Inactivation of Lactobacillus Bacteriophages by Dual Chemical Treatments

Author:

XU MING123,MA RUIRUI123,ZHANG CAN123,HUANG XUECHENG123,GAO XIN123,LV RUIRUI123,CHEN XIA123

Affiliation:

1. Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education , Inner Mongolia Agricultural University , Hohhot , P.R. China

2. Key Laboratory of Dairy Products Processing, Ministry of Agriculture and Rural Affairs , Inner Mongolia Agricultural University , Hohhot , P.R. China

3. Collaborative Innovative Center of Ministry of Education for Lactic Acid Bacteria and Fermented Dairy Products , Inner Mongolia Agricultural University , Hohhot , P.R. China

Abstract

Abstract Phage contamination is one of the significant problems in the food fermentation industry, which eventually causes economic losses to the industry. Here, we investigated the viability of Lactobacillus plantarum phage P1 and P2 using various biocides treatments (ethanol, isopropanol, sodium hypochlorite and peracetic acid). Results indicated that phage P1 and P2 could be completely inactivated by treatment with 75% ethanol for 5 min, followed by 400 ppm of sodium hypochlorite treatment for 5 min. Phage P2 could be completely inactivated in the reverse sequence, while 800 ppm of sodium hypochlorite was required to achieve a similar effect for phage P1. Moreover, 100% isopropanol could increase the inactivating effect of 75% ethanol. This study may provide basic information on using multiple antimicrobials for phage control in laboratories and food plants.

Publisher

Polish Society of Microbiologists

Subject

Microbiology (medical),Applied Microbiology and Biotechnology,General Medicine,Microbiology

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