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Effect of Omija(Schizandra chinensis) Extract on the Growth Inhibition of Food Borne Pathogens in Yoghurt  

홍경현 (경원대학교 식품영양학과)
남은숙 (경원대학교 식품영양학과)
박신인 (경원대학교 식품영양학과)
Publication Information
Food Science of Animal Resources / v.23, no.4, 2003 , pp. 342-349 More about this Journal
Abstract
Escherichia coli O157:H7, Staphylococcus aureus and Salmonella enteritidis are food borne pathogens involved in food poisoning in numerous countries. This study aimed to obtain knowledges on the survival of Esc coli O157:H7, Sta aureus and Sal. enteritidis in the yoghurt added with water extract of Omija(Schizandra chinensis). The growth inhibition of Schizandra chinensis extract on the food borne pathogens were measured by total microbial count and effect of growth inhibition was correspondent to the concentration of Schizandra chinensis extract. The highest growth inhibition effect of Schizandra chinensis extract was shown on the Sta aureus followed by Sal. enteritidis and Esc. coli O157:H7. The number of surviving Esc. coli O157:H7 cell(3.55${\times}$10$\^$5/ CFU/mL) was decreased to 1.00${\times}$10$^1$∼3.00${\times}$10$^1$ CFU/mL after 24 hours incubation by the addition of 0.4∼l.0% of Schizandra chinensis extract in the yoghurt. And also the viable cell counts of surviving Sta. aureus cells (initial inoculum 1.24${\times}$10$\^$5/ CFU/mL) were decreased gradually to 4.00${\times}$10$^2$∼8.50${\times}$10$^2$ CFU/mL after 48 hours of incubation, but the viable cells of Sal. enteritidis were not detected after 24 hours of incubation. Growth of the food borne pathogens was strongly inhibited by the addition and incubation of Schizandra chinensis extract for 48 hours in the yoghurt.
Keywords
Omija(Schizandra chinensis); drink yoghurt; growth inhibition; food home pathogens;
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