Variable-intensity electrostatic fields inhibit specific spoilage organisms in fresh meat: Mechanisms and antimicrobial efficacy

IF 9.8 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2025-10-02 DOI:10.1016/j.foodchem.2025.146593

Su Wang, Debao Wang, Xiangyuan Wen, Yuqian Xu, Dongmei Leng, Qingfeng Yang, Chengli Hou, Xin Li, Dequan Zhang

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Abstract

The inhibition of specific spoilage organisms in fresh meat is critical for extending shelf life. This study evaluated the antimicrobial effects of electrostatic fields intensities on specific spoilage organisms of Serratia proteamaculans VF12 (Gram-negative) and Lactobacillus sakei VMR17 (Gram-positive). The results demonstrated that both high-voltage (12 kV, corresponding to an electrostatic field intensity of 120 kV/m) and low-voltage (4 kV, electrostatic field intensity of 40 kV/m) electrostatic field treatments inhibited the growth of specific spoilage organisms compared to the control group. The high-voltage electrostatic field treatment induced structural damage to the cellular membranes of specific spoilage organisms, leading to increased permeability and loss of cell wall integrity. Furthermore, scanning electron microscopy images demonstrated visible surface deformation and pore formation in treated cells, corroborating the irreversible damage to membrane integrity. These findings indicated that the inhibition efficacy of electrostatic fields on specific spoilage organisms by impairing cellular structures and functions.

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变强度静电场抑制鲜肉中的特定腐败微生物：机制和抗菌效果

抑制鲜肉中特定的腐败微生物对延长鲜肉的保质期至关重要。本研究评价了静电场强度对革兰氏阴性的变形沙雷氏菌VF12和革兰氏阳性的酒糟乳杆菌VMR17的抑菌效果。结果表明，与对照组相比，高压（12 kV，对应的静电场强为120 kV/m）和低压（4 kV，对应的静电场强为40 kV/m）静电场处理均能抑制特定腐败菌的生长。高压静电场处理对特定腐坏菌的细胞膜造成结构损伤，导致渗透性增加和细胞壁完整性丧失。此外，扫描电镜图像显示，处理过的细胞中可见的表面变形和孔形成，证实了膜完整性的不可逆损伤。这些结果表明，静电场对特定腐败菌的抑制作用是通过破坏细胞结构和功能来实现的。

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.