JP3677007B2 - Anti-diabetic ingredient-containing food composition - Google Patents

Anti-diabetic ingredient-containing food composition Download PDF

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Publication number
JP3677007B2
JP3677007B2 JP2002067792A JP2002067792A JP3677007B2 JP 3677007 B2 JP3677007 B2 JP 3677007B2 JP 2002067792 A JP2002067792 A JP 2002067792A JP 2002067792 A JP2002067792 A JP 2002067792A JP 3677007 B2 JP3677007 B2 JP 3677007B2
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Prior art keywords
sweet potato
diabetic
blood glucose
insulin
food composition
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JP2002330726A (en
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篤典 岡田
崇一 草野
浩之 阿部
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Fuji Sangyo Co Ltd
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Fuji Sangyo Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、糖尿病患者等に有効な、インスリン分泌促進作用及び耐糖能改善作用を有する抗糖尿病成分含有食品組成物に関する。
【0002】
【従来の技術】
現在、糖尿病患者は600万人とも言われ、その病状はインスリン依存性(IDDM)糖尿病とインスリン非依存性(NIDDM)糖尿病とに分けられるが、殆どはインスリン非依存性(NIDDM)糖尿病患者であり、食物療法と運動療法を基礎とした上に薬物療法が行なわれている。
これらインスリン非依存性(NIDDM)糖尿病患者において、食事療法と運動療法で効果が得られない場合に使用される糖尿病治療薬としては、1956年に開発されたトルブタミドを初めとするスルホニル尿素剤(SU剤)、スルフォンアミド剤、ビグアナイド剤(BG剤)に大別され、現在ではスルホニル尿素剤(SU剤)が最も多く使用されている。
【0003】
しかしながら、スルホニル尿素剤(SU剤)には、低血糖や皮疹、下痢、悪心、肝機能障害などの副作用も見られる。
また、ビグアナイド剤(BG剤)は単独では確実な効果が得られず、消化器症状が強く出る可能性があり、これにより代謝異常の副作用が起こることもある。糖尿病治療薬は、一般的に適応と使用法に留意しなければならず、軽度の糖尿病患者にとっては負担が大きい。
【0004】
一方、インスリン依存性糖尿病(IDDM)の場合は、インスリン投与を行なうが、毎日決まった時間に投与し、また、自己注射の指導も行なわないといけないため、患者にもインスリン治療法の知識と技術について充分な知識が必要となる。
【0005】
このように食事療法や運動療法、薬物療法、インスリン療法のいずれにおいても、自宅で自己管理のもとに行なうのは難しく、有効な治療効果が得られにくいため、副作用のない、糖尿病をうまく制御する方法の開発が待たれている。
【0006】
【発明が解決しようとする課題】
本発明者は、上述のような現状に基づいて、副作用のない、糖尿病をうまく制御する方法を開発すべく鋭意研究を重ねた結果、白甘薯( Ipomoea Batatas sp.)が、インスリン分泌促進作用及び耐糖能改善作用をはじめとする抗糖尿病作用を有することを見出した。さらに、白甘薯( Ipomoea Batatas sp.)は、血糖値を正常値以下には下げないことから、低血糖等の心配も全くなく、安全性が非常に高いものであることを知見し、これらの知見に基づいて本発明を完成するに至った。
本発明は、安全で、しかも容易に摂取しうる抗糖尿病作用を有する食品組成物を提供することを目的とするものである。
【0007】
【課題を解決するための手段】
すなわち請求項1記載の本発明は、白甘薯( Ipomoea Batatas sp.)の塊根の皮部分 から破砕・搾汁により抽出して得られる、インスリン分泌促進作用及び耐糖能改善作用を示す抗糖尿病成分含有食品組成物を提供するものである。
【0008】
【発明の実施の形態】
ここで白甘薯( Ipomoea Batatas sp.)は、さつま芋(ヒルガオ科の草本 Ipomoea Batatas Poiret 及びその塊根)の一種であり、まだ知られてはいないが、インスリン分泌を促進する成分及び耐糖能改善作用を有する成分や、糖尿病の合併症である高脂血症を抑える成分が含まれており、ビタミンKや葉緑素、葉酸(ヤラピン酸)などを含んでいる。
【0009】
請求項1記載の本発明の食品組成物は、上記したような白甘薯( Ipomoea Batatas sp.)の塊根の皮部分から破砕・搾汁により抽出して得られるものである。
【0010】
