所望の黒ヒエ蛋白質濃縮物を得る。
【0014】
また、本発明の黒ヒエ蛋白質濃縮物は、公知の医薬用担体と組合せて製剤化し、II型糖尿病予防・治療薬とすることができる。投与形態としては、特に制限はなく、必要に応じ適宜選択されるが、一般には錠剤、カプセル剤、顆粒剤、細粒剤として使用される。
【0015】
本発明のII型糖尿病予防・治療薬の投与量は、患者の年令、体重、疾患の程度、投与経路により異なるが、経口投与では、黒ヒエ蛋白質濃縮物として、通常1日10〜3000mgであり、投与回数は、通常、経口投与では1日1〜3回である。
【0016】
経口剤は、例えばデンプン、乳糖、白糖、マンニット、カルボキシメチルセルロース、コーンスターチ、無機塩類等の賦形剤を用いて常法に従って製造される。
この種の製剤には、適宜前記賦形剤の他に、結合剤、崩壊剤、界面活性剤、滑沢剤、流動性促進剤、矯味剤、着色剤、香料等を使用することができる。
【0017】
結合剤の具体例としては、結晶セルロース、結晶セルロース・カルメロースナトリウム、メチルセルロース、ヒドロキシプロピルセルロース、低置換度ヒドロキシプロピルセルロース、ヒドロキシプロピルメチルセルロース、ヒドロキシプロピルメチルセルロースフタレート、ヒドロキシプロピルメチルセルロースアセテートサクシネート、カルメロースナトリウム、エチルセルロース、カルボキシメチルエチルセルロース、ヒドロキシエチルセルロース、コムギデンプン、コメデンプン、トウモロコシデンプン、バレイショデンプン、デキストリン、アルファー化デンプン、部分アルファー化デンプン、ヒドロキシプロピルスターチ、プルラン、ポリビニルピロリドン、アミノアルキルメタクリレートコポリマーE、アミノアルキルメタクリレートコポリマーRS、メタクリル酸コポリマーL、メタクリル酸コポリマー、ポリビニルアセタールジエチルアミノアセテート、ポリビニルアルコール、アラビアゴム、アラビアゴム末、寒天、ゼラチン、白色セラック、トラガント、精製白糖、マクロゴールが挙げられる。
【0018】
崩壊剤の具体例としては、結晶セルロース、メチルセルロース、低置換度ヒドロキシプロピルセルロース、カルメロース、カルメロースカルシウム、カルメロースナトリウム、クロスカルメロースナトリウム、コムギデンプン、コメデンプン、トウモロコシデンプン、バレイショデンプン、部分アルファー化デンプン、ヒドロキシプロピルスターチ、カルボキシメチルスターチナトリウム、トラガントが挙げられる。
【0019】
界面活性剤の具体例としては、大豆レシチン、ショ糖脂肪酸エステル、ステアリン酸ポリオキシル、ポリオキシエチレン硬化ヒマシ油、ポリオキシエチレンポリオキシプロピレングリコール、セスキオレイン酸ソルビタン、トリオレイン酸ソルビタン、モノステアリン酸ソルビタン、モノパルミチン酸ソルビタン、モノラウリン酸ソルビタン、ポリソルベート、モノステアリン酸グリセリン、ラウリル硫酸ナトリウム、ラウロマクロゴールが挙げられる。
【0020】
滑沢剤の具体例としては、コムギデンプン、コメデンプン、トウモロコシデンプン、ステアリン酸、ステアリン酸カルシウム、ステアリン酸マグネシウム、含水二酸化ケイ素、軽質無水ケイ酸、合成ケイ酸アルミニウム、乾燥水酸化アルミニウムゲル、タルク、メタケイ酸アルミン酸マグネシウム、リン酸水素カルシウム、無水リン酸水素カルシウム、ショ糖脂肪酸エステル、ロウ類、水素添加植物油、ポリエチレングリコールが挙げられる。
【0021】
流動性促進剤の具体例としては、含水二酸化ケイ素、軽質無水ケイ酸、乾燥水酸化アルミニウムゲル、合成ケイ酸アルミニウム、ケイ酸マグネシウムが挙げられる。
本発明のII型糖尿病予防・治療薬を液剤、シロップ剤、懸濁剤、乳剤、エリキシル剤として投与する場合には、矯味矯臭剤、着色剤を含有してもよい。
【0022】
また、本発明の黒ヒエ蛋白質濃縮物を食品や飲料等に添加して、いわゆる特定保健用食品(例えば、II型糖尿病改善予防・治療食品)等を製造することもできる。
本発明で用いる黒ヒエは現在までに食用・飼料用に供されているものであり、安全性は確立されており、長期の使用においても副作用のおそれがない。
【0023】
【実施例】
以下、実施例により本発明をさらに具体的に説明するが、本発明の範囲はこれらの実施例に限定されるものではない。
【0024】
(実施例1)黒ヒエ蛋白質濃縮物の調製
