Journal
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
Volume 52, Issue 12, Pages 8236-8243Publisher
SPRINGER INDIA
DOI: 10.1007/s13197-015-1922-0
Keywords
Salmonella Enteritidis; Dressed chicken skin; Acidified sodium chlorite; Trisodium phosphate; Thermal inactivation; Food safety
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Funding
- Department of Biotechnology (DBT), Govt. of India
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Thermal inactivation of normal and starved cells of Salmonella Enteritidis on chicken skin previously exposed to different concentrations of acidified sodium chlorite (ASC) or tri-sodium phosphate (TSP) was investigated. Inoculated skin was pretreated with different concentration of ASC or TSP, packaged in bags, and then immersed in a circulating water bath at 60 to 68 A degrees C. The recovery medium was Hektoen enteric agar. D-values, determined by linear regression, for normal cells on chicken skin, were 2.79, 1.17 and 0.53 min whereas D-values for starved cells were 4.15, 1.83 and 0.66 at 60, 64 and 68 A degrees C, respectively. z-values for normal cells were 3.54 and for starved cells were 2.29. Pretreatment of Salmonella Enteritidis cells with 0 to 200 ppm of ASC or 0 to 1.0 % TSP resulted in lower D-values at all temperatures. Sensory results indicated no significance differences for control and treatments. Thus, results of this study indicated that pretreatment of chicken skin with ASC or TSP increased sensitivity of Salmonella Enteritidis to heat without affecting organoleptic quality of chicken meat.
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