このような請求項1記載の本発明の食品組成物は、例えば以下の方法により製造することができる。
すなわち、白甘薯( Ipomoea Batatas sp.)の塊根の皮部分を、ジューサー等にかけて破砕・搾汁し、そこで得られた抽出成分を乾燥する方法である。
換言すれば、白甘薯 Ipomoea Batatas sp.)の塊根の皮部分を、ジューサー等にかけて破砕・搾汁し、そこで得られた抽出成分を乾燥することにより、請求項1記載の本発明の食品組成物を得ることができる。
【0011】
より詳しく述べると、例えば白甘薯( Ipomoea Batatas sp.)の塊根をよく洗浄した後、皮剥き器(ピーラー)などで皮を剥き、その皮部分のみをジューサー、ミキサー等にかけて破砕、搾汁し、さらに遠心沈澱法、濾過法などにより不溶物を取り除いた後、凍結乾燥或いはスプレードライ等により乾燥させて、目的とする食品組成物を粉末の形で得ることができる。
【0012】
このような本発明の食品組成物は、必要に応じて適当な賦形剤(例えば、セルロース、第三リン酸カルシウム、デキストリン、乳糖等)やビタミン剤、安定剤、防腐剤、着色料、香料等を加えることもできる。
【0013】
本発明の食品組成物は、錠剤、液剤、カプセル剤、顆粒剤、散剤等の形で用いることができる。
また、本発明の食品組成物は、そのままで食することができると共に、食品中に食品素材として加えることもできる。さらに、本発明の食品組成物は、通常の糖尿病患者の食事療法における食事の中に併せて用いることもできる。
本発明の食品組成物の使用量は特に制限はないが、通常、一日当たり0.1〜30gであり、好ましくは0.5〜10gである。
【0014】
本発明の食品組成物は、 Wister 系ラット及び糖尿病患者を用いて、その有効性を確認した。後記実施例からも分かるように、インスリン分泌作用は対照と比較して、1.5〜3倍に増加し、また、耐糖能改善作用においても対照と比較して、15〜20%の血糖値の低下が見られた。また、白甘薯投与により、血糖値を正常値以下に下げることはなく、低血糖等の副作用は現れないことも分かった。さらに、糖尿病患者に投与したとき、10日後で空腹時血糖値を有意に低下させることを確認した。
【0015】
【実施例】
次に、本発明を実施例により詳しく説明するが、本発明の範囲はこれら実施例によって制限されるものではない。
【0016】
製造例1(白甘薯の塊根・抽出)
白甘薯30kgを水で良く洗い、汚れを落とした後、皮を剥かずにそのままジューサーにかけ、布巾で漉して溶液12リットルを得、30分間遠心分離を行ない、上澄液をメンブランフィルターで濾過した。その後、凍結乾燥機で粉末として、白甘薯抗糖尿病成分含有組成物の粉末(目的とする食品組成物)約700gを得た。
【0017】
製造例2(白甘薯の皮部分・抽出;本発明
白甘薯3kgを水で良く洗い、汚れを落とした後、ピーラーを用いて、皮部分280gを得た。これに水を800ml加えてジューサーにかけ、布巾で漉して溶液900mlを得、30分間遠心分離を行ない、上澄液をメンブランフィルターで濾過した。その後、凍結乾燥機で粉末として、白甘薯抗糖尿病成分含有組成物の粉末(目的とする食品組成物)約10gを得た。
【0018】
製造例3(白甘薯の塊根・抽出・凍結乾燥)
白甘薯300kgを水で良く洗い、汚れを落とした後、皮を剥かずにそのままのものに水200リットルを加え、ミキサーで破砕し、脱水式遠心分離機で搾汁した。得られた搾汁を超遠心分離機にかけた後、上澄液を減圧濃縮し、この濃縮液について凍結乾燥機で乾燥粉末として、白甘薯抗糖尿病成分含有組成物の粉末(目的とする食品組成物)約7kgを得た。
【0019】
製造例4(白甘薯の塊根・抽出・スプレードライ)
白甘薯300kgを水で良く洗い、汚れを落とした後、皮を剥かずにそのままのものに水200リットルを加え、ミキサーで破砕し、スクリュープレスで搾汁した。得られた搾汁をセラミック膜濾過機で濾過した後、減圧濃縮し、この濃縮液を入口温度160℃、出口温度60℃でスプレードライを行ない、白甘薯抗糖尿病成分含有組成物の粉末(目的とする食品組成物)約7kgを得た。
【0020】
実験例1( Wister 系ラットへの白甘薯抗糖尿病成分含有組成物粉末の投与試験1=インスリン分泌促進作用の確認)
7週齢の Wister 系雄性ラット6匹を用い、これに製造例1で得られた白甘薯抗糖尿病成分含有組成物粉末を500mg/kg・日の割合で、経口投与にて10日間投与した後、尾静脈より採血し、血糖値と血清インスリン値を測定した。結果を第1表に示す。なお、対照として、無投与群について血糖値と血清インスリン値を測定した結果を併せて示した。
【0021】
【表1】
第1表

Figure 0003677007
注:Mean ± SD,** P < 0.01 ( vs control )
【0022】
第1表より、製造例1で得られた白甘薯抗糖尿病成分含有組成物粉末10日間投与群は、無投与群と比較して、血糖値に変化はなかったが、インスリン値がP<0.01で有意に増加していた。このことから、白甘薯に含まれる抗糖尿病成分は正常ラットの血糖値には殆ど影響を与えないが、インスリン分泌を促進させる作用を有すると考えられる。
【0023】
実験例2( Wister 系ラットへの白甘薯抗糖尿病成分含有組成物粉末の投与試験2=インスリン分泌促進作用及び耐糖能改善作用の確認)