独立行政法人農業技術研究機構東北農業研究センターより入手した黒ヒエを脱穀、粉末化して得られた黒ヒエ粉末10kgを用いて、黒ヒエ蛋白質含量20%の飼料を作成した。
【0025】
まず、黒ヒエ粉末に、黒ヒエ粉末400gあたり蒸留水4リットルを加えて、90℃で1時間加熱して糊化した。糊化黒ヒエ粉末の温度が60℃まで下がった後、pHが7.0であることを確認し、グルコアミラーゼ1.4mlと、α−アミラーゼ340mgを添加し、60℃で24時間酵素反応を行い、黒ヒエのアミロース部分を加水分解した。反応生成物をKOKUSAN社製のH−9Rを用いて、4,000rpmで8分間遠心分離を行ったところ、沈殿物が生じた。この沈殿物をすべて回収し、凍結乾燥を行い、その後、凍結乾燥物をヘキサンで脱脂した。この操作を5回繰り返した後、凍結乾燥物を風乾して黒ヒエ蛋白質濃縮物を得た。
【0026】
この黒ヒエ蛋白質濃縮物の組成は、100gあたり水分8.0、蛋白質含量58.0、炭水化物29.8、灰分1.1、脂質3.1及び食物繊維10.2(不溶性食物繊維10.2)%であり、エネルギーは379kcalであった。
【0027】
(実施例2)黒ヒエ蛋白質濃縮物のアミノ酸組成
実施例1で得られた黒ヒエ蛋白質濃縮物のアミノ酸組成は、表1に示したとおりであった。
【0028】
本発明の黒ヒエ蛋白質濃縮物の特徴として、アミノ酸組成中グルタミン酸、アラニン、ロイシンの割合が高く、リジンやスレオニンの割合が低くなっていることが挙げられる。また、特許文献1に記載された従来のヒエのアミノ酸組成と比較した場合、本発明の黒ヒエ蛋白質濃縮物は、上記特許文献1のヒエよりもチロシン及びトリプトファンの割合が高く、アルギニン、リジン、グリシン及びプロリンの割合が低くなっており、両者のアミノ酸組成が異なっていることが明らかである。
【0029】
【表1】

Figure 2004331589
【0030】
(実施例3)動物実験用飼料の調製
実施例1で得られた黒ヒエ蛋白質濃縮物を用いて、以下の組成の、動物実験用の黒ヒエ蛋白質濃縮物飼料を調製した(g/100g):黒ヒエ蛋白質濃縮物29.2、塩3.5、ビタミン1.0、油6.1、コリン重酒石酸塩0.2、セルロース粉末2、α−トウモロコシデンプン46、L−リジン塩酸塩1.73、L−スレオニン0.2、ショ糖10。
【0031】
対照として、蛋白質としてカゼインを20%含み、L−リジン塩酸塩、L−スレオニンを含まず、0.3%のL−シスチンを加えた以外は上記と同組成であるカゼイン飼料を調製した。
【0032】
(実施例4)黒ヒエ蛋白質濃縮物摂取による脂質代謝及びII型糖尿病改善についての実験
II型糖尿病モデルラットであるGK系雄ラット(7週齢)に、実施例3で調製した黒ヒエ蛋白質濃縮物飼料を自由摂取させ、20日間飼育した。対照群として、同じII型糖尿病モデルラットであるGK系雄ラット(7週齢)を用いて、実施例3で調製したカゼイン飼料を自由摂取させ、20日間飼育した。
飼育最終日、各群のラットを5時間絶食させた後、腹大静脈よりおよそ5mlの採血を行った。また、肝臓と精巣脂肪組織を速やかに摘出した。
【0033】
これらの試料を用いて、肝臓重量、精巣脂肪組織重量の測定、血漿中の血糖値、中性脂肪、総コレステロール濃、HDL−コレステロール、LDL−VLDL−コレステロール、インスリン及びアディポネクチンの測定、肝臓のコレステロール及び中性脂肪濃度の測定、ならびに血液中の糖化ヘモグロビンの測定を行った。
これらの結果を、各群のラットの体重や飼料摂取量とともに表2に示した。各群の間で有意差が示されたものには、アステリスク(*)を付した。
【0034】
【表2】
Figure 2004331589
【0035】
表2に示したように、各群の飼育最終日の体重及び飼料摂取量に有意差はみられなかった。精巣脂肪組織重量は、黒ヒエ蛋白質濃縮物を摂取した群では有意に減少した(p<0.01)。血漿脂質濃度について、黒ヒエ蛋白質濃縮物を摂取した群では、HDL−コレステロールが有意に増加した(p<0.05)。また、インスリン濃度は、各群の間で有意な差はみられなかったが、血糖値は黒ヒエ蛋白質濃縮物を摂取した群では有意に減少した(p<0.05)。さらに、アディポネクチン濃度は黒ヒエ蛋白質濃縮物を摂取した群では有意に増加した(p<0.05)。血液中の糖化ヘモグロビン濃度は、各群間で有意な差はみられなかった。肝臓中の脂質濃度は、2群間で有意な差はみられなかった。
