Premium
Sensitivity of Pseudomonas Strains to Polyphosphates in Media Systems
Author(s) -
ZESSIN K. G.,
SHELEF L. A.
Publication year - 1988
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1988.tb07787.x
Subject(s) - pseudomonas , pyrophosphate , chemistry , strain (injury) , polyphosphate , food science , brain heart infusion , sodium hexametaphosphate , microbiology and biotechnology , tryptic soy broth , microorganism , filter paper , sodium , phosphate , bacteria , agar , biochemistry , chromatography , biology , enzyme , organic chemistry , genetics , anatomy
Of 13 gram positive and 12 gram negative microorganisms studied in nutrient broth (NB) containing 0.5% sodium salts of three polyphosphates, inhibition showed in seven strains of the former and only three of the latter. In an examination of sixteen Pseudomonas strains in NB, brain heart infusion (BHI) and trypticase soy broth (TSB) at 25°C and pH 7.0, tripoly‐ and hexametaphosphate were more effective inhibitors than pyrophosphate; the degree of inhibition was strain‐dependent. Antibacterial activities were highest in the low‐protein low‐mineral media and were more pronounced when the compounds were filter‐sterilized rather than heat‐sterilized.