7週齢の Wister 系雄性ラット9匹を用い、これに製造例1で得られた白甘薯抗糖尿病成分含有組成物粉末を500mg/kg・日の割合で、経口投与にて、10日間投与した後、尾静脈より採血し、血糖値と血清インスリン値を測定した(糖負荷前)。結果を第2表に示す。なお、対照として、無投与群についても血糖値と血清インスリン値を測定した結果を併せて示した。さらに、その2日後、グルコースを1.5g/kgの割合で経口投与して、経時的に血液中のグルコース(血糖値)とインスリン値を測定した(糖負荷後)。結果を、それぞれ第3表と第4表、並びに図1と図2に示す。なお、対照として、無投与群について経時的に血液中のグルコース(血糖値)とインスリン値を測定した結果を併せて示した。
【0024】
【表2】
第2表(糖負荷前)
Figure 0003677007
注:Mean ± SD,** P < 0.01 ( vs control )
【0025】
【表3】
第3表(糖負荷後)
Figure 0003677007
注:Mean ± SD,** P < 0.01 ( vs control )
【0026】
【表4】
第4表(糖負荷後)
Figure 0003677007
注:Mean ± SD,** P < 0.01 ( vs control )
【0027】
実験例1での試験と同様に、正常ラットに対して、白甘薯抗糖尿病成分含有組成物粉末投与群では、無投与群と比較して、血糖値に変化はなかったが、インスリン値がP<0.01で有意に増加した。また、耐糖能試験では、第3,4表と図1,2に示したように、無投与群と比較して、血糖値が糖負荷60分以後でP<0.01で有意に低下し、さらにインスリン値は、糖負荷前及び糖負荷以後においてP<0.01で有意に増加していた。これらの結果より、白甘薯に含まれる抗糖尿病成分は正常ラットの血糖値には影響を与えないが、インスリン分泌を促進し、糖負荷時には血糖値の上昇を抑える作用を有すると考えられる。
【0028】
実験例3( Wister 系ラットへの白甘薯抗糖尿病成分含有組成物粉末の投与試験3=皮部分のインスリン分泌促進作用及び耐糖能改善作用の確認)
7週齢の Wister 系雄性ラット6匹を用い、これに製造例1で得られた白甘薯抗糖尿病成分含有組成物粉末(塊根)を500mg/kg・日の割合で、及び製造例2(本発明)で得られた白甘薯抗糖尿病成分含有組成物粉末(皮部分)を50mg/kg・日の割合で、それぞれ経口投与にて10日間投与した後、尾静脈より採血し、血糖値と血清インスリン値を測定した(糖負荷前)。結果を第5表に示す。なお、対照として、無投与群についても血糖値と血清インスリン値を測定した結果を併せて示した。さらに、その3日後、グルコースを1.5g/kgの割合で経口投与して、経時的に血液中のグルコース(血糖値)とインスリン値を測定した(糖負荷後)。結果を、それぞれ第6表と第7表並びに図3と図4に示す。なお、対照として、無投与群について経時的に血液中のグルコース(血糖値)とインスリン値を測定した結果を併せて示した。
【0029】
【表5】
第5表(糖負荷前)
Figure 0003677007
注: Mean ± SD,** P < 0.01 ( vs control )
【0030】
【表6】
第6表(糖負荷後)
Figure 0003677007
注: Mean ± SD, **P < 0.01 ( vs control )
【0031】
【表7】
第7表(糖負荷後)
Figure 0003677007
注: Mean ± SD,** P < 0.01 ( vs control )
【0032】
第5表、及び第6,7表と図3,4より、白甘薯皮部分の50mg/kg・日の投与量で、塊根部分500mg/kg・日投与に匹敵するインスリン分泌促進、耐糖能改善作用があり、白甘薯抗糖尿病作用物質は、皮部分に高濃度で存在すると考えられる。
【0033】
実験例4( Wister 系ラットへの白甘薯抗糖尿病成分含有組成物粉末の投与試験4=スプレードライにより乾燥したもの)
7週齢の Wister 系雄性ラット6匹を用い、これに製造例4で得られた白甘薯抗糖尿病成分含有組成物粉末を500mg/kg・日の割合で、経口投与にて14日間投与した後、尾静脈より採血し、血糖値と血清インスリン値を測定した。結果を第8表に示す。なお、対照として、無投与群について血糖値と血清インスリン値を測定した結果を併せて示した。さらに、その3日後、グルコースを1.5g/kgの割合で経口投与して、経時的に血液中のグルコース(血糖値)とインスリン値を測定した(糖負荷後)。結果を、それぞれ第9表と第10表並びに図5と図6に示す。なお、対照として、無投与群について経時的に血液中のグルコース(血糖値)とインスリン値を測定した結果を併せて示した。
【0034】
【表8】
第8表(糖負荷前)
Figure 0003677007
注: Mean ± SD,** P < 0.01 ( vs control )
【0035】
【表9】
第9表(糖負荷後)
Figure 0003677007
注: Mean ± SD,** P < 0.01 ( vs control )
【0036】
【表10】
第10表(糖負荷後)
Figure 0003677007
注: Mean ± SD,**P < 0.01 ( vs control )
【0037】
第8表、及び第9,10表と図5,6より、白甘薯抗糖尿病成分は、スプレードライによる乾燥においても、その活性を殆ど維持することを確認した。
【0038】
実験例5( Wister 系ラットへの白甘薯抗糖尿病成分含有組成物粉末の投与試験5=さつま芋粉末の投与試験の実施)
