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http://dx.doi.org/10.13103/JFHS.2013.28.3.227

Susceptibility of Foodborne Pathogens Isolated from Fresh-Cut Products and Organic Vegetable to Organic Acids and Sanitizers  

Park, Kyung Min (Korea Food Research Institute)
Baek, Minwoo (Korea Food Research Institute)
Kim, Hyun Jung (Korea Food Research Institute)
Kim, Byeong Sam (Korea Food Research Institute)
Koo, Minseon (Korea Food Research Institute)
Publication Information
Journal of Food Hygiene and Safety / v.28, no.3, 2013 , pp. 227-233 More about this Journal
Abstract
In this study, we evaluated the ability of various disinfectants to suppress the growth of microorganisms in fresh-cut products and organic vegetable. The growth of more than 50% of B. cereus isolates were suppressed by 50% ethanol, 0.1% hydrogen peroxide, 0.4% sodium hypochlorite or 1% calcium oxide. E. coli generally showed high susceptibility to concentration of 10% ethanol, 0.4% sodium hypochlorite and 1% calcium oxide. Eighty percent or more of S. aureus isolates exhibited resistance to ethanol, hydrogen peroxide and sodium hypochlorite, but the isolates were susceptible to concentrations of 1% calcium oxide. All isolates evaluated in this study were sensitive to benzalkonium chloride (BAC) and growth in the presence of $2.0{\mu}g/mL$ of BAC was completely inhibited. These pathogens showed widely different susceptibilities to different organic acids. Greater than 0.5% acetic acid and 2% and higher concentrations of malic acid and tartaric acid inhibited the growth of 60% of the isolates of B. cereus. Two percent acetic acid and tartaric acid inhibited 50% of the S. aureus isolates. Seventy percent of the E. coli isolates were resistant to malic acid and susceptible to 1% acetic acid and 10% tartaric acid. The antibacterial effects of the various sanitizers evaluated in this study were not only dependent on the type of disinfectant but also on the pathogen. Thus, it is important to select a sanitizer that is safe and effective at removing specific types of microorganisms.
Keywords
Fresh cut produce; Organic vegetable; Antimicrobial agent; Foodborne pathogen;
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