Growth potential of Salmonella spp. and Listeria monocytogenes in nine types of ready-to-eat vegetables stored at variable temperature conditions during shelf-life

International Journal of Food Microbiology
Anderson S Sant'AnaBernadette D G M Franco

Abstract

Growth potential (δ) is defined as the difference between the population of a microorganism at the end of shelf-life of specific food and its initial population. The determination of δ of Salmonella and Listeria monocytogenes in RTE vegetables can be very useful to determine likely threats to food safety. However, little is known on the behavior of these microorganisms in several RTE vegetables. Therefore, the aim of this study was to determine the δ of both pathogens in nine different types of RTE vegetables (escarole, collard green, spinach, watercress, arugula, grated carrot, green salad, and mix for yakisoba) stored at refrigeration (7°C) and abuse temperature (15°C). The population of aerobic microorganisms and lactic acid bacteria, including those showing antimicrobial activity has been also determined. Results indicated that L. monocytogenes was able to grow (δ≥0.5 log(10)) in more storage conditions and vegetables than Salmonella. Both microorganisms were inhibited in carrots, although a more pronounced effect has been observed against L. monocytogenes. The highest δ values were obtained when the RTE vegetables were stored 15°C/6days in collard greens (δ=3.3) and arugula (δ=3.2) (L. monocytogenes) and arugula (δ=4.1) an...Continue Reading

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Jun 8, 2011·Food Microbiology·Anderson S Sant'AnaBernadette D G M Franco

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Citations

Sep 13, 2013·Current Microbiology·L Caldera, L Franzetti
Feb 10, 2016·Foodborne Pathogens and Disease·Susana de Oliveira EliasEduardo Cesar Tondo
Aug 12, 2015·Australian and New Zealand Journal of Public Health·Aparna LalNigel P French
Jul 15, 2016·Journal of Food Science and Technology·Adriele R SantosJane M G Mikcha
Jul 10, 2016·International Journal of Food Microbiology·Ana Carolina B RezendeAnderson S Sant'Ana
Jan 1, 2014·BMC Microbiology·Flávio KrzyzanowskiMaria Tereza Pepe Razzolini
Jan 14, 2020·Journal of Food Protection·Sophia C PintonLaura Kathryn Strawn
Sep 3, 2020·EFSA Journal·UNKNOWN EFSA Panel on Biological Hazards (BIOHAZ)Ana Allende

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