Distribution of Indicator Organisms in Commercial Fish and Shellfish and Influence of Storage Temperature and Period

시판 어패류에서의 오염지표세균의 분포와 저장 온도 및 저장 기간이 오염지표세균에 미치는 영향

  • 박석기 (서울특별시보건환경연구원) ;
  • 이용욱 (서울대학교보건대학원) ;
  • 김정현 (서울대학교보건대학원) ;
  • 이강문 (서울특별시보건환경연구원)
  • Published : 1996.03.01

Abstract

This paper intends to investigate commercial fish and shellfish 25 species (fish 8 species, shellfish 7 species, crustacean 3 species, moluse 4 species and echinodermata) for the distribution of sanitary indicator organisms (total viable counts, coliforms, staphylococci, vibrios, and enterococci) and distributional change of indicator organisms accordion to storage temperature and period. The logarithmic mean of total viable counts for total commercial fish and shellfish 25 species was 5.41$\pm$.026 CFU/g, and in accordance with fish and shellfishes, crustacean 6.76$\pm$0.67 CFU/g, shellfish 5.67$\pm$0.56 CFU/g, echinodermata 5.47$\pm$1.50 CFU/g, fish 5.02$\pm$0.38 CFU/g, and mollusc 5.03$\pm$0.65 CFU/g. The logarithmic mean of enterococci was 2.36$\pm$0.37 CFU/g, and in accordane with fish and shellfish, crustacean 3.44$\pm$2.12 CFU/g, shellfish 3.87$\pm$0.45 CFU/g, echinodermata 3.38$\pm$0.0 CFU/g, fish 2.16$\pm$0.41 CFU/g and mollusc 0.01$\pm$0.0 CFU/g. The logarithmic mean of vibrios was 1.60$\pm$1.59 CFU/g, and in accordance with fish and shellfish, crustacean 4.23$\pm$1.11 CFU/g, shellfish 3.58$\pm$0.90 CFU/g, echinodermata 1.64$\pm$0.34 CFU/g, fish 1.79$\pm$0.67 CFU/g and mollusc 1.07$\pm$0.61 CFU/g. The logarithmic mean of staphylococci was 1.60$\pm$1.59 CFU/g, and in accordance with fish and shellfish, shellfish 0.01$\pm$0.00 CFU/g, echinodermata 3.51$\pm$0.60 CFU/g, fish 1.68$\pm$0.64 CFU/g, crustacean 0.34$\pm$0.33 and mollusc 3.90$\pm$0.11 CFU/g. The logarithmic mean of coliformas was 2.52$\pm$0.32 CFU/g, and in accordance with fish and shellfish, echinodermata 3.58$\pm$1.89 CFU/g was highest, shellfish 3.25$\pm$0.30 CFU/g, crustacean 3.23$\pm$0.49 CFU/g, fish 2.18$\pm$0.63 CFU/g, peeled shellfish 1.80$\pm$0.51 CFU/g and mollusc 1.55$\pm$0.95 CFU/g. As the results of research of the change of the contaminate indicator microflora in working with storage period at 1$0^{\circ}C$, 2$0^{\circ}C$ and 3$0^{\circ}C$, total viable counts was increased without storage temperature and enterococci were decreased slowly at 1$0^{\circ}C$, but increased at 20 and 3$0^{\circ}C$. Vibrios were decreased slowly at 1$0^{\circ}C$, decreased at 2$0^{\circ}C$ and 3$0^{\circ}C$in 2 days after increased rapidly. Staphylococci were increased promptly without storage temperature in 2 days, then the total viable counts were maintained. Coliforms were increased at 1$0^{\circ}C$ by 7 days, then decreased or maintained after 14 days, changed at 2$0^{\circ}C$ in accordance with fish species in 2 days, then returned to the initial total viable count, and decreased rapidly at 3$0^{\circ}C$ on 2 days. By the way, there were no difference among the species.

Keywords