Effect of ethanol addition on the physicochemical, structural and in vitro digestive properties of Tartary buckwheat starch-quercetin/ rutin complexes
文献类型： 外文期刊
作者： Wang, Libo 1 ; Huang, Yilin 1 ; Ren, Yanjuan 1 ; Wang, Haoran 4 ; Ding, Yue 1 ; Ren, Guangyue 1 ; Wang, Tongtong 5 ; Li, Zaigui 2 ; Qiu, Ju 2 ;
作者机构： 1.Henan Univ Sci & Technol, Coll Food & Bioengn, 263 Kaiyuan Ave, Luoyang 471023, Henan, Peoples R China
2.China Agr Univ, Dept Nutr & Hlth, 17 Qinghuadonglu, Beijing 100083, Peoples R China
3.Henan Univ Technol, Sch Food & Strateg Reserv, Zhengzhou 450001, Henan, Peoples R China
4.Beijing Univ Agr, Coll Food Sci & Engn, Beijing 102206, Peoples R China
5.Chinese Acad Agr Sci, Inst Qual Stand & Testing Technol Agriprod, Key Lab Agrofood Safety & Qual, Minist Agr & Rural Affairs, Beijing 100081, Peoples R China
关键词： Ethanol; Phenolics; Starch morphology; Crystalline structure; Slowly digestible starch; Binding site
期刊名称：FOOD CHEMISTRY （ 影响因子：8.8； 五年影响因子：8.6 ）
ISSN： 0308-8146
年卷期： 2024 年 451 卷
页码：
收录情况： SCI
摘要： The effects of ethanol on the physicochemical, structural and in vitro digestive properties of Tartary buckwheat starch-quercetin/rutin complexes (e-TBSQ and e-TBSR) were investigated. Ethanol restricted the gelatinization of Tartary buckwheat starch (TBS), which resulted an increase in Delta H, G' and G" as well as a decrease in apparent viscosity of e-TBSQ and e-TBSR. The particle size, scanning electron microscopy and X-ray diffraction results showed that ethanol influenced the morphological structure of TBS granules and the starch crystalline structure in e-TBSQ and e-TBSR changed from B-type to V-type when the ethanol concentration was 25%. Saturation transfer difference-nuclear magnetic resonance results revealed that ethanol weakened the binding ability of quercetin/rutin to TBS in e-TBSQ and e-TBSR, leading to a change in the binding site on the quercetin structural unit. The residual ungelatinized TBS granules in e-TBSQ and e-TBSR induced a high slowly digestible starch content, and thus displayed a "resistant-to-digestion".
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