JP2021050144A - 糖取込み促進剤および該糖取込み促進剤の製造方法 - Google Patents
糖取込み促進剤および該糖取込み促進剤の製造方法 Download PDFInfo
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- brassica oleracea
- oleracea var
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- acepha
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Abstract
Description
のシナピン酸誘導体、下記式(2)
のシナピン酸誘導体、下記式(3)
のシナピン酸誘導体、下記式(4)
のシナピン酸誘導体および下記式(5)
のシナピン酸誘導体よりなる群からなる選ばれる1種または2種以上であることを特徴とするものである。
本発明の糖取込み促進剤は、Brassica oleracea var. gemifera DC. X Brassica oleracea var. acepha DC.を含有することを特徴とするものである。また、本発明の糖取込み促進剤は、シナピン酸誘導体を含有し、前記シナピン酸誘導体が、下記式(1)
のシナピン酸誘導体、下記式(2)
のシナピン酸誘導体、下記式(3)
のシナピン酸誘導体、下記式(4)
のシナピン酸誘導体および下記式(5)
のシナピン酸誘導体よりなる群からなる選ばれる1種または2種以上であることを特徴とするものである。
のシナピン酸誘導体、下記式(2)
のシナピン酸誘導体、下記式(3)
のシナピン酸誘導体、下記式(4)
のシナピン酸誘導体および下記式(5)
のシナピン酸誘導体よりなる群からなる選ばれる1種または2種以上であることが好ましい。
Brassica oleracea var. gemifera DC. X Brassica oleracea var. acepha DC.の葉を切取り(カット)乾燥させて粉末にしたものから主要な化合物を抽出・分画し5種のポリフェノール化合物を単離し、構造解析を行い分子内にシナピン酸構造を有する上記式(1)〜(5)のシナピン酸誘導体と同定した。詳細を下記に記す。
化合物1(上記式(1)のシナピン酸誘導体:13C−NMR (MeOH−d4) δ: 56.3x2, 61.7, 62.2X2, 62.4, 71.2, 71.3, 71.5, 74.5, 74.9, 75.0, 75.1, 75.8, 76.0, 76.6, 77.8x2, 78.0, 78.2, 80.2, 82.0, 95.3, 97.0, 98.5, 100.7, 101.2, 104.5, 105.6x2, 107.5, 116.0, 116.2x2, 122.9, 126.0, 132.2x2, 134.8, 138.7, 146.5, 148.7x2, 157.3, 157.7, 161.4, 162.1, 164.1, 168.4, 179.1. 1H−NMR (MeOH−d4) δ: 3.29 (overlapping), 3.30 (overlapping), 3.32 (1H, t, 9.0 Hz), 3.35 (1H, t, 9.0 Hz), 3.40 (overlapping), 3.43 (1H, t, 9.0 Hz), 3.50 (1H, dd, 12.0, 5.5 Hz), 3.53 (overlapping)x3, 3.58 (1H, dd, 9.0, 8.0 Hz), 3.59 (6H, s), 3.67 (1H, br d, 11.5 Hz), 3.69 (1H, t, 9.0 Hz), 3.70 (overlapping), 3.72 (overlapping), 3.75 (1H, t, 9.0 Hz), 3.78 (1H, dd, 11.5, 4.0 Hz), 3.81 (1H, t, 9.0 Hz), 3.85 (1H, t, 9.0 Hz), 3.91 (overlapping)x3, 3.99 (1H, br d, 12.0 Hz), 4.48 (1H, d, 8.0 Hz), 4.95 (1H, dd, 9.0, 8.0 Hz), 5.13 (1H, d, 8.0 Hz), 5.25 (1H, d, 8.0 Hz), 6.10 (1H, d, 16.0 Hz), 6.16 (1H, d, 8.0 Hz), 6.25 (2H, s), 6.38 (1H, s)x2, 6.90 (2H, d, 8.5 Hz), 7.31 (1H, d, 16.0 Hz), 7.89 (2H, d, 8.5 Hz).