7週齢の Wister 系雄性ラット6匹を用い、これに製造例1で得られた白甘薯抗糖尿病成分含有組成物粉末、及びさつま芋を用いたこと以外は製造例1と同様にして得られたさつま芋( Ipomoea Batatas (L.) Lam. ( CVS. Narutokintoki )抽出エキス粉末(比較例)を、それぞれ500mg/kg・日の割合で、経口投与にて10日間投与した後、尾静脈より採血し、血糖値と血清インスリン値を測定した。結果を第11表に示す。なお、対照として、無投与群について血糖値と血清インスリン値を測定した結果を併せて示した。さらに、その2日後、グルコースを1.5g/kgの割合で経口投与して、経時的に血液中のグルコース(血糖値)とインスリン値を測定した(糖負荷後)。結果を、それぞれ第12表と第13表並びに図7と図8に示す。なお、対照として、無投与群について経時的に血液中のグルコース(血糖値)とインスリン値を測定した結果を併せて示した。
【0039】
【表11】
第11表(糖負荷前)
Figure 0003677007
注: Mean ± SD,** P < 0.01 ( vs control )
【0040】
【表12】
第12表(糖負荷後)
Figure 0003677007
注: Mean ± SD,** P < 0.01 ( vs control )
【0041】
【表13】
第13表(糖負荷後)
Figure 0003677007
注: Mean ± SD,** P < 0.01 ( vs control )
【0042】
第11表、及び第12,13表と図7,8に示したように、白甘薯芋の同属植物であるサツマ芋には、白甘薯で見られるようなインスリン分泌促進及び耐糖能改善作用は認められなかった。
【0043】
実験例6(ヒトに対する白甘薯抗糖尿病成分含有組成物粉末の投与試験)
インスリン非依存性糖尿病でトルブタミド〔スルホニル尿素剤(SU剤)〕の内服治療を行なっている糖尿病患者10名を対象に、白甘薯抗糖尿病成分含有組成物粉末の投与試験を行なった。試験方法は、トルブタミド〔スルホニル尿素剤(SU剤)〕の内服を中止させ、代わりに製造例1で得られた白甘薯抗糖尿病成分含有組成物粉末を1日1回3g、10日間連続して内服させた。内服開始前と終了時に、空腹時血糖を測定して、白甘薯抗糖尿病成分含有組成物粉末の有効性を評価した。
その結果、試験開始前に患者10名で 130〜 182 mg/dlあった空腹時血糖値は、試験終了時では 83 〜 143 mg/dlに全員が下がった。また、身体の倦怠感、疲れ易さ等も8名がかなり解消され、白甘薯抗糖尿病成分含有組成物粉末のヒトの糖尿病に対する有効性が確認された。
【0044】
【発明の効果】
本発明の抗糖尿病成分含有食品組成物は、抗糖尿病作用を有するものである。すなわち、本発明の抗糖尿病成分含有食品組成物は、優れたインスリン分泌促進作用を有するものであり、しかも糖負荷試験後の血糖値の上昇を抑えることができ、優れた耐糖能改善作用を有するものである。
次に、本発明の抗糖尿病成分含有食品組成物は、血糖値を正常値以下に下げることがなく、低血糖等の副作用が起こらないので、服用方法が限定されない。また、糖尿病の合併症である高脂血症の改善効果も認められた。
さらに、本発明の抗糖尿病成分含有食品組成物は、天然に産生する白甘薯の塊根、特にその皮部分から高濃度に得ることができる。
従って、本発明の抗糖尿病成分含有食品組成物は、インスリン分泌促進作用及び耐糖能改善作用を有する食品組成物として、安全で、しかも容易に摂取することができ、糖尿病患者やその予備軍等に有効に用いることができる。
【0045】
次に、本発明の各種態様を示すと、以下の通りである。
(1).白甘薯( Ipomoea Batatas sp.)の塊根の皮部分から抽出して得られる、インスリン分泌促進作用及び耐糖能改善作用を示す抗糖尿病成分含有食品組成物。
【0046】
(2).賦形剤を加えてなる前記(1)記載の食品組成物。
【0047】
(3).白甘薯( Ipomoea Batatas sp.)の塊根の皮部分をジューサー等にかけて破砕・搾汁して得られた抽出成分を乾燥して得られる、前記(1)記載の食品組成物。
【0048】
(4).錠剤、液剤、カプセル剤、顆粒剤、或いは散剤である、前記(1)記載の食品組成物。
【0049】
(5).白甘薯( Ipomoea Batatas sp.)の塊根の皮部分から抽出して得られる、インスリン分泌促進作用及び耐糖能改善作用を示す抗糖尿病成分含有食品素材。
【図面の簡単な説明】
【図1】 図1は、実験例2における糖負荷後のグルコース(血糖値)の経時変化を示すグラフである。
【図2】 図2は、実験例2における糖負荷後のインシュリン濃度の経時変化を示すグラフである。
【図3】 図3は、実験例3における糖負荷後のグルコース(血糖値)の経時変化を示すグラフである。
【図4】 図4は、実験例3における糖負荷後のインシュリン濃度の経時変化を示すグラフである。
【図5】 図5は、実験例4における糖負荷後のグルコース(血糖値)の経時変化を示すグラフである。
【図6】 図6は、実験例4における糖負荷後のインシュリン濃度の経時変化を示すグラフである。
【図7】 図7は、実験例5における糖負荷後のグルコース(血糖値)の経時変化を示すグラフである。
【図8】 図8は、実験例5における糖負荷後のインシュリン濃度の経時変化を示すグラフである。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a food composition containing an anti-diabetic ingredient having an action of promoting insulin secretion and improving glucose tolerance, which is effective for diabetic patients and the like.
