Structure optimization of pulsed electric field processor and its sterilization effect
作者机构：School of Electrical EngineeringXi’an Jiaotong UniversityXi’anChina Guangdong Xi’an Jiaotong University AcademyFoshanChina
出 版 物：《Food Quality and Safety》 (食品品质与安全研究（英文版）)
年 卷 期：2024年第8卷第1期
页 面：92-104页
核心收录：
学科分类：0832[工学-食品科学与工程（可授工学、农学学位）] 08[工学] 082203[工学-发酵工程] 0822[工学-轻工技术与工程]
基 金：the Key R&D Program of Guangdong Province(No.2018B020239001) China
主 题：Pulsed electric field multi-physics field simulation cellular transmembrane voltage electroporation.
摘 要：Pulsed electric field(PEF)technology is a highly promising non-thermal processing technique,which holds great potential for sterilizing liquid *** effectiveness of this treatment depends on two crucial factors:pulse parameters and the structure of the *** this study,we focus on optimizing the shape of insulators within the PEF processor to improve the sterilization *** research provides a reliable technical reference for designing industrial *** numerical simulation of multi-physics fields was employed to analyze the temperature,electric field,and fluid field distributions for different ***,the geometric structure of the insulator was optimized by embedding a 0.7-mm *** experiments were then conducted on Escherichia coli and Staphylococcus aureus suspensions with conductivities similar to those of real grapefruit *** sterilization effect of the processor with the optimized structure and the maximum applied voltage was examined at the same driving *** results indicate that compared to the original structure,there is an increase in withstanding voltage by 5–10 kV while maintaining significantly improved bactericidal effects at the same applied ***,we preliminarily discussed the sterilization mechanism by combining electroporation theory with the electroporation threshold of ***.
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