上記式(1)〜(5)のシナピン酸誘導体を培養したマウス筋芽細胞C2C12細胞におけるグルコースの取り込み作用を検討した。
[培養細胞種]マウス筋芽細胞C2C12細胞 (ATCC, CRL−1772)
[被験物質]下記表1記載に示した被験物質を用いた。具体的には、Brassica oleracea var. gemifera DC. X Brassica oleracea var. acepha DC.粉末より抽出・単離した上記式(1)〜(5)のシナピン酸誘導体、市販の試薬(ケルセチン、ケンフェロール、シナピン酸、フェルラ酸、ケフェー酸)について試験を行った。なお、以下では、被験物質番号で表記することもある。
被験物質添加分化培地(最高終濃度100μM(マイクロモル)、0.1vol% DMSO、10倍希釈計7段階)および溶媒対照(0.1vol% DMSO)添加分化培地に置換し、24時間培養し細胞数を測定して細胞毒性を調べた。
表1記載の被験物質(被験物質番号P01〜P10)について、終濃度100μM、10μM、1μMで添加し、24時間培養し、培地を脱感作培地(FBS無添加の分化培地)に置換してさらに18時間培養した。脱感作の後、インスリンの有無および被験物質を含む分化培地で1時間細胞を処理したのち、細胞への糖取込をPromega社製Glucose Uptake−Glo Assay kitにて測定した。試験はn=5で行った。結果を下記表2〜3、図6〜図15に示す。また、表2は、インスリン無添加時の結果であり、表3は、インスリン添加時の結果である。表2に示すインスリン無添加のデータはインスリン様作用(インスリンと同じ糖を取り込ませる作用)を表し、本発明の作用機序を示すものである。一方、インスリン添加のデータは、インスリンの作用を助ける効果を示すものである。さらに、図6〜図15のグラフは、発光強度の実測値ではなく、コントロールを100とした相対比のデータを示すものである。
下記条件で、上記式(1)〜(5)のシナピン酸誘導体の定量分析を行った。結果を下記表4に示す。表4中、%は質量%を示す。
・Disinapoyl−gentiobioside(上記式(5)のシナピン酸誘導体)
・Quercetin−3−O−sinapoyl−sophoroside−7−O−diglucoside(上記式(3)のシナピン酸誘導体)
・Quercetin−3−O−sinapoyl−sophoroside−7−O−D−glucoside(上記式(4)のシナピン酸誘導体)
・Kaempferol−3−O−sinapoyl−sophoroside−7−O−diglucoside(上記式(1)のシナピン酸誘導体)
・Kaempferol−3−O−sinapoyl−sophoroside−7−O−D−glucoside(上記式(2)のシナピン酸誘導体)
・Column(カラム):Cosmosil 2.5Cholester (2.5 μm), i.d. 3.0 x 100 mm (NACALAI TESQUE,INC.)
・Mobile phase(移動相): A 0.1%TFA, BCH3CN, gradient, 0―20 min: 6―11% B linear, 20―36 min: 11―27% B linear、36―45 min:27% B
・Flow rate(流速):0.75 ml/min
・Detection(検出器):UV 330 nm
・Columntemperature(カルム温度):40℃
・Brassica oleracea var. gemifera DC. X Brassica oleracea var. acepha DC.「外葉」A
・Brassica oleracea var. gemifera DC. X Brassica oleracea var. acepha DC.「外葉」B
・Brassica oleracea var. gemifera DC. X Brassica oleracea var. acepha DC.「外葉+茎」B
・ケール
・芽キャベツ
・キャベツ
・Brassica oleracea var. gemifera DC. X Brassica oleracea var. acepha DC.「実」B
※Brassica oleracea var. gemifera DC. X Brassica oleracea var. acepha DC.「外葉」のAとBの違いは、産地の違いである。
2 外葉(本葉)
3 実(脇芽)
4 茎(主茎)
Claims (4)
- Brassica oleracea var. gemifera DC. X Brassica oleracea var. acepha DC.を含有することを特徴とする糖取込み促進剤。
- Brassica oleracea var. gemifera DC. X Brassica oleracea var. acepha DC.をカットし、次いで乾燥し、乾燥後粉末化することを特徴とする糖取込み促進剤の製造方法。
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