[0002]
[Prior art]
Currently, it is said that there are 6 million diabetic patients, and the condition is divided into insulin-dependent (IDDM) diabetes and non-insulin-dependent (NIDDM) diabetes, but most are non-insulin-dependent (NIDDM) diabetics. Drug therapy is performed on the basis of food therapy and exercise therapy.
In these non-insulin dependent (NIDDM) diabetic patients, as therapeutic agents for diabetes used when dietary therapy and exercise therapy are not effective, sulfonylureas such as tolbutamide developed in 1956 (SU Agent), sulfonamide agent, biguanide agent (BG agent), and sulfonylurea agent (SU agent) is most frequently used at present.
[0003]
However, side effects such as hypoglycemia, skin rash, diarrhea, nausea and liver dysfunction are also seen in sulfonylurea (SU agent).
In addition, a biguanide agent (BG agent) alone does not provide a reliable effect, and gastrointestinal symptoms may occur strongly, which may cause a metabolic side effect. Antidiabetic drugs generally require attention to indications and usage, which is a burden for mildly diabetic patients.
[0004]
On the other hand, in the case of insulin-dependent diabetes mellitus (IDDM), insulin is administered, but it must be administered at a fixed time every day and guidance on self-injection must be given. Sufficient knowledge about is required.
[0005]
In this way, dietary therapy, exercise therapy, pharmacotherapy, and insulin therapy are difficult to perform under self-management at home and effective treatment effects are difficult to obtain, so there is no side effect and diabetes is well controlled. The development of the method to do is awaited.
[0006]
[Problems to be solved by the invention]
Based on the above situation, the present inventor has conducted extensive research to develop a method for successfully controlling diabetes without side effects. As a result, white sweet potato ( Ipomoea Batatas sp.) It has been found that it has an anti-diabetic action including an action to improve glucose tolerance. Furthermore, white sweet potato ( Ipomoea Batatas sp.) Does not lower the blood glucose level below normal level, so it has been found that there is no concern about hypoglycemia and the safety is very high. The present invention has been completed based on the findings.
An object of the present invention is to provide a food composition having an antidiabetic action that is safe and can be taken easily.
[0007]
[Means for Solving the Problems]
That is, the present invention according to claim 1 contains an anti-diabetic ingredient having an action of promoting insulin secretion and an action of improving glucose tolerance, which is obtained by crushing and squeezing from the skin part of tuberous root of Ipomoea Batatas sp. A food composition is provided.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Here, white sweet potato ( Ipomoea Batatas sp.) Is a kind of sweet potato ( Ipomoea Batatas Poiret and its tuberous root), which is not yet known, but has a component that promotes insulin secretion and an action to improve glucose tolerance. And components that suppress hyperlipidemia, which is a complication of diabetes, and contain vitamin K, chlorophyll, folic acid (yarapic acid), and the like.
[0009]
The food composition of the present invention according to claim 1 is obtained by crushing and squeezing from the skin portion of the tuberous root of Ipomoea Batatas sp.
[0010]
Such a food composition of the present invention according to claim 1 can be produced, for example, by the following method.
That is, it is a method of crushing and squeezing the skin of the tuberous root of white sweet potato ( Ipomoea Batatas sp.) Using a juicer or the like, and drying the extracted components obtained there.
In other words, the food composition of the present invention according to claim 1 is obtained by crushing and squeezing the root of the tuberous root of white sweet potato ( Ipomoea Batatas sp.) With a juicer or the like, and drying the extracted component obtained there. You can get things.
[0011]
More specifically, for example , after thoroughly washing the tuberous root of white sweet potato ( Ipomoea Batatas sp.), Peel the skin with a peeler, etc., crush and squeeze only the skin part with a juicer, mixer, etc. Furthermore, after removing insoluble matters by centrifugal precipitation method, filtration method or the like, the desired food composition can be obtained in the form of powder by drying by freeze drying or spray drying.
[0012]
Such a food composition of the present invention contains appropriate excipients (for example, cellulose, tricalcium phosphate, dextrin, lactose, etc.), vitamins, stabilizers, preservatives, coloring agents, flavors and the like as necessary. It can also be added.
[0013]
The food composition of the present invention can be used in the form of tablets, liquids, capsules, granules, powders and the like.
In addition, the food composition of the present invention can be eaten as it is, and can also be added to food as a food material. Furthermore, the food composition of the present invention can also be used in a meal in a normal diabetic diet.
Although the usage-amount of the food composition of this invention does not have a restriction | limiting in particular, Usually, it is 0.1-30g per day, Preferably it is 0.5-10g.
