Effectiveness of radiation processing for elimination of Salmonella Typhimurium from minimally processed pineapple (Ananas comosus Merr.) |
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Authors: | Shashidhar Ravindranath Dhokane Varsha S Hajare Sachin N Sharma Arun Bandekar Jayant R |
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Affiliation: | Authors are with Food Technology Div., Bhabha Atomic Research Centre, Mumbai 400 085, India. Direct inquiries to author Bandekar (E-mail: ). |
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Abstract: | ABSTRACT: The microbiological quality of market samples of minimally processed (MP) pineapple was examined. The effectiveness of radiation treatment in eliminating Salmonella Typhimurium from laboratory inoculated ready-to-eat pineapple slices was also studied. Microbiological quality of minimally processed pineapple samples from Mumbai market was poor; 8.8% of the samples were positive for Salmonella. D10 (the radiation dose required to reduce bacterial population by 90%) value for S. Typhimurium inoculated in pineapple was 0.242 kGy. Inoculated pack studies in minimally processed pineapple showed that the treatment with a 2-kGy dose of gamma radiation could eliminate 5 log CFU/g of S. Typhimurium. The pathogen was not detected from radiation-processed samples up to 12 d during storage at 4 and 10 °C. The processing of market samples with 1 and 2 kGy was effective in improving the microbiological quality of these products. |
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Keywords: | pineapple radiation processing Salmonella Typhimurium |
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