Time Course of Growth and Protease Production by Spoilage Bacteria Under Different Culture Conditions
Time Course of Growth and Protease Production by Spoilage Bacteria Under Different Culture Conditions
Date
1995
Authors
Philip, Rosamma
Perumalsamy, P. Lakshmana
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)Cochin
Abstract
Four strains of proteolytic bacteria which were assessed as potential fish spoilers were
used for the study. They were Pseudomonas sp. Ca 173 isolated from Penaeus indicus,
Pseudomonas sp. Ca 386 from Metapemeus dobsoni, Vibrio sp. Ca 377 from Liza parsia and
Vibrio sp. Ca 761 from Penaeus indicus. The influence of pH, temperature and sodium
chloride concentrations on the growth and protease production of these bacterial isolates
were studied. The study shows that the requirements of the normal flora of fish and prawns
for maximum protease production are 30PC, neutral pH (7) and absence of NaCl. Moreover,
the protease production was observed at late logarithmic or early stationary phase. This
suggests that the inhibition of the bacterial growth in the late logarithmic or early stationary
phase will arrest the bacterial fish spoilage to some extent.
Description
Keywords
Spoilage bacteria, growth, protease production, culture conditions
Citation
Fishery Tech 32(1):45-49