Bactericidal efficacy of lithium magnesium silicate hydrosol incorporated with slightly acidic electrolyzed water in disinfection application against Escherichia coli


Submitted: 16 July 2023
Accepted: 11 December 2023
Published: 18 January 2024
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In food safety implementation, bacterial inactivation is an imperative aspect of hygiene and sanitation. Studies on lithium magnesium silicate (LMS) hydrosol incorporated with slightly acidic electrolyzed water (SAEW) for decontamination of pathogenic bacteria are limited. This present study aimed to investigate the bactericidal efficacy of LMS hydrosol incorporated with SAEW against Escherichia coli. Optimum combination conditions of SAEW, hydrosol concentration, and available chlorine concentration (ACC) were optimized by response surface methodology under the central composite design against the growth of E. coli. The optimum combination conditions of exposure time, hydrosol concentration, and ACC were 9.5 minutes, 1.7%, and 20.5 ppm, respectively. The results showed that the increase in ACC led to inactivation in the survival of E. coli compared with the control (p<0.05). It can be concluded that the best combination percentage between SAEW and hydrosol ranged from 1.5-1.7%, in which E. coli was reduced by 4.50 log10 CFU/mL at an ACC of 9.94 ppm. When increasing the ACC to 14.84 ppm, E. coli was reduced by 4.51 log10 CFU/mL compared with the initial number of bacteria (8.20 log10 CFU/mL) in the control group. The number of bacteria was undetected after increasing ACC to 19.93, 25.15, and 29.88 ppm at 10 min. This study suggests that LMS hydrosol incorporated with SAEW could potentially be used as an effective sanitizer.


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Hamzah Aleryani, College of Food Science and Technology, Yunnan Agricultural University, Kunming; College of Food Science and Technology, Hebei Agricultural University, Baoding

Department of Food Sciences, Faculty of Agriculture and Food Sciences, Ibb University, Yemen

Adhita Sri Prabakusuma, College of Food Science and Technology, Yunnan Agricultural University, Kunming

Food Biotechnology Research Group, Vocational School of Foodservice Industry, Universitas Ahmad Dahlan, Yogyakarta, Indonesia

Abdullah Abdo, College of Food Science and Technology, Hebei Agricultural University, Baoding

Department of Food Sciences, Faculty of Agriculture and Food Sciences, Ibb University, Yemen

Zakarya Al-Zamani, Department of Food Sciences, Faculty of Agriculture and Food Sciences, Ibb University

Department of Dairy Science and Food Technology Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India

1.
Aleryani H, Qing G, Sri Prabakusuma A, Abdo A, Al-Dalali S, Al-Zamani Z, Xintan J, Jin-song H. Bactericidal efficacy of lithium magnesium silicate hydrosol incorporated with slightly acidic electrolyzed water in disinfection application against <i>Escherichia coli</i>. Ital J Food Safety [Internet]. 2024 Jan. 18 [cited 2024 Apr. 16];13(1). Available from: https://www.pagepressjournals.org/ijfs/article/view/11587

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