title: Effectiveness of radiation processing for elimination of Salmonella Typhimurium from minimally processed pineapple (Ananas comosus Merr.).
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. D(10) (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 degrees C. The processing of market samples with 1 and 2 kGy was effective in improving the microbiological quality of these products.
authors.affiliation: Food Technology Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
authors.forename: Ravindranath
authors.initials: R
authors.lastname: Shashidhar
authors.forename: Varsha S
authors.initials: VS
authors.lastname: Dhokane
authors.forename: Sachin N
authors.initials: SN
authors.lastname: Hajare
authors.forename: Arun
authors.initials: A
authors.lastname: Sharma
authors.forename: Jayant R
authors.initials: JR
authors.lastname: Bandekar
mesh_terms: D031230:Ananas / Q000382:microbiology* / Q000528:radiation effects; D015169:Colony Count, Microbial; D003257:Consumer Product Safety; D004307:Dose-Response Relationship, Radiation; D005506:Food Contamination / Q000517:prevention & control*; D005511:Food Handling / Q000379:methods; D005514:Food Irradiation / Q000379:methods*; D005516:Food Microbiology; D005519:Food Preservation / Q000379:methods*; D005720:Gamma Rays; D012486:Salmonella typhimurium / Q000254:growth & development / Q000528:radiation effects*; D013649:Taste; D013696:Temperature; D013997:Time Factors