JP6956503B2 - 血糖値上昇抑制用組成物 - Google Patents
血糖値上昇抑制用組成物 Download PDFInfo
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Description
生の大豆葉20kgを3cm幅程度に裁断し、釜温度200℃の釜炒り加熱により30分間乾燥した後、1cm角程度に裁断し、大豆植物体乾燥物5kgを得た。この大豆植物体乾燥物の水分含量は4.2%であった。大豆植物体乾燥物4gに対して90℃の熱湯500gを投入して5分後、メッシュ濾過にて残渣を除去し、480gの抽出液を得た。上記のようにして得た大豆植物体熱水抽出液を、凍結乾燥機(東京理化器械(株))にて凍結乾燥し、粉末状の大豆植物体抽出物0.92gを得た。
大豆植物体抽出物が血糖値上昇抑制作用を有するか否かを調べる目的で、マウスを用いた動物実験を実施した。
大豆植物体抽出物の血糖値上昇抑制における作用成分を確認する目的で試験を実施した。
上述の大豆植物体熱水抽出物500mgを400mlの蒸留水に溶解し、合成吸着剤Diaion HP20(三菱化学(株))100mlを充填したガラス製カラムに通液した(SV4)。通液後、カラムを400mlの蒸留水で洗浄し(SV4)、非吸着画分を回収した。さらにカラムに400mlの60%EtOHを通液し(SV4)、吸着画分を回収した。回収した画分は減圧乾燥後、凍結乾燥機にて乾燥し、それぞれ422mg(非吸着画分)、65mg(吸着画分)の粉末試料を得た。
総イソフラボン量を高速液体クロマトグラフィー(HPLC)により分析した。分析方法は平成18年8月23日付け食安発第0823001号「大豆イソフラボンを含む特定保健用食品等の取扱いに関する指針について」に従った。詳しくは、島津製作所製ProminenceUFLCにYMC−Pack ODS−AM(5μ)AM−303(250×4.6mmID)を装着し、0.1%酢酸添加15%アセトニトリルおよび0.1%酢酸添加35%アセトニトリルを移動相(グラジエント)として流速1mL毎分、35℃の条件で、UV検出器(254nm)により検出し、アグリコン等量として算出した。また、同様のHPLC分析条件によりケンフェロールを分析した。ケンフェロールの分析では、前処理として塩酸酸性下で加熱することにより全ての配糖体を加水分解しアグリコンであるケンフェロールとして評価した。
大豆植物体抽出物500mg/k(体重)の投与と、それに相当する前述のHP20吸着画分(422mg/kg(体重))、HP20非吸着画分(65mg/kg(体重))、D−ピニトール(40.5mg/kg(体重))をそれぞれ投与し、試験例1と同様に血糖値上昇抑制作用確認試験を行った。
Claims (3)
- 大豆植物体の水抽出物をスチレン系合成吸着剤処理により分画された非吸着画分を有効成分とする血糖値上昇抑制用組成物。
- 前記大豆植物体が、葉部、茎部、または莢部の少なくともいずれかの部位を含む請求項1記載の血糖値上昇抑制用組成物。
- 大豆植物体を切断する工程と、加熱乾燥する工程と、水抽出する工程と、スチレン系合成吸着剤処理して非吸着画分を分画する工程を順に含むことを特徴とする血糖値上昇抑制用組成物の製造方法。
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| JP2017072983A JP6956503B2 (ja) | 2017-03-31 | 2017-03-31 | 血糖値上昇抑制用組成物 |
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