Assessment of Bacterial Contamination and Antibiotic Resistance Patterns among Escherichia coli in Finfishes of Kolkata, India
Assessment of Bacterial Contamination and Antibiotic Resistance Patterns among Escherichia coli in Finfishes of Kolkata, India
Date
2014
Authors
Ezung, Rulanthung
Abraham, T. Jawahar
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)Cochin
Abstract
Bacterial contamination and safety of finfishes of
commercial importance and the frequency of antibiotic
resistance in Escherichia coli in fishes of Kolkata
retail markets were evaluated. Finfishes available in
the retail markets recorded high levels of total viable
counts (4.30-7.93 log cfu g-1), coliforms (1.60-4.38 log
MPN g-1), faecal coliforms (£4.38 log MPN g-1) and
E. coli (£4.04 log MPN g-1). Majority of the E. coli was
resistant to oxytetracycline (73%) and exhibited
multiple antibiotic resistance (52%). Mutation frequencies
to oxytetracycline were higher (1.3x10-9–
7.3x10-4) compared to chloramphenicol (4.6x10-8–
6.8x10-8). Seven serotypes were recorded, of which
O-type 95 was the most common. Shiga-like toxinproducing
E. coli serotypes such as O2, O22 and
O114 were recorded. The results revealed that most
of the commercially important fishes did not meet
the national and international quality standards and
were contaminated with antibiotic resistant and
shiga-like toxin-producing E. coli, which represent a
health risk to the consumers.
Description
Keywords
Food safety, faecal contamination, bacterial quality, antibiotic resistance, shiga-like toxin producing Escherichia coli, mutation frequency
Citation
Fishery Tech 51 (3) : 199 - 206