[0014]
The effectiveness of the food composition of the present invention was confirmed using Wister rats and diabetic patients. As can be seen from the examples described later, the insulin secretion action increases 1.5 to 3 times compared to the control, and the glucose tolerance improving action also exhibits a blood glucose level of 15 to 20% compared to the control. Decrease was observed. It was also found that administration of white sweet potato did not lower the blood glucose level below the normal level, and side effects such as hypoglycemia did not appear. Furthermore, when administered to a diabetic patient, it was confirmed that the fasting blood glucose level was significantly reduced after 10 days.
[0015]
【Example】
EXAMPLES Next, although an Example demonstrates this invention in detail, the scope of the present invention is not restrict | limited by these Examples.
[0016]
Production Example 1 (White sweet potato tuberous root extraction)
Wash 30 kg of white sweet potato with water, remove the dirt, apply it to the juicer without peeling it off, strain with a cloth to obtain 12 liters of solution, centrifuge for 30 minutes, and filter the supernatant with a membrane filter . Thereafter, about 700 g of white sweet potato anti-diabetic component-containing composition powder (target food composition) was obtained as a powder by a freeze dryer.
[0017]
Production Example 2 (White sweet potato peel / extraction ; the present invention )
After washing 3 kg of white sweet potato with water and removing dirt, 280 g of skin part was obtained using a peeler. 800 ml of water was added to this, and it was put on a juicer, strained with a cloth to obtain 900 ml of solution, centrifuged for 30 minutes, and the supernatant was filtered through a membrane filter. Then, about 10 g of powder (target food composition) of a white sweet potato anti-diabetic component-containing composition was obtained as a powder by a freeze dryer.
[0018]
Production Example 3 (White sweet potato tuber root, extraction, freeze-drying)
After thoroughly washing 300 kg of white sweet potato with water and removing the dirt, 200 liters of water was added as it was without peeling the skin, and the mixture was crushed with a mixer and squeezed with a dehydrating centrifuge. After the obtained juice is applied to an ultracentrifuge, the supernatant is concentrated under reduced pressure, and the concentrated liquid is dried as a dry powder in a freeze dryer (powder of white sweet potato anti-diabetic component-containing composition (target food composition) Thing) About 7 kg was obtained.
[0019]
Production Example 4 (White sweet potato tuber, extraction, spray drying)
After thoroughly washing 300 kg of white sweet potato with water and removing the dirt, 200 liters of water was added to the product as it was without peeling the skin, and the mixture was crushed with a mixer and squeezed with a screw press. The obtained juice is filtered through a ceramic membrane filter and then concentrated under reduced pressure. The concentrate is spray dried at an inlet temperature of 160 ° C. and an outlet temperature of 60 ° C. to obtain a powder of white sweet potato anti-diabetic component-containing composition (purpose) About 7 kg of food composition was obtained.
[0020]
Experimental example 1 (Administration test of white sweet potato anti-diabetic component-containing composition powder to Wister rats 1 = confirmation of insulin secretion promoting effect)
6 wister male rats of 7 weeks old were used, and the white sweet potato anti-diabetic component-containing composition powder obtained in Production Example 1 was orally administered at a rate of 500 mg / kg · day for 10 days. Blood was collected from the tail vein, and blood glucose level and serum insulin level were measured. The results are shown in Table 1. As a control, the results of measuring the blood glucose level and the serum insulin level for the non-administered group are also shown.
[0021]
[Table 1]
Table 1
Figure 0003677007
Note: Mean ± SD, ** P <0.01 (vs control)
[0022]
From Table 1, the white sweet potato anti-diabetic component-containing composition powder 10 day administration group obtained in Production Example 1 had no change in blood glucose level compared to the non-administration group, but the insulin level was P <0. It was significantly increased at .01. From this, it is considered that the anti-diabetic component contained in white sweet potato has an effect of promoting insulin secretion, although it hardly affects the blood glucose level of normal rats.
[0023]
Experimental Example 2 (Administration test of white sweet potato anti-diabetic ingredient-containing composition powder to Wister rats 2 = confirmation of insulin secretion promoting action and glucose tolerance improving action)
Nine 7-week old Wister male rats were used, and the white sweet potato anti-diabetic component-containing composition powder obtained in Production Example 1 was orally administered at a rate of 500 mg / kg · day for 10 days. Thereafter, blood was collected from the tail vein, and blood glucose level and serum insulin level were measured (before glucose load). The results are shown in Table 2. As a control, the blood glucose level and serum insulin level were also measured for the non-administered group. Two days later, glucose was orally administered at a rate of 1.5 g / kg, and glucose (blood glucose level) and insulin level in blood were measured over time (after glucose load). The results are shown in Tables 3 and 4 and FIGS. 1 and 2, respectively. As a control, the results of measuring blood glucose (blood glucose level) and insulin level over time for the non-administered group are also shown.
[0024]
[Table 2]
Table 2 (before sugar loading)
Figure 0003677007
Note: Mean ± SD, ** P <0.01 (vs control)
[0025]
[Table 3]
Table 3 (after sugar loading)
Figure 0003677007
Note: Mean ± SD, ** P <0.01 (vs control)
[0026]
[Table 4]
Table 4 (after sugar loading)
Figure 0003677007
Note: Mean ± SD, ** P <0.01 (vs control)
[0027]
Similar to the test in Experimental Example 1 , the white blood sugar anti-diabetic component-containing composition powder-administered group had no change in blood glucose level compared with the non-administered group, but the insulin level was P. Significant increase at <0.01. In the glucose tolerance test, as shown in Tables 3 and 4 and FIGS. 1 and 2, the blood glucose level significantly decreased at P <0.01 after 60 minutes of glucose load compared to the non-administration group. Furthermore, the insulin level was significantly increased at P <0.01 before and after the glucose load. From these results, it is considered that the anti-diabetic component contained in white sweet potato does not affect the blood glucose level of normal rats, but promotes insulin secretion and has an action of suppressing an increase in blood glucose level during glucose loading.
