Optimized preparation of anthocyanin-rich extract from black rice and its effects on in vitro digestibility
- Title
- Optimized preparation of anthocyanin-rich extract from black rice and its effects on in vitro digestibility
- Author
- 이현규
- Keywords
- alpha-Glucosidase inhibition; Anthocyanin; Black rice; In vitro starch digestibility; Predicted glycemic index
- Issue Date
- 2017-08
- Publisher
- KOREAN SOCIETY FOOD SCIENCE & TECHNOLOGY-KOSFOST
- Citation
- FOOD SCIENCE AND BIOTECHNOLOGY, v. 26, no. 5, page. 1415-1422
- Abstract
- The procedure for obtaining anthocyanin-enriched extracts from black rice was optimized by response surface methodology, and the effects of the optimized extract on in vitro starch digestibility were investigated in a wheat flour gel model. The experimental results were well-described by a polynomial multiple regression model (R-2 = 0.8812, p = 0.0546) with regard to anthocyanin content in anthocyanin-enriched extracts from black rice. The optimal conditions for obtaining anthocyanin-enriched extracts from black rice were 50.78% ethanol and 1 N HCl (0.60 mL), yielding a predicted anthocyanin content of 624.27 mg cyanidin 3 glucoside extract. The optimized anthocyanin-enriched extract was a stronger inhibitor of alpha-glucosidase than acarbose. Furthermore, the predicted glycemic index values of gels prepared with the optimized extract were significantly lower than that of wheat flour gel. These results indicate that the optimized extract suppressed starch hydrolysis by inhibiting digestive enzymes.
- URI
- https://link.springer.com/article/10.1007%2Fs10068-017-0188-xhttps://repository.hanyang.ac.kr/handle/20.500.11754/115123
- ISSN
- 1226-7708; 2092-6456
- DOI
- 10.1007/s10068-017-0188-x
- Appears in Collections:
- COLLEGE OF HUMAN ECOLOGY[S](생활과학대학) > FOOD & NUTRITION(식품영양학과) > Articles
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