Effect of extrusion on phytochemical profiles in milled fractions of black rice

文献类型： 外文期刊

第一作者： Ti, Huihui

作者： Ti, Huihui;Zhang, Ruifen;Zhang, Mingwei;Wei, Zhencheng;Chi, Jianwei;Deng, Yuanyuan;Zhang, Yan

作者机构：

关键词： Black rice;Extrusion;Phenolic content;Anthocyanin content;Antioxidant activity

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The phytochemical profile and antioxidant activities of unprocessed and extruded milled fractions of black rice were investigated. Extrusion increased the free phenolics, anthocyanins and oxygen radical absorbance capacity (ORAC) and decreased the bound forms. The total phenolics, anthocyanins and ORAC increased by 12.6%, 5.4% and 19.7%, respectively, in bran. Extrusion decreased both free and bound phenolics and anthocyanins while ORAC values decreased by 46.5%, 88.4% and 33.1%, respectively, in polished rice and by 71.2%, 87.9% and 14.7%, respectively, in brown rice. A total of seven phenolics, gallic, chlorogenic, vanillic, caffeic, syringic, p-coumaric and ferulic acids, were detected in both forms. Cyanidin 3-glucoside (Cy-3-G), cyanidin 3-rutinoside and peonidin 3-glucoside were also detected with Cy-3-G found in the highest amounts in unprocessed and extruded rice bran. These results provide the basis for the development of different milled fractions of extruded black rice with balanced nutritional characteristics for today's functional food markets. (C) 2015 Published by Elsevier Ltd.

分类号： TS2`TS201.2

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