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Green preparation of holocellulose nanocrystals from burdock and their inhibitory effects against alpha-amylase and alpha-glucosidase

文献类型: 外文期刊

作者: Li, Ying 3 ; Liang, Wei 1 ; Huang, Meigui 2 ; Huang, Wuyang 3 ; Feng, Jin 3 ;

作者机构: 1.Jiangsu Univ, Sch Food & Biol Engn, 301 Xuefu Rd, Zhenjiang 212013, Jiangsu, Peoples R China

2.Nanjing Forestry Univ, Coll Light Ind & Food Engn, Dept Food Sci & Engn, 159 Longpan Rd, Nanjing 210037, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Agroprod Proc, 50 Zhongling St, Nanjing 210014, Peoples R China

期刊名称:FOOD & FUNCTION ( 影响因子:6.317; 五年影响因子:6.375 )

ISSN: 2042-6496

年卷期: 2022 年 13 卷 1 期

页码:

收录情况: SCI

摘要: In this work, holocellulose nanocrystals (hCNCs) were isolated from burdock insoluble dietary fiber (IDF) by enzymatic hydrolysis and ultrasonic treatment and their inhibitory effects against alpha-amylase and alpha-glucosidase were investigated. The hydrodynamic diameter of hCNCs decreased from about 600 to 200 nm with increasing sonication time, accompanied by an improvement in cellulose and glucose contents. Steady-state fluorescence studies suggested that static complexes were formed between hCNCs and alpha-amylase or alpha-glucosidase via a spontaneous and endothermic approach, which was driven by both hydrophobic interactions and hydrogen bonding. The median inhibitory concentration (IC50) values of hCNCs against the tested enzymes were positively correlated with their size, and non-competitive and mixed types of inhibition were detected using the Lineweaver-Burk plots. During the simulated digestion, the inclusion of burdock hCNCs obviously retarded the starch hydrolysis in both dose- and size-dependent manners, suggesting their potential in blocking the postprandial serum glucose upsurge.

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