【0036】
すなわち、黒ヒエ蛋白質濃縮物を摂取した群では、精巣脂肪組織重量の減少、血漿中HDL−コレステロール濃度の上昇、血糖値の低下及びアディポネクチンの上昇がもたらされており、脂質代謝が改善されていた。
【0037】
以上の結果より、黒ヒエ蛋白質濃縮物は、脂質代謝及びII型糖尿病を改善する機能を有しており、このためII型糖尿病を予防・治療できることが明らかになった。
【0038】
(実施例5)黒ヒエパンの製造
黒ヒエ蛋白質濃縮物を含むパンを製造した。成分組成は、以下のとおりであっ(g):小麦粉90、黒ヒエ10、生イースト2.2、三温糖7、天塩1.6、水65。これらを混合した後、醗酵させて焙焼製造した。形状は山形とした。この黒ヒエパンは、冷凍保存が可能であった。
【0039】
【発明の効果】
以上のように、本発明の黒ヒエ由来のタンパク質又はその処理物は、精巣脂肪組織重量の減少、血漿中HDL−コレステロール濃度の上昇、血糖値の低下及びアディポネクチンの上昇等、脂質代謝を改善する機能を有しており、このためII型糖尿病を予防・治療することができる。特に、アディポネクチンの上昇は、従来のヒエの研究では確認されていない機能である。
【0040】
また、本発明の黒ヒエ由来のタンパク質又はその処理物は、食用・飼料用として用いられている黒ヒエを用いており、長期の使用においても副作用のおそれがない。
本発明の黒ヒエ由来のタンパク質又はその処理物は、食品や医薬品等に広く適用することができる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a protein or a processed product thereof, which is derived from black barn and has an activity of improving lipid metabolism.
[0002]
[Prior art]
Diabetes is classified into type I diabetes, which indicates an insulin-dependent type, and type II diabetes, which indicates an insulin secretory type and an insulin resistance type. Type II diabetes accounts for more than 90% of diabetes, the number of patients is said to be about 7 million, and the number is increasing. Generally, type II diabetes is found in middle-aged and elderly people, and hyperglycemia often persists for many years. Diet therapy and exercise therapy are the basis of treatment. Many patients undergoing treatment for diabetes receive oral hypoglycemic drugs. However, oral hypoglycemic drugs (especially sulfonyl urea drugs such as glyclopyramide, piguanide drugs such as buformin hydrochloride, and sulfonamide drugs such as Agents) have the problem of causing side effects such as hematopoietic disorders, liver dysfunction, and gastrointestinal disorders. Therefore, development of safe preventive / therapeutic agents for type II diabetes is expected.
