Electronic Resource
Oxford, UK
:
Blackwell Publishing Ltd
Journal of rapid methods and automation in microbiology
6 (1998), S. 0
ISSN:
1745-4581
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
H2S bacteria of seafish flesh are weakly halophilic and require on average 1.68% NaCl according to statistical studies. Enumeration is optimal on PCA-H2S(a PCA medium supplemented with sulfur sources and increased NaCl concentrations) incubated at 25C. Total aerobic bacteria can be counted simultaneously on this medium. The proportion of H2S bacteria relative to total aerobic bacteria increased slightly during prolonged storage of the fish, but was highly variable. Models relating H2S bacterial counts to spoilage of fish are sigmoidal and showed that when the count exceeds 10,000 CFU/g, whole or filleted fish stored in ice at 0C are unfit for consumption. Shewanella putrefaciens accounted for 69% of the H2S bacteria at the fifth day of storage and 100% at the fifteenth.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1745-4581.1998.tb00193.x
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