1. Bactericidal effects of a low-temperature acidic electrolyzed water on quantitative suspension, packaging and contact surface in food cold chain.
- Author
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Ren, Zhandong, Wang, Ming, Heng, Yaping, Tian, Miaojie, Jiang, Hucheng, Zhang, Jin, Song, Yujia, and Zhu, Yuchan
- Subjects
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WATER electrolysis , *ESCHERICHIA coli , *ETHYLENE glycol , *FREEZING points , *LOW temperatures , *DISINFECTION & disinfectants - Abstract
The research and development of high-efficiency low-temperature disinfection technology in all aspects of cold-chain food has begun to receive attention. This paper aims to develop low temperature acidic electrolyzed water (LT-AEW) disinfectant. The anti-freezing temperature, disinfection efficiency and practical application effect were evaluated in detail. The results had shown that the freezing point of AEW can be reduced to −18 °C by adding 25% CaCl 2 , 20% NaCl, 30% ethylene glycol (EG) and 35% propylene glycol (PG). At the low temperature (−1, −10 and −18 °C), the bactericidal efficiencies of all EG-acidic electrolyzed waters (EG-AEWs) with different EG contents were close. The reason is that although the low temperature environment will reduce the sterilization efficiency of EG-AEW, the addition of EG can promote the increase of HClO content in EG-AEW, thus increasing the sterilization efficiency. As long as the HClO content reached 35.2, 50.8 and 64.3 mg L−1, the killing logarithm (KL) value had achieved 4.50, 4.49 and 5.07 log 10 (CFU mL−1). Finally, the KL values of EG-AEW against Escherichia coli on the corrugated board and stainless-steel board both exceeded 3 log 10 (CFU mL−1) at the low temperature, which indicates that EG-AEW can be applied in food cold chain. • A low temperature acidic electrolyzed water (LT-AEW) is studied for the first time. • The freezing point of ethylene glycol AEW (EG-AEW) can reach to −18 °C. • The killing logarithm of EG-AEW against E. coli is 5.07 log 10 (CFU mL−1) at −18 °C. • EG-AEW can effectively sterilize E. coli on corrugated and stainless-steel board. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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