[0003]
In addition, in connection with type II diabetes, adiponectin, a hormone secreted from fat cells, has recently attracted attention. Adiponectin is diminished in diabetic patients, and administration of adiponectin to type II diabetic mice promotes fat burning, reduces triglycerides, and greatly improves insulin resistance That has been confirmed.
[0004]
On the other hand, barnyard millet (Echinochloa utilis) is a seed breeding crop conventionally used for food and feed. Millet has been cultivated in northern Tohoku and Hokkaido regions because it has high cold resistance and can be cultivated even in slim land. In recent years, studies on the functionality of barnyard grass have progressed, and some useful functions of barnyardgrass have been elucidated. For example, Patent Literature 1 describes a millet-derived protein composition that has a function of increasing the concentration of HDL-cholesterol in plasma and reduces the arterial index effect. Patent Literature 2 describes a therapeutic diet mixed with barley for the treatment of cancer, liver disease, endocrine and metabolic disease, and kidney disease.
[0005]
Kurohie (Echinochloa utilis. (Ohwi et Yabuno) cv. Kurohie) is a kind of barnyard grass. In general, most of the common barnyard grasses have green immature grains (ears), whereas The immature germ of the black barn is purple and has a longer plant height than the rice field. In addition, black barn is a variety that used to have a large cultivation area in the Shimohei and Ninohe districts of Iwate Prefecture. At present, no examples have been reported to elucidate the useful functions of this black millet. In addition, there is no report that the millet has an adiponectin elevating effect.
[0006]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 9-110897 [Patent Document 2]
JP 2001-172192 A
[Problems to be solved by the invention]
An object of the present invention is to provide a protein or a processed product thereof, which is derived from black millet and improves lipid metabolism.
Another object of the present invention is to provide a protein or a processed product thereof that improves lipid metabolism and is derived from black millet and used for prevention and treatment of type II diabetes.
[0008]
[Means for Solving the Problems]
The present invention includes the following inventions.
(1) A protein or a processed product thereof that is derived from black barn and has an activity of improving lipid metabolism.
(2) The protein or the processed product thereof according to the above (1), which is used for prevention / treatment of type II diabetes.
(3) A food to which the protein or the processed product thereof according to (1) or (2) is added.
(4) A prophylactic / therapeutic agent for type II diabetes, comprising a protein derived from black barn or a processed product thereof as an active ingredient.
(5) The preventive / therapeutic agent for type II diabetes according to the above (4), which is added to a food.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention relates to a protein or a processed product thereof, which is derived from black barn and has an activity of improving lipid metabolism.
Here, as the black millet of the present invention, a black millet conventionally cultivated for food and feed can be used. In the present invention, in particular, grain of black barn is used.
[0010]
As the grains of the black millet, those obtained by threshing may be used as they are, or those obtained by threshing and further pulverized by crushing, pulverization or the like may be used. Further, in order to increase the protein content of the black millet, it is preferable to use a black millet protein concentrate obtained by further subjecting a black millet that has been threshed or further powdered to a further concentration treatment.
[0011]
The concentration treatment can be performed, for example, as follows.
First, a solvent is added to threshed or further powdered black millet (hereinafter simply referred to as black millet) and heated for a certain time to gelatinize. Usually, 10 liters of solvent are used per kg of black barn.
[0012]
The heating temperature is not particularly limited, but is usually in the range of the melting point of the solvent or the boiling point of the solvent. The heating is usually performed under normal pressure, but may be performed under increased pressure or reduced pressure. The heating time varies depending on the heating temperature and the like, but is usually 30 minutes to 1 hour.
[0013]
Next, it is confirmed that the pH of the gelatinized black millet liquid is 7. Next, preferably, 3.5 ml and 850 mg of glycoamylase and α-amylase are added to 1 kg of gelatinized black barn, and the pH of the added enzyme is adjusted to an optimum pH, and the enzyme reaction is carried out at 55 to 60 ° C. for 20 to 24 hours. I do. After the completion of the reaction, centrifugation is performed at 3000 to 4000 rpm for 5 to 10 minutes. As a centrifuge, for example, H-9R manufactured by KOKUSAN can be used. After the centrifugation, all the precipitates are collected, degreased with hexane or the like, washed with hexane or the like, and then air-dried to obtain a desired black millet protein concentrate.
