Microbial quality of fresh vegetables in restaurants around school

학교주변식당 신선 채소류의 미생물 오염도 조사

  • Jo, So Hyun (Department of Food Science and Technology and Functional Food Research Center, Chonnam National University) ;
  • Chung, Hyun-Jung (Department of Food and Nutrition, Inha University) ;
  • Lee, Seong Hee (Department of Nutrition and Culinary, Chosun College of Technology) ;
  • Hwang, Su Jung (Faculty of Herbal Food Cuisine and Nutrition, Daegu Hanny University) ;
  • Om, Ae-Son (Department of Food and Nutrition, Hanyang University) ;
  • Eun, Jong-Bang (Department of Food Science and Technology and Functional Food Research Center, Chonnam National University)
  • 조소현 (전남대학교 식품공학과, 기능성식품연구센터) ;
  • 정현정 (인하대학교 식품영양학과) ;
  • 이성희 (조선이공대학교 식품영양조리과학과) ;
  • 황수정 (대구한의대학교 한방식품조리영양학부) ;
  • 엄애선 (한양대학교 식품영양학과) ;
  • 은종방 (전남대학교 식품공학과, 기능성식품연구센터)
  • Received : 2013.04.12
  • Accepted : 2013.04.23
  • Published : 2013.06.30


Microbiological contamination of 4 vegetables (garlic, red pepper, perilla leaf and lettuce) collected from 10 restaurants around university was examined. The vegetables were evaluated for total plate count, coliforms, psychrophiles, yeast, and Staphylococcus aureus. The results of total plate count showed the highest value as $5.4{\pm}0.69$ log CFU/g in lettuce, following by $4.8{\pm}1.53$ log CFU/g in red pepper, $4.5{\pm}1.65$ log CFU/g in perilla leaf and $3.4{\pm}1.27$ log CFU/g in garlic. The contamination level of coliforms and psychrophiles were highest in red pepper with maximum as 4.7 log CFU/g and 8.2 log CFU/g, respectively. Red pepper of psychrophiles showed the highest average value as $5.0{\pm}1.82$ log CFU/g followed by $4.2{\pm}1.91$ log CFU/g in lettuce, $4.7{\pm}1.55$ log CFU/g in perilla leaf and $2.4{\pm}2.10$ log CFU/g in garlic. The average number of yeasts were highest in perilla leaf with $4.4{\pm}1.41$ log CFU/g and were lowest in garlic with $0.9{\pm}1.41$ log CFU/g. The contamination level of S. aureus was detected in 27 samples among the total 40 samples with the range of 0.5-5.2 log CFU/g. In conclusion, the microbial quality of the fresh vegetables evaluated in this study was not very good. Therefore, it needs to be enhanced through the good sanitation management and production and distribution methods to improve the safety of fresh vegetables.


Supported by : 농림수산식품부


  1. Kim JS, Bang O, Ghang HC (2004) Examination of microbiological contamination of ready-to-eat vegetable salad. J Fd Hyg Safety, 19, 60-65
  2. Won YJ, Yoon CY, Seo IW, Nam HS, Lee DM, Park DH, Lee HM, Kim SS, Lee KY (2002) The study for the occurrence of food poisoning bacteria in organic vegetables. Annu Rep KFDA, 6, 521
  3. Seo JE, Lee JK, Oh SW, Koo MS, Kim YH, Kim YJ (2007) Changes of microorganisms during fresh-cut cabbage processing: Focusing on the changes of air-borne microorganisms. J Fd Hyg Safety, 22, 288-293
  4. Itoh Y, Sugita-Konishi Y, Kasuage F, Iwai M, HaraHudo Y, Saito N, Noguchi Y, Konuma H, Kumagai S (1998) Enterohomorrhagic Esherichia coli O157:H7 present in radish sprouts. Appl Environ Microbiol, 64, 1352-1355
  5. Song JH, Choi YJ, Rang HM, Lee KK (2009) Quantitative microbial risk assessment of non-thermal processed japanese foods using monte carlo simulation. Food Eng Progr, 13, 56-63
  6. Park HO, Kim CM, Wo GJ, Park SH, Lee DH, Chang EJ, Park KH (2001) Monitoring and trends analysis of food poisoning outbreaks occurred in recent years in Korea. J Fd Hyg Safety, 16, 280-294
  7. KFDA (2009) Data on emergence of food poisoning in recent 5 years (2004-2008)
  8. Lee EH, Jang KI, Bae IY, Lee HG (2011) Antibacterial effects of leek and garlic juice and powder in a mixed strains system. Korean J Food Sci Technol, 43, 518-523
  9. Kim MS, Kim MH, Kim MY, Son CW, Lim SK, Kim MR (2009) Microbiological hazard analysis of commercial side dished purchased from traditional markets and supermarkets in Daejoen. Korean J Soc Food Cookery Sci. 25, 84-89
  10. Kim HJ, Kim HY, Ko SH (2007) Applying the disnfecting effects of vinegar to raw vegetables in foodservice operations: A focused microbiological quality evaluation. Korean J Soc Food Cookery Sci, 23, 567-578
  11. Choi JW, Park SY, Yeon JH, Lee MJ, Jeong DH, Lee KH, Kim MG, Lee DH, Kim KS, Ha SD (2005) Microbial contamination levels of fresh vegetables distributed in market. J Fd Hyg Safety, 20, 43-47
  12. KFDA (2009) Korean food standard codex
  13. Kim HK, Lee HT, Kim JH, Lee SS (2008) Analysis of microbiological contamination in ready-to-eat foods. J Fd Hyg Safety, 23, 285-290
  14. Hong CK, Seo YH, Choi CM, Hwang IS, Kim MS (2012) Microbial quality of fresh vegetables and fruits in Seoul, Korea J Fd Hyg Safety, 27, 24-29
  15. Kang YS, Yoon SK, Jwa SH, Lee DH, Woo GJ, Kim CM, Park YS (2002) Prevalence of Staphylococcus aureus in Kimbap. J Fd Hyg Safety, 17, 31-35
  16. Jo MJ, Jeong AR, Kim HJ, Lee N, Oh SW, Kim YJ, Chun HS, Koo M (2011) Microbiological quality of fresh cut produce and organic vegetables. Korean J Food Sci Technol, 43, 91-97
  17. Jung HJ, CHo JI, Park SH, Ha SE, Lee KH, Kim CH, Song HS, Chung DH, Kim MG, Kim KY, Kim, KS (2005) Genotypic and phenotypic characteristics of Staphylococcus aureus isolates from lettuces and raw milk. Korean J Food Sci Technol, 37, 134-141

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