TY - JOUR
T1 - Presence of some indicator bacteria and diarrheagenic E. coli pathotypes on jalapeño and serrano peppers from popular markets in Pachuca City, Mexico
AU - Cerna-Cortes, Jorge F.
AU - Gómez-Aldapa, Carlos A.
AU - Rangel-Vargas, Esmeralda
AU - Torres-Vitela, M. del Refugio
AU - Villarruel-López, Angélica
AU - Castro-Rosas, Javier
N1 - Funding Information:
This work was supported by Programa de Mejoramiento del Profesorado de la Secretaria de Educación Pública (PROMEP-SEP) , Mexico; grant 2003 (Comportamiento e identificación de bacterias patógenas mediante PCR y cultivo tradicional a partir de ensaladas y licuados de verduras crudas listas para su consumo) and grant 2008 (Redes Temáticas de Colaboración, red de inocuidad alimentaria).
PY - 2012/12
Y1 - 2012/12
N2 - 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 jalapeño 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 jalapeño and serrano peppers. Of 100 serrano samples, CB, TC, E. coli and DEPs were identified in 100, 90, 58 and 36%, respectively. Of 100 jalapeño 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 jalapeño samples. ETEC were isolated from 12% of serrano samples and 2% of jalapeño samples. Both STEC and ETEC were identified in 14 serrano samples and 2 jalapeño samples. No E. coli O157:H7 were detected in any STEC-positive samples. Jalapeño and serrano peppers could be an important factor contributing to the endemicity of DEPs-caused gastroenteritis in Mexico.
AB - 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 jalapeño 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 jalapeño and serrano peppers. Of 100 serrano samples, CB, TC, E. coli and DEPs were identified in 100, 90, 58 and 36%, respectively. Of 100 jalapeño 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 jalapeño samples. ETEC were isolated from 12% of serrano samples and 2% of jalapeño samples. Both STEC and ETEC were identified in 14 serrano samples and 2 jalapeño samples. No E. coli O157:H7 were detected in any STEC-positive samples. Jalapeño and serrano peppers could be an important factor contributing to the endemicity of DEPs-caused gastroenteritis in Mexico.
KW - Chili peppers
KW - Diarrheagenic E. coli pathotypes
KW - Escherichia coli
KW - Jalapeño
KW - STEC
KW - Serrano
UR - http://www.scopus.com/inward/record.url?scp=84866302880&partnerID=8YFLogxK
U2 - 10.1016/j.fm.2012.07.012
DO - 10.1016/j.fm.2012.07.012
M3 - Artículo
C2 - 22986213
SN - 0740-0020
VL - 32
SP - 444
EP - 447
JO - Food Microbiology
JF - Food Microbiology
IS - 2
ER -