[0028]
Experimental Example 3 (Administration test of white sweet potato anti-diabetic component-containing composition powder to Wister rats 3 = confirmation of insulin secretion promoting action and glucose tolerance improving action of skin part)
Using Six Wister male rats of 7 weeks old, this white sweet potato antidiabetic component-containing composition powder obtained in Production Example 1 (tuberous root) at the rate of 500 mg / kg · day, and Preparation 2 (the Inventive white powdered sweet potato anti-diabetic component-containing composition powder (skin part) was administered orally at a rate of 50 mg / kg / day for 10 days, blood was collected from the tail vein, blood glucose level and serum Insulin levels were measured (before glucose load). The results are shown in Table 5. As a control, the blood glucose level and serum insulin level were also measured for the non-administered group. Further, 3 days later, glucose was orally administered at a rate of 1.5 g / kg, and blood glucose (blood glucose level) and insulin level were measured over time (after glucose load). The results are shown in Tables 6 and 7, and FIGS. 3 and 4, respectively. As a control, the results of measuring blood glucose (blood glucose level) and insulin level over time for the non-administered group are also shown.
[0029]
[Table 5]
Table 5 (before sugar loading)
Figure 0003677007
Note: Mean ± SD, ** P <0.01 (vs control)
[0030]
[Table 6]
Table 6 (after sugar loading)
Figure 0003677007
Note: Mean ± SD, ** P <0.01 (vs control)
[0031]
[Table 7]
Table 7 (after sugar loading)
Figure 0003677007
Note: Mean ± SD, ** P <0.01 (vs control)
[0032]
From Table 5 and Tables 6 and 7, and Figures 3 and 4, insulin secretion promotion and glucose tolerance improvement equivalent to administration of tuberous root portion 500 mg / kg · day at dose of 50 mg / kg · day in white sweet potato skin portion It is considered that the white sweet potato anti-diabetic agent is present at a high concentration in the skin part.
[0033]
Experimental Example 4 (Administration test of white sweet potato anti-diabetic component-containing composition powder to Wister rats 4 = dried by spray drying)
After using 6 male Wister rats at 7 weeks of age and orally administering the white sweet potato anti-diabetic component-containing composition powder obtained in Production Example 4 at a rate of 500 mg / kg · day for 14 days Blood was collected from the tail vein, and blood glucose level and serum insulin level were measured. The results are shown in Table 8. As a control, the results of measuring the blood glucose level and the serum insulin level for the non-administered group are also shown. Further, 3 days later, glucose was orally administered at a rate of 1.5 g / kg, and blood glucose (blood glucose level) and insulin level were measured over time (after glucose load). The results are shown in Tables 9 and 10, and FIGS. 5 and 6, respectively. As a control, the results of measuring blood glucose (blood glucose level) and insulin level over time for the non-administered group are also shown.
[0034]
[Table 8]
Table 8 (before sugar loading)
Figure 0003677007
Note: Mean ± SD, ** P <0.01 (vs control)
[0035]
[Table 9]
Table 9 (after sugar loading)
Figure 0003677007
Note: Mean ± SD, ** P <0.01 (vs control)
[0036]
[Table 10]
Table 10 (after sugar loading)
Figure 0003677007
Note: Mean ± SD, ** P <0.01 (vs control)
[0037]
From Tables 8 and 9, 10 and FIGS. 5 and 6, it was confirmed that the white sweet potato anti-diabetic component almost maintained its activity even when dried by spray drying.
[0038]
Experimental Example 5 (Administration test of white sweet potato anti-diabetic component-containing composition powder to Wister rats 5 = Implementation of administration test of sweet potato powder)
Obtained in the same manner as in Production Example 1 except that 6 wister male Wister rats aged 7 weeks were used and the white sweet potato antidiabetic component-containing composition powder obtained in Production Example 1 and sweet potato were used. Satsuma mochi ( Ipomoea Batatas (L.) Lam. (CVS. Narutokintoki) extract powder (comparative example) was administered orally at a rate of 500 mg / kg · day for 10 days, and blood was collected from the tail vein. The blood glucose level and serum insulin level were measured, and the results are shown in Table 11. As a control, the results of measuring the blood glucose level and serum insulin level for the non-administered group were also shown. Was orally administered at a rate of 1.5 g / kg, and blood glucose (blood glucose level) and insulin levels were measured over time (after glucose load), and the results are shown in Tables 12 and 13 and FIG. 7 and Fig. 8. As irradiation was over time also it shows the result of measuring the insulin value glucose (blood sugar) in the blood for no administration group.
