Shigella sonnei ATCC 29930의 아치사 가열 후소금 농도에 따른 회복 정도 비교
- Authors
- 정혜진; 박성희; 송은섭; 박성수; 김근성
- Issue Date
- 2006
- Publisher
- 한국식품과학회
- Citation
- 한국식품과학회지, v.38, no.5, pp 720 - 723
- Pages
- 4
- Journal Title
- 한국식품과학회지
- Volume
- 38
- Number
- 5
- Start Page
- 720
- End Page
- 723
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/29768
- ISSN
- 0367-6293
- Abstract
- The viability of Shigella sonnei, a significant cause of gastroenteritis in Korea, on TSA plates was determined
after sublethal heating treatments and NaCl treatments. In addition, recovery levels of sublethally injured cells on TSA
plates containing different concentrations of NaCl (TSAS) were investigated. The viability decreased significantly with
increasing degree of sublethal heating treatments, but increases in NaCl treatment concentration from 0 to 6% had little
effect on the viability. After being sublethally treated at 55oC for 30 min, bacterial populations were reduced by 7.58, 7.83
and 7.93 log CFU/mL on 2, 4, and 6% TSAS, respectively. After being sublethally treated at 60oC for 30 min, bacterial
populations were reduced by 6.71, 6.73, and 6.73 log CFU/mL on 2, 4 and 6% TSAS, respectively. Decimal reduction
times (D-values) decreased with increasing NaCl treatment concentrations after sublethal heating at 55 or 60oC. These data
imply that the S. sonnei cells sublethally injured by insufficient heating processes had a lower recovery rate with increasing
NaCl concentrations in the recovery media.
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