ISSN:
1745-4514
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Microorganisms (Aeromonas hydrophila, Bacillus megaterium, Pseudomonas marinoglutinosa and Salmonella typhimurium) proliferated equally well when incubated in unirradiated and irradiated fish myofibrillar protein fractions. However, formation of Total Volatile Bases was found to be 50–60% less in the irradiated myofibrillar protein fraction. Proteolysis measured in terms of tyrosine release also registered 50% less in irradiated flesh foods as compared to unirradiated samples under identical conditions. Bacterial protease levels were also evaluated after growth in both control and irradiated fish proteins using hemoglobin as substrate which revealed that there is considerable reduction in protease secretion when the bacterium proliferated in irradiated fish proteins. These results suggest that appreciable delay in the spoilage of irradiated flesh foods could be attributed to low bacterial proteolysis.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1745-4514.1993.tb00484.x
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