Research Progress of Cold Plasma-induced Inactivation of Bacterial Spores
2024
Liyuan NIU | Dianhe ZHANG | Yunfang MA | Qisen XIANG
Spores are the main dormant forms of some bacteria under harsh environment conditions, which are widely distributed in nature. Bacterial spores have a rigid structure, which helps resist to environmental stresses such as heat and ultraviolet radiation. At present, it is difficult to inactivate bacterial spores by the conventional sterilization methods used in the food industry. Therefore, bacterial spores are one of the most important factors influencing the food safety. In recent years, the application of non-thermal processing technologies in killing spores has received great deal of attention. Cold plasma is a novel non-thermal physical sterilization technology, which has a broad application prospect in the food industry due to its various advantages such as high bactericidal efficiency, low energy consumption, and secondary pollution-free. In this paper, the application of cold plasma in the inactivation of bacterial spores in foods is reviewed, and the underlying mechanisms are also summarized in detail. Moreover, the effects of diverse factors on cold plasma-induced spores inactivation are analyzed, and the future research direction is also prospected. This article provides important theoretical basis for the practical application of cold plasma in food safety and quality control.
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