[0014]
Further, the black millet protein concentrate of the present invention can be formulated as a combination with a known pharmaceutical carrier to obtain a type II diabetes preventive / therapeutic agent. The administration form is not particularly limited and may be appropriately selected as necessary, but is generally used as tablets, capsules, granules, and fine granules.
[0015]
The dose of the type II diabetes preventive / therapeutic agent of the present invention varies depending on the age, body weight, degree of disease, and administration route of the patient. However, in oral administration, the concentration is usually 10 to 3000 mg per day as a black barn protein concentrate. Yes, the administration frequency is usually 1 to 3 times a day for oral administration.
[0016]
Oral preparations are produced in a conventional manner using excipients such as starch, lactose, sucrose, mannitol, carboxymethylcellulose, corn starch, inorganic salts and the like.
In this type of preparation, a binder, a disintegrant, a surfactant, a lubricant, a fluidity promoter, a flavoring agent, a coloring agent, a flavor, and the like can be appropriately used in addition to the excipient.
[0017]
Specific examples of the binder include crystalline cellulose, crystalline cellulose and carmellose sodium, methylcellulose, hydroxypropylcellulose, low-substituted hydroxypropylcellulose, hydroxypropylmethylcellulose, hydroxypropylmethylcellulose phthalate, hydroxypropylmethylcellulose acetate succinate, and carmellose sodium , Ethyl cellulose, carboxymethyl ethyl cellulose, hydroxyethyl cellulose, wheat starch, rice starch, corn starch, potato starch, dextrin, pregelatinized starch, partially pregelatinized starch, hydroxypropyl starch, pullulan, polyvinylpyrrolidone, aminoalkyl methacrylate copolymer E, aminoalkyl Metak Rate copolymer RS, methacrylic acid copolymer L, methacrylic acid copolymer, polyvinyl acetal diethylamino acetate, polyvinyl alcohol, gum arabic, gum arabic powder, agar, gelatin, white shellac, tragacanth, purified sucrose, macrogol.
[0018]
Specific examples of disintegrants include crystalline cellulose, methylcellulose, low-substituted hydroxypropylcellulose, carmellose, carmellose calcium, carmellose sodium, croscarmellose sodium, wheat starch, rice starch, corn starch, potato starch, partially pregelatinized. Starch, hydroxypropyl starch, sodium carboxymethyl starch, tragacanth.
[0019]
Specific examples of the surfactant include soy lecithin, sucrose fatty acid ester, polyoxyl stearate, polyoxyethylene hydrogenated castor oil, polyoxyethylene polyoxypropylene glycol, sorbitan sesquioleate, sorbitan trioleate, sorbitan monostearate Sorbitan monopalmitate, sorbitan monolaurate, polysorbate, glycerin monostearate, sodium lauryl sulfate, lauromacrogol.
[0020]
Specific examples of lubricants include wheat starch, rice starch, corn starch, stearic acid, calcium stearate, magnesium stearate, hydrous silicon dioxide, light anhydrous silicic acid, synthetic aluminum silicate, dried aluminum hydroxide gel, talc, Examples include magnesium aluminate metasilicate, calcium hydrogen phosphate, anhydrous calcium hydrogen phosphate, sucrose fatty acid esters, waxes, hydrogenated vegetable oils, and polyethylene glycol.
[0021]
Specific examples of the fluidity promoter include hydrous silicon dioxide, light silicic anhydride, dried aluminum hydroxide gel, synthetic aluminum silicate, and magnesium silicate.
When the type II diabetes preventive / therapeutic agent of the present invention is administered as a liquid, syrup, suspension, emulsion or elixir, it may contain a flavoring agent and a coloring agent.
[0022]
In addition, a so-called food for specified health use (for example, a food for preventing or treating type II diabetes mellitus) or the like can also be produced by adding the black millet protein concentrate of the present invention to foods and drinks.
