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HYGIENIZATION OF INDIAN CHICKEN MEAT BY IONIZING RADIATION
Author(s) -
KAMAT A. S.,
ALUR M. D.,
NERKAR D. P.,
NAIR P. M.
Publication year - 1991
Publication title -
journal of food safety
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 43
eISSN - 1745-4565
pISSN - 0149-6085
DOI - 10.1111/j.1745-4565.1991.tb00064.x
Subject(s) - salmonella , bacillus cereus , serotype , contamination , food science , cereus , inoculation , ionizing radiation , biology , microbiology and biotechnology , veterinary medicine , chemistry , bacteria , irradiation , medicine , ecology , genetics , physics , nuclear physics , immunology
Both fresh and frozen chicken meat were evaluated for microbiological status by screening for total bacterial counts and for the presence of pathogens like Enterobacteria , Bacillus cereus, coagulase positive Staphylococci and Salmonella spp. Most of the samples exhibited heavy bacterial contamination (1.2 × 10 5 ‐ 2.6 × 10 6 /g), mainly with Staphylococcus spp. (1.5 × 10 4 ‐ 2.8 × 10 5 /g). All the chicken samples also showed the presence of Salmonellae (3 × 10 1 ‐ 2.1 × 10 2 /g). Among the different serotypes observed in chickens . S. typhimurium was common in fresh as well as frozen chicken. Radicidation at 2 kGy at cryogenic conditions (−40°C) was efficient in eliminating the natural pathogenic contamination of the poultry . Salmonella spp. viz. S. seftenberg and S. typhimurium differed in radiation sensitivity, the D 10 values in phosphate buffer (pH 7.2) being 0.25 kGy and 0.12 kGy, respectively. Chicken homogenate (10%) offered approximately 2‐fold protection to these cells. Chicken samples artificially inoculated with a heavy inoculum (10 8 cells/g) of these 2 serotypes required higher gamma radiation doses of 4–5 kGy. The findings suggested that a dose of 2 kGy is adequate for normally contaminated chicken samples, but for the heavily contaminated chicken a dose of 4–5 kGy, depending upon the predominating Salmonella serotype present, is required .