华南理工大学学报(自然科学版) ›› 2018, Vol. 46 ›› Issue (6): 116-121.doi: 10.3969/j.issn.1000-565X.2018.06.016

• 食品科学与技术 • 上一篇    下一篇

EGCG 和油酸协同降低淀粉消化速率的机制

何小维1 宋晶晶1 黄强1, 2 扶雄1, 2 张斌1   

  1. 1. 华南理工大学 食品科学与工程学院,广东 广州 510640;
    2. 华南理工大学 珠海现代产业创新研究院,广东 珠海 519175
  • 收稿日期:2017-12-03 修回日期:2018-03-20 出版日期:2018-06-25 发布日期:2018-05-07
  • 通信作者: 张斌( 1985-) ,男,博士,讲师,主要从事碳水化合物营养学研究 E-mail:zhangb@scut.edu.cn
  • 作者简介:何小维( 1959-) ,男,博士,教授,主要从事功能碳水化合物研究
  • 基金资助:
     国家自然科学基金青年科学基金项目( 31701546) ;广东省自然科学基金项目( 2017A030313207) ; 广州市科技计 划项目( 201704020080) ;华南理工大学中央高校基本科研业务费专项资金资助项目( 2017MS100) 

Synergistic Effect of EGCG and Oleic Acid on Lowing Starch Digestion Rate
 

 HE Xiaowei1 SONG Jingjing1 HUANG Qiang1, 2 FU Xiong1, 2 ZHANG Bin1   

  1.  1. School of Food Sciences and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;
    2. SCUT-Zhuhai Institute of Modern Industrial Innovation,Zhuhai 519175,Guangdong,China
  • Received:2017-12-03 Revised:2018-03-20 Online:2018-06-25 Published:2018-05-07
  • Contact: 张斌( 1985-) ,男,博士,讲师,主要从事碳水化合物营养学研究 E-mail:zhangb@scut.edu.cn
  • About author:何小维( 1959-) ,男,博士,教授,主要从事功能碳水化合物研究
  • Supported by:
    Supported by the National Natural Science Foundation of China( 31701546) ; Natural Science Foundation of Guangdong Province( 2017A030313207) ; Science and Technology Program of Guangzhou( 201704020080) 

摘要: 以表没食子儿茶素没食子酸酯( Epigallocatechin gallate, EGCG) 、油酸和米淀粉为 原料,基于一级动力学的体外消化模型,对淀粉、淀粉 + EGCG( EGCG 占 20%) 、淀粉 + 油 酸( 油酸占20%) 、淀粉 + EGCG +油酸( EGCG、油酸各占 20%) 4 种样品的体外消化特性 进行测定,分析淀粉消化速率及程度,通过对 EGCG 与淀粉、油酸的结合能力以及热力学 性能的测定,探究三元共混物相互作用与淀粉消化性能之间的关系. 结果表明:消化120min 后,米淀粉 + EGCG +油酸样品中淀粉消化速率及程度最低 ( 0. 041 min -1, 42. 5%) ,与米 淀粉对照样相比,其消化速率降低了 50%,消化程度降低了32%. 蒸煮条件下, EGCG、油 酸可能分别通过氢键和疏水相互作用与米淀粉结合,产生协同抑制米淀粉消化速率及程 度的作用. 

关键词: 表没食子儿茶素没食子酸酯, 油酸, 淀粉, 体外消化性 

Abstract: We aimed to elucidate the relationship between starch digestibility and interaction between starch and oleic acid in presence of epigallocatechin gallate ( EGCG) ,using a first-order kinetic model. Vitro digestion rate and extent of binary/ternary component blends ( starch,starch + EGCG,starch + oleic acid,starch + EGCG + oleic acid) were analyzed,and the binding capacity and thermal properties were determined by Folin-Ciocalteu method and differential scanning calorimetry respectively. Compared with the rice starch control, the digestion rate/ratio of starch + EGCG + oleic acid ( 0. 041 min -1,42. 5%) was decreased significantly ( ca. 50% reduction in digestion rate and 32% reduction in digestion extent. We concluded that EGCG and oleic acid showed synergistic effect on lowing starch digestibility through the hydrogen bond and hydrophobic interaction assessed by the binding capacity and thermal property of the binary/ternary component blends

Key words: epigallocatechin gallate, oleic acid, starch, vitro digestibility

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