title: Effect of sodium chloride and citric acid on growth and toxin production by A. caviae and A. sobria at moderate and low temperatures.
abstract: The effect of sodium chloride and citric acid on hemolysin and caseinase production by Aeromonas caviae and Aeromonas sobria at 32 degrees C and 5 degrees C was investigated. At 32 degrees C, although both strains were tolerant to 3% NaCl in TSB, the production of caseinase was decreased in the presence of 1-3% NaCl, and the production of hemolysin was abolished by 2-3% NaCl. Citric acid (0.03%) was less effective than NaCl in reducing hemolysin and caseinase production by both strains at 32 degrees C. A combination of low temperature (5 degrees C) and citric acid treatment reduced hemolysin and caseinase production by both strains. A combination of low temperature (5 degrees C) and NaCl (3%) treatment was the most effective procedure in reducing growth and hemolysin and caseinase production by the tested strains.
authors.affiliation: Department of Biology, Hashemite University, Zarqa, Jordan.
authors.forename: B M
authors.initials: BM
authors.lastname: Abu-Ghazaleh
mesh_terms: D000333:Aeromonas / Q000187:drug effects* / Q000472:pathogenicity; D001427:Bacterial Toxins / Q000096:biosynthesis*; D019343:Citric Acid / Q000494:pharmacology*; D003080:Cold Temperature; D005519:Food Preservation; D005517:Foodborne Diseases / Q000382:microbiology; D006460:Hemolysin Proteins / Q000096:biosynthesis; D006358:Hot Temperature; D008666:Metalloendopeptidases / Q000096:biosynthesis; D012965:Sodium Chloride / Q000494:pharmacology*
chemical_list: D001427:Bacterial Toxins; D006460:Hemolysin Proteins; D019343:Citric Acid; D012965:Sodium Chloride; D008666:Metalloendopeptidases; C030895:caseinase