[0039]
[Table 11]
Table 11 (before sugar loading)
Figure 0003677007
Note: Mean ± SD, ** P <0.01 (vs control)
[0040]
[Table 12]
Table 12 (after sugar loading)
Figure 0003677007
Note: Mean ± SD, ** P <0.01 (vs control)
[0041]
[Table 13]
Table 13 (after sugar loading)
Figure 0003677007
Note: Mean ± SD, ** P <0.01 (vs control)
[0042]
As shown in Tables 11 and 12 and 13 and FIGS. 7 and 8, Satsuma persimmon, which belongs to white sweet potato, has the effects of promoting insulin secretion and improving glucose tolerance as seen in white sweet potato. I was not able to admit.
[0043]
Experimental Example 6 (Administration test of white sweet potato anti-diabetic component-containing composition powder to human)
An administration test of a white powdered sweet potato anti-diabetic component-containing composition powder was conducted on 10 diabetic patients who were treated with tolbutamide [sulfonylurea (SU)] for non-insulin-dependent diabetes. In the test method, oral administration of tolbutamide [sulfonylurea agent (SU agent)] was discontinued, and instead, the white sweet potato anti-diabetic component-containing composition powder obtained in Production Example 1 was continuously taken for 3 g once a day for 10 days. I took it internally. Before and after the start of oral administration, fasting blood glucose was measured to evaluate the efficacy of the white sweet potato anti-diabetic component-containing composition powder.
As a result, the fasting blood glucose level, which was 130 to 182 mg / dl in 10 patients before the start of the study, decreased to 83 to 143 mg / dl at the end of the study. In addition, body fatigue, ease of fatigue, etc. were considerably resolved in 8 persons, and the effectiveness of white sweet potato anti-diabetic component-containing composition powder for human diabetes was confirmed.
[0044]
【The invention's effect】
The antidiabetic component-containing food composition of the present invention has an antidiabetic action. That is, the anti-diabetic component-containing food composition of the present invention has an excellent insulin secretion promoting action, can suppress an increase in blood glucose level after a glucose tolerance test, and has an excellent glucose tolerance improving action. Is.
Next, the antidiabetic component-containing food composition of the present invention does not lower the blood glucose level to a normal level or lower, and side effects such as hypoglycemia do not occur. Moreover, the improvement effect of the hyperlipidemia which is a complication of diabetes was also recognized.
Furthermore, the anti-diabetic ingredient-containing food composition of the present invention can be obtained at a high concentration from the naturally produced white sweet potato tuberous root, particularly its skin portion.
Therefore, the anti-diabetic ingredient-containing food composition of the present invention is safe and easily ingested as a food composition having an insulin secretion promoting action and a glucose tolerance improving action. It can be used effectively.
[0045]
Next, various aspects of the present invention are as follows.
(1). An anti-diabetic ingredient-containing food composition that exhibits an insulin secretion-promoting action and a glucose tolerance-improving action, which is obtained by extracting from the root of the tuberous root of white sweet potato ( Ipomoea Batatas sp.).
[0046]
(2). The food composition according to (1), wherein an excipient is added.
[0047]
(3). The food composition as described in (1) above, which is obtained by drying an extract component obtained by crushing and squeezing the skin portion of tuberous root of white sweet potato ( Ipomoea Batatas sp.) With a juicer or the like.
[0048]
(4). The food composition according to (1) above, which is a tablet, liquid, capsule, granule, or powder.
[0049]
(5). An anti-diabetic ingredient-containing food material that exhibits an insulin secretion promoting action and a glucose tolerance improving action, obtained by extracting from the root of the tuberous root of white sweet potato ( Ipomoea Batatas sp.).
[Brief description of the drawings]
FIG. 1 is a graph showing changes over time in glucose (blood glucose level) after sugar loading in Experimental Example 2. FIG.
FIG. 2 is a graph showing the change over time in insulin concentration after sugar loading in Experimental Example 2 .
FIG. 3 is a graph showing the change over time in glucose (blood glucose level) after sugar loading in Experimental Example 3 .
FIG. 4 is a graph showing changes over time in insulin concentration after sugar loading in Experimental Example 3 .
FIG. 5 is a graph showing the change over time in glucose (blood glucose level) after sugar loading in Experimental Example 4 .
FIG. 6 is a graph showing changes over time in insulin concentration after sugar loading in Experimental Example 4 .
FIG. 7 is a graph showing changes over time in glucose (blood glucose level) after sugar loading in Experimental Example 5 .
FIG. 8 is a graph showing changes over time in insulin concentration after sugar loading in Experimental Example 5 .

Claims (1)

白甘薯( Ipomoea Batatas sp.)の塊根の皮部分から破砕・搾汁により抽出して得られる、インスリン分泌促進作用及び耐糖能改善作用を示す抗糖尿病成分含有食品組成物。An anti-diabetic ingredient-containing food composition that exhibits an insulin secretion-promoting action and a glucose tolerance-improving action, which is obtained by crushing and squeezing from the root of the tuberous root of white sweet potato ( Ipomoea Batatas sp.).
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WO2011122389A1 (en) 2010-03-31 2011-10-06 日清オイリオグループ株式会社 Oil and fat composition for prevention or treatment of diabetes
WO2012105130A1 (en) 2011-01-31 2012-08-09 日清オイリオグループ株式会社 Fat and oil composition for promoting insulin secretion

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