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Behavior of Non-O157 Shiga Toxin–Producing Escherichia coli, Enteroinvasive E. coli, Enteropathogenic E. coli, and Enterotoxigenic E. coli Strains on Alfalfa Sprouts
- Source :
- Journal of Food Protection. 76:1429-1433
- Publication Year :
- 2013
- Publisher :
- Elsevier BV, 2013.
-
Abstract
- Data about the behavior of non-O157 Shiga toxin-producing Escherichia coli (non-O157 STEC), enteroinvasive E. coli (EIEC), enterotoxigenic E. coli (ETEC), and enteropathogenic E. coli (EPEC) on seeds and alfalfa sprouts are not available. The behavior of STEC, EIEC, ETEC, and EPEC was determined during germination and sprouting of alfalfa seeds at 20 ± 2°C and 30 ± 2°C and on alfalfa sprouts at 3 ± 2°C. When alfalfa seeds were inoculated with STEC, EIEC, ETEC, or EPEC strains, all these diarrheagenic E. coli pathotypes (DEPs) grew during germination and sprouting of seeds, reaching counts of approximately 5 and 6 log CFU/g after 1 day at 20 ± 2°C and 30 ± 2°C, respectively. However, when the sprouts were inoculated after 1 day of seed germination and stored at 20 ± 2°C or 30 ± 2°C, no growth was observed for any DEP during sprouting at 20 ± 2°C or 30 ± 2°C for 9 days. Refrigeration reduced significantly (P < 0.0.5) the number of viable DEPs on sprouts after 20 days in storage; nevertheless, these decreases have no practical significance for the safety of the sprouts.
- Subjects :
- Food Handling
Germination
Biology
Escherichia coli O157
medicine.disease_cause
Enteroinvasive E. coli
Microbiology
Non o157
Enterotoxigenic E. coli
Enteropathogenic Escherichia coli
Vegetables
Escherichia coli
medicine
Enterotoxigenic Escherichia coli
Humans
Food microbiology
Shiga-Toxigenic Escherichia coli
Inoculation
food and beverages
biochemical phenomena, metabolism, and nutrition
bacterial infections and mycoses
Consumer Product Safety
Seeds
Food Microbiology
cardiovascular system
Medicago sativa
Food Science
Sprouting
Subjects
Details
- ISSN :
- 0362028X
- Volume :
- 76
- Database :
- OpenAIRE
- Journal :
- Journal of Food Protection
- Accession number :
- edsair.doi.dedup.....a1d217e97f872b0d55cc1fd3820e2179