IDENTIFICATION OF DRUG-RESISTANT BACTERIA AMONG EXPORT QUALITY SHRIMP SAMPLES IN BANGLADESH

Abstract

Present study attempted to detect the pathogenic load in export quality shrimp samples and to demonstrate the drug resistance traits of the pathogenic isolates. Samples were found to be contaminated with Listeria spp. (1.0×10 5 cfu/g), Staphylococcus aureus (9.1×10 6 cfu/g) and Escherichia coli (1.0×10 3 cfu/g). Study of antibiogram revealed that Listeria spp. was resistant against penicillin G and ampicillin, S. aureus against trimethoprim, erythromycin, sulfamethoxazole, and Escherichia coli against erythromycin and polymixin B. However, all the isolates were found to be susceptible against tetracycline, and most of them also exhibited a greater degree of susceptibility towards amoxicilin, ceftriaxone, ciprofloxacine, streptomycin, chloramphenicol and cefixime. The antibacterial activity of the shrimp blend was also examined. Interestingly, the head and body portions of the shrimp samples exhibited antibacterial activity against Staphylococcus spp. and Listeria spp.