The black millet used in the present invention has been used for food and feed to date, its safety has been established, and there is no risk of side effects even in long-term use.
[0023]
【Example】
Hereinafter, the present invention will be described more specifically with reference to Examples, but the scope of the present invention is not limited to these Examples.
[0024]
Example 1 Preparation of Black Millet Protein Concentrate Using 10 kg of black millet powder obtained by threshing and powdering black millet obtained from Tohoku Agricultural Research Center, National Agricultural Technology Research Institute, the black millet protein content was 20%. % Feed was made.
[0025]
First, 4 liters of distilled water was added to the black millet powder per 400 g of black millet powder, and heated at 90 ° C. for 1 hour to gelatinize. After the temperature of the gelatinized black millet powder dropped to 60 ° C., it was confirmed that the pH was 7.0, 1.4 ml of glucoamylase and 340 mg of α-amylase were added, and the enzyme reaction was carried out at 60 ° C. for 24 hours. The hydrolysis was performed to hydrolyze the amylose portion of the black millet. When the reaction product was centrifuged at 4,000 rpm for 8 minutes using H-9R manufactured by KOKUSAN, a precipitate was formed. All the precipitates were collected, freeze-dried, and then the freeze-dried product was degreased with hexane. After repeating this operation five times, the freeze-dried product was air-dried to obtain a black millet protein concentrate.
[0026]
The composition of this black millet protein concentrate has a water content of 8.0, a protein content of 58.0, a carbohydrate of 29.8, an ash content of 1.1, a lipid of 3.1 and a dietary fiber of 10.2 (insoluble dietary fiber of 10.2) per 100 g. )% And the energy was 379 kcal.
[0027]
Example 2 Amino Acid Composition of Black Millet Protein Concentrate The amino acid composition of the black millet protein concentrate obtained in Example 1 was as shown in Table 1.
[0028]
As a characteristic of the black millet protein concentrate of the present invention, the ratio of glutamic acid, alanine and leucine in the amino acid composition is high, and the ratio of lysine and threonine is low. Moreover, when compared with the amino acid composition of the conventional barnyard millet described in Patent Literature 1, the black millet protein concentrate of the present invention has a higher ratio of tyrosine and tryptophan than the barnyard millet of Patent Literature 1, arginine, lysine, It is clear that the proportions of glycine and proline are low, and that the amino acid compositions of both are different.
[0029]
[Table 1]
Figure 2004331589
[0030]
(Example 3) Preparation of feed for animal experiment Using the concentrate of black millet protein obtained in Example 1, a feed of a concentrate of black millet protein for animal experiment having the following composition was prepared (g / 100g). : Black millet protein concentrate 29.2, salt 3.5, vitamin 1.0, oil 6.1, choline bitartrate 0.2, cellulose powder 2, α-corn starch 46, L-lysine hydrochloride 1. 73, L-threonine 0.2, sucrose 10.
[0031]
As a control, a casein feed was prepared having the same composition as above except that it contained 20% casein as a protein, did not contain L-lysine hydrochloride and L-threonine, and added 0.3% L-cystine.
[0032]
Example 4 Experiment on Improvement of Lipid Metabolism and Type II Diabetes by Intake of Black Millet Protein Concentrate Black concentrate of black millet protein prepared in Example 3 was administered to a GK male rat (7 weeks old) which is a type II diabetes model rat. The animals were allowed to freely ingest food feed and were bred for 20 days. As a control group, the same type II diabetes model rat, a GK male rat (7 weeks old), was allowed to freely ingest the casein diet prepared in Example 3 and bred for 20 days.
On the last day of breeding, rats in each group were fasted for 5 hours, and then approximately 5 ml of blood was collected from the abdominal vena cava. In addition, the liver and testicular adipose tissue were immediately removed.
[0033]
Using these samples, measurement of liver weight, testicular adipose tissue weight, blood glucose in plasma, triglyceride, total cholesterol concentration, HDL-cholesterol, LDL-VLDL-cholesterol, insulin and adiponectin, hepatic cholesterol And the measurement of neutral fat concentration, and the measurement of glycated hemoglobin in blood.
