华南理工大学学报(自然科学版) ›› 2018, Vol. 46 ›› Issue (11): 9-15,38.doi: 10.3969/j.issn.1000-565X.2018.11.002

• 食品科学与技术 • 上一篇    下一篇

食用油脂与加热方式对小麦淀粉结构和体外消化性的影响

黄强1,2 丁丽1,2 舒琴1,2 李萍1,2 关楠楠1,2 张斌1,2   

  1. 1. 华南理工大学 食品科学与工程学院∥广东省天然产物绿色加工与产品安全重点实验室,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:2018-04-27 修回日期:2018-07-17 出版日期:2018-11-25 发布日期:2018-10-02
  • 通信作者: 黄强(1976) ,男,博士,教授,主要从事碳水化合物科学与工程研究 E-mail:fechoh@scut.edu.cn
  • 作者简介:黄强(1976) ,男,博士,教授,主要从事碳水化合物科学与工程研究
  • 基金资助:
    国家重点基础研究发展计划项目( 2017YFD0400500) ;
    国家自然科学基金资助项目( 31701546) 

Effects of Edible 0il and Heating Methods on the Structure and in Vitro Digestibility of Wheat starch

HUANG Qiang1, 2 DING Li1, 2 SHU Qin1, 2 LI Ping1,2 GUAN Nannan1,2 ZHANG Bin1, 2    

  1. 1. School of Food Science and Engineering∥Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety,South China University of Technology,Guangzhou 510640,Guangdong,China;
    2. Zhuhai Institute of Modern Industrial Innovation,South China University of Technology,Zhuhai 519175,Guangdong,China
  • Received:2018-04-27 Revised:2018-07-17 Online:2018-11-25 Published:2018-10-02
  • Contact: 黄强(1976) ,男,博士,教授,主要从事碳水化合物科学与工程研究 E-mail:fechoh@scut.edu.cn
  • About author:黄强(1976) ,男,博士,教授,主要从事碳水化合物科学与工程研究
  • Supported by:
    The National Program on Key Basic Research Project of China( 2017YFD0400500) and the National Natural Science Foundation of China( 31701546) 

摘要: 本文研究了常用食用油脂和加热方式对小麦淀粉结构和体外消化性的影响。首先将黄油、棕榈油、大豆油等食用油与小麦淀粉按1:5(w/w)比例共混,然后对其分别进行恒定高温和持续升温两种热处理,制备淀粉-脂质复合物,并测定了其脂质含量、颗粒形貌、结晶结构、热力学性质及体外消化性。结果表明,淀粉与脂质复合后,结合脂质含量显著增加,其结晶结构由A型转变为A+V型。其中,棕榈油更易与小麦淀粉形成稳定的复合物。持续升温热处理较恒定高温相比,形成的复合物更稳定,且形成复合物的慢消化淀粉(SDS)及抗性淀粉(RS)含量均显著增加。经恒定高温热处理后,小麦淀粉-大豆油的SDS含量最高,为15.8%;经持续升温热处理后,小麦淀粉-棕榈油的SDS含量最高,达16.4%。

关键词: 淀粉-脂质复合物, 慢消化淀粉, 抗性淀粉, 食用油脂, 小麦淀粉, 体外消化性 

Abstract: The effects of common edible oils and heating methods on starch structure and in vitro digestibility of wheat starch were studied. The edible oils such as butter, palm oil and soybean oil were blended with wheat starch at the ratio of 1: 5 (w / w), and then were treated with constant high temperature heating and consecutive heating up respectly to prepare starch-lipid complexes. The lipids content, particle morphology, crystalline structures, thermal properties and in vitro digestibility of the complexes were determined. The results showed that complexed-lipids content of wheat starch increased significantly, and the crystalline structure of wheat starch changed from A type to A+V type after complexed with lipids. Among them, palm oil was easier to form stable complex with wheat starch. Compared with constant high temperature heating treatment, the complexes formed by consecutive heating up treatment were more stable, and the content of slow digestible starch (SDS) and resistant starch (RS) of complexes were significantly increased. After constant high temperature heating treatment, the starch-soybean oil complex showed the highest SDS content (15.8%), while the starch-palm oil complex showed the highest SDS content (16.4%) using consecutive heating up treatment.

Key words: starch-lipid complex, slow digestible starch, resistant starch, edible oil, wheat starch, in vitro digestibility

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