Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/41596
Title: Frequency and behavior of salmonella and escherichia coli on whole and sliced jalapeño and serrano peppers
Author: Castro-Rosas, J.
Gómez-Aldapa, C.A.
Acevedo-Sandoval, O.A.
Ramírez, C.A.G.
Villagómez-Ibarra, J.R.
Hernández, N.C.
Villarruel-Lopez, A.
Torres-Vitela, M.D.R.
Issue Date: 2011
Abstract: The frequencies of coliform bacteria (CB), thermotolerant coliforms (TC), Escherichia coli, and Salmonella were determined for jalapeño and serrano peppers. In addition, the behavior of four serotypes of Salmonella and three E. coli strains on whole and sliced jalapeño and serrano peppers as well as in blended sauce at 25 2°C and 3 to 5°C was investigated. Chili peppers were collected from markets in the city of Pachuca, Hidalgo, Mexico. CB, TC, E. coli, and Salmonella were detected on serrano peppers in 100, 90, 50, and 10% of the samples, and on jalapeño peppers in 100, 86, 32, and 12% of the samples. Concentrations of CB ranged from 3.8 to 7.9 log CFU per serrano sample and from 5.3 to 8.2 log CFU per jalape�o sample, whereas concentrations of TC and E. coli were between <3 and 1,100 most probable number per serrano and jalape�o samples. On whole serrano and jalapeño peppers stored at 25 2°C and 3 to 5°C, no growth was observed for rifampin-resistant strains of Salmonella and E. coli. After 6 days at 25 2°C, the tested Salmonella serotypes and E. coli strains had decreased from an initial inoculum level of 5 log CFU to 1 and 2.5 log on serrano and jalapeño peppers, respectively, and at 3 to 5°C they decreased to approximately 1.8 and 1.2 log, respectively, on serrano and jalapeño. Both the Salmonella serotypes and E. coli grew on sliced chili peppers and in blended sauce; after 24 h at 25 2°C, both bacteria types had grown to approximately 4 and 5 log CFU on pepper slices and in sauce, respectively. At 3 to 5°C the bacterial growth was inhibited. Copyright International Association for Food Protection.
URI: http://www.scopus.com/inward/record.url?eid=2-s2.0-79958138865&partnerID=40&md5=936f3ca9a340fdafab0a2a653669e39b
http://hdl.handle.net/20.500.12104/41596
Appears in Collections:Producción científica UdeG

Files in This Item:
There are no files associated with this item.


Items in RIUdeG are protected by copyright, with all rights reserved, unless otherwise indicated.