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Foam separation of whey soybean protein with "microflower-templated" temperature-responsive Janus sheets as an
Fan Yang1, Cailiang Zhang1, Xinnan Ma2
1College of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
Abstract:
For recovering whey soybean protein (WSP) from soybean whey wastewater (SWW) in food industry, a foam separation method for separating WSP by using temperature-responsive Janus sheets (MF-JNSs-PN) as foam stabilizer was established. MF-JNSs-PN was prepared by grafting the temperature-responsive polymer PNIPAM onto one side of the sheet inorganic material using BSA@Cu3(PO4)2-MF as the template. MF-JNSs-PN has a good ability to stabilize the foam due to inducing the hydrophilicity and hydrophobicity transition by adjusting the temperature. Under optimal conditions, the recovery and enrichment ratios of foam separation were 88.57 % and 1.2216, respectively. Compared with the system without Janus sheets, foam separation of WSP with MF-JNSs-PN could achieve efficient separation and enrichment, and the exhibiting excellent reusability. This work is expected to provide a reference for the recovery of WSP in SWW and provide new possibilities for the application of Janus particles in response.
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