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Presence of some indicator bacteria and diarrheagenic E. coli pathotypes on jalapeño and serrano peppers from popular markets in Pachuca City, Mexico



Presence of some indicator bacteria and diarrheagenic E. coli pathotypes on jalapeño and serrano peppers from popular markets in Pachuca City, Mexico



Food Microbiology 32(2): 444-447



The chili pepper is a very important crop in Mexico. Diarrheagenic E. coli pathotypes (DEPs) are important foodborne pathogens in different countries including Mexico. No data exists on DEPs presence on fresh jalape o and serrano pepper and little data have been published on the microbiological quality of these peppers. The frequencies of coliform bacteria (CB), thermotolerant coliforms (TC), E. coli and DEPs were determined for jalape o and serrano peppers. Of 100 serrano samples, CB, TC, E. coli and DEPs were identified in 100, 90, 58 and 36%, respectively. Of 100 jalape o samples, CB, TC, E. coli and DEPs were identified in 100, 88, 38 and 14%, respectively. Identified DEPs included enterotoxigenic E. coli (ETEC) and Shiga toxin-producing E. coli (STEC). STEC were isolated from 36% of serrano samples and 14% of jalape o samples. ETEC were isolated from 12% of serrano samples and 2% of jalape o samples. Both STEC and ETEC were identified in 14 serrano samples and 2 jalape o samples. No E. coli O157:H7 were detected in any STEC-positive samples. Jalape o and serrano peppers could be an important factor contributing to the endemicity of DEPs-caused gastroenteritis in Mexico. No data exists about Diarrheagenic E. coli pathotypes (DEP) presence on chili peppers. The presence of enteric indicator bacteria and DEP on chili peppers was quantified. The tested jalape o and serrano peppers had poor microbiological quality. DEP were isolated from 36% of serrano and 14% of jalape o samples. Identified DEP were enterotoxigenic E. coli and Shiga-toxin producing E. coli..

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Accession: 036578277

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PMID: 22986213

DOI: 10.1016/j.fm.2012.07.012



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