期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 136, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.lwt.2020.110294
关键词
High-pressure homogenization; Rice starch-fatty acid complex; Multi-scale structures; Digestibility
资金
- National Natural Science Foundation of China (NSFC) Guangdong Joint Fund [U1501214]
- National Natural Science Foundation of China (NSFC) [31871751]
- Key Project of Guangzhou Science and Technology Program [201804020036]
- Government of Guangdong Province under a YangFan Innovative and Entrepreneurial Research Team Project [2014YT02 S029]
Increasing the level of fatty acids led to higher complexing index, while increasing chain length led to lower complexing index. The short-range ordered structure and thermal stability of HRFC increased with higher chain length or addition level of fatty acids.
The effects of chain length and addition level of saturated fatty acids on multi-scale structure of rice starch-fatty acid complexes prepared by high-pressure homogenization (HRFC) were investigated, as was the correlation between their structural changes and digestibility. Increasing the addition level of fatty acids increased complexing index (CI) of HRFC, but increasing the chain length decreased the CI. Compared with high-pressure homogenization treated starch, the HRFC presented a V-type polymorph with a higher degree of short-range ordered structure. Increased single helix contents, crystallinities, degree of ordered structures, and thermal stabilities with HRFC were confirmed as the chain length or addition level of the fatty acids increased. When the chain length increased to 18 C-atoms, the helical structure of the resulting HRFC changed from V7 to V6, and the complex type changed from IIb to IIa. Combined with the digestion profiles of HRFC, the degree of short-range ordered structure, single helix contents, crystallinity, mass fractal dimension, and thermal stability were negatively correlated with rapidly digestible starch contents but positively correlated with the slowly digestible starch and resistant starch contents. Overall, these results suggested a systematic correlation mechanism of the multi-scale structure in regulating the digestion properties of starch-fatty acid complexes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据