泡沫分馏技术的过程强化策略及其在食品工业中的应用研究进展

Process Intensification Strategies of Foam Fractionation and Its Applications in Food Industry

泡沫分馏是一项绿色、经济的初级分离技术,在食品工业领域具有良好的应用前景。然而,由于操作参数对界面吸附和泡沫排液具有截然相反的影响,泡沫分馏间歇操作很难同时获得较高的富集比和回收率。为了解决这一难题,研究者们开发了多种泡沫分馏过程强化策略。本文首先对近年来界面吸附和泡沫排液过程强化的相关研究进行概括总结,并分析了各种方法的优缺点。随后,综述了泡沫分馏在蛋白质、酶类、皂苷、多酚类物质和生物防腐剂的分离中的研究进展。基于文献梳理和问题分析,未来可开展以下三方面研究以促进泡沫分馏的工业应用:开发能够同时强化界面吸附和泡沫排液的新方法;开发能够特异结合非表面活性物质且可重复使用的新型捕收剂;抑制解吸过程中的蛋白质变性。

Foam fractionation is a green and economical primary separation technique and it has excellent application prospect in the field of food industry.However,it is difficult to simultaneously obtain the high values of enrichment ratio and recovery percentage in a batch operation of foam fractionation due to the opposite effects of operating parameters on interfacial adsorption and foam drainage.In order to solve this problem,multiple process intensification strategies of foam fractionation are developed.In this work,the current studies on the intensification methods of interfacial adsorption and foam drainage were firstly reviewed.The advantages and disadvantages of these methods are analyzed.Subsequently,the research progress of foam fractionation in the separation of proteins,enzymes,saponins,polyphenols and biological preservatives are summarized.Based on the literature review and problem analysis,three future research respects are proposed to promote the industrial application of foam fractionation:Developing new methods which would simultaneously improve interfacial adsorption and foam drainage,designing new collectors with strong binding specificity for non-surfaceactive materials and good reusability,and inhibiting protein denaturation during desorption process.