Optimization of the powder state to enhance the enrichment of functional mung bean protein concentrates obtained by dry separation

文献类型： 外文期刊

第一作者： Zhu, Hong-Guang

作者： Zhu, Hong-Guang;Wang, Yuan;Cheng, Yong-Qiang;Li, Zai-Gui;Tong, Li-Tao;Zhu, Hong-Guang;Wang, Yuan;Li, Zai-Gui

作者机构：

关键词： Mung bean; Dry separation; Process optimization; Separation efficiency; Protein properties

期刊名称：POWDER TECHNOLOGY （ 影响因子：5.134； 五年影响因子：4.801 ）

ISSN： 0032-5910

年卷期： 2020 年 373 卷

页码：

收录情况： SCI

摘要： To increase the purity and yield of mung bean protein concentrates obtained by dry separation, the state of the powder was optimized from the milling to air classification processes. Relatively coarse milling (rotator frequency 40 Hz) by a full-scale airflow impact mill generated sufficient detached protein bodies while not overly damaging the starch granules. Subsequently, a higher classifier wheel frequency (50-70 Hz), an induced-draft fan frequency (50-70 Hz), and a lower feed rate (1.0-6.0 kg/h) reduced the cut point and fish-hook effect, thereby contributing to the improvement of protein separation efficiency. Under optimal conditions designed by response surface methodology (RSM), the protein concentrates with separation efficiency 84.0 +/- 4.4% and superior free radical scavenging capacity when compared with original flour and protein isolate (wet) was obtained. These results provide insight into the critical parameters affecting powder state, thus facilitating the development of a dry separation method to fractionate mung bean protein. (C) 2020 Published by Elsevier B.V.

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