The results are shown in Table 2 together with the weight and feed intake of the rats in each group. An asterisk (*) was given to a sample showing a significant difference between each group.
[0034]
[Table 2]
Figure 2004331589
[0035]
As shown in Table 2, there was no significant difference in body weight and feed intake on the last day of breeding in each group. Testicular adipose tissue weight was significantly reduced (p <0.01) in the group that took the black millet protein concentrate. Regarding the plasma lipid concentration, HDL-cholesterol significantly increased in the group that took the black millet protein concentrate (p <0.05). Insulin concentration was not significantly different between the groups, but blood glucose levels were significantly reduced in the group that took the black millet protein concentrate (p <0.05). Furthermore, adiponectin levels were significantly increased in the group that took the black millet protein concentrate (p <0.05). The glycated hemoglobin concentration in the blood did not differ significantly between the groups. There was no significant difference in the liver lipid concentration between the two groups.
[0036]
That is, in the group that took the black millet protein concentrate, testicular adipose tissue weight decreased, plasma HDL-cholesterol level increased, blood glucose level decreased and adiponectin increased, and lipid metabolism was improved. Was.
[0037]
From the above results, it was revealed that the black millet protein concentrate has a function of improving lipid metabolism and type II diabetes, and thus can prevent and treat type II diabetes.
[0038]
(Example 5) Production of black millet bread Bread containing black millet protein concentrate was manufactured. The composition of the ingredients is as follows (g): flour 90, black millet 10, raw yeast 2.2, tri-sweet sugar 7, Teshio 1.6, water 65. After mixing these, they were fermented and roasted. The shape was a chevron. This black fly pan could be stored frozen.
[0039]
【The invention's effect】
INDUSTRIAL APPLICABILITY As described above, the protein of the present invention or a processed product thereof improves lipid metabolism such as a decrease in testicular adipose tissue weight, an increase in plasma HDL-cholesterol concentration, a decrease in blood glucose level and an increase in adiponectin. It has a function and can prevent and treat type II diabetes. In particular, elevation of adiponectin is a function that has not been confirmed in previous studies on barnyard millet.
[0040]
In addition, the protein or its processed product derived from black millet of the present invention uses black millet used for food and feed, and there is no risk of side effects even in long-term use.
The protein of the present invention derived from black barn or a processed product thereof can be widely applied to foods, pharmaceuticals and the like.

Claims (5)

黒ヒエ由来で脂質代謝を改善させる活性を示すタンパク質又はその処理物。A protein or a processed product thereof, which is derived from black barn and has an activity of improving lipid metabolism. II型糖尿病の予防・治療に用いる請求項1記載のタンパク質又はその処理物。The protein or its processed product according to claim 1, which is used for prevention and treatment of type II diabetes. 請求項1又は2記載のタンパク質又はその処理物を添加してなる食品。A food comprising the protein according to claim 1 or 2 or a processed product thereof. 黒ヒエ由来のタンパク質又はその処理物を有効成分として含有するII型糖尿病予防・治療薬。A preventive / therapeutic agent for type II diabetes, which comprises a protein derived from black millet or a processed product thereof as an active ingredient. 食品に添加するための、請求項4記載のII型糖尿病予防・治療薬。The preventive / therapeutic agent for type II diabetes according to claim 4, which is added to a food.
JP2003130526A 2003-05-08 2003-05-08 Protein or treated product thereof, exhibiting activity for ameliorating lipid metabolism and derived from echinochloa utilis kurohie Pending JP2004331589A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006070873A1 (en) * 2004-12-28 2006-07-06 Ajinomoto Co., Inc. Adiponectin inducer or secretagogue
KR101222779B1 (en) * 2010-07-29 2013-01-15 경북대학교 산학협력단 A composition comprising the extract of Barnyardgrass as an active ingredient for preventing and treating inflammatory disease

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006070873A1 (en) * 2004-12-28 2006-07-06 Ajinomoto Co., Inc. Adiponectin inducer or secretagogue
KR101222779B1 (en) * 2010-07-29 2013-01-15 경북대학교 산학협력단 A composition comprising the extract of Barnyardgrass as an active ingredient for preventing and treating inflammatory disease

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