Electrostatic separation technology for obtaining plant protein concentrates: A review

文献类型： 外文期刊

第一作者： Zhu, Hong-Guang

作者： Zhu, Hong-Guang;Tang, Han-Qi;Cheng, Yong-Qiang;Li, Zai-Gui;Tong, Li-Tao

作者机构：

关键词： Dry separation; Ultrafine particle; Triboelectric charging; Electrostatic separator; Protein functionality

期刊名称：TRENDS IN FOOD SCIENCE & TECHNOLOGY （ 影响因子：12.563； 五年影响因子：14.466 ）

ISSN： 0924-2244

年卷期： 2021 年 113 卷

页码：

收录情况： SCI

摘要： Background: In recent years, animal proteins are being replaced by plant-based proteins worldwide. Artificial meat and eggs made from plant-based proteins have been widely commercialized, especially in developed countries such as the United States. However, the traditional wet separation can damage the isolated proteins as well as have a negative impact on the environment. Therefore, there is a growing research interest in developing alternative methods, such as dry separation, for high quality plant protein separation. Scope and approach: Electrostatic separation, a dry technology based on the different triboelectric charging properties of materials, has been used for plant protein separation in recent years. This review summarizes the technical issues that need to be considered, from material preparation to equipment construction, for electrostatic separation. Moreover, the separation efficiency, energy consumption, combination with other separation methods, the functionality of the resulting protein concentrates, and prospects for electrostatic separation are also reviewed here. Key findings and conclusions: Factors influencing the outcomes of electrostatic separation include the pretreatment of materials, design of the electrostatic separator, and process parameters. The separation efficiency of electrostatic separation can be further improved by cyclic separation or a combination of electrostatic separation with other methods. However, although the proteins obtained by electrostatic separation maintain their native functional properties, they are affected by the presence of other components such as phenolics or starch. Thus, electrostatic separation has several limitations that need to be addressed before it can be used widely.

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