Today's fish industry is facing new challenges that require
intensive controls during their processing, storage or
distribution. Farmed Bolti fish (Oreochromis niloticus) is highly
adaptable kind preferred by most classes of people. Wide study on
selected antimicrobials and antioxidants individually or in
mixtures using of E. coli O157:H7 in vitro was carried out. Fish
was divided, treated then kept at either 3+1C or -18+1 until they
were organolyptically rejected. During subsequent storage, chemical
composition, freshness tests, physical and microbiological
properties and sensory evaluation for untreated and treated fish
were investigated. Obtained results indicated that E. coli O157:H7
was significantly affected and low detectable count after 3 days
was found. The shelf- life of treated Bolti fish was extended 5 and
11 days for un-eviscerated and eviscerated refrigerated fish,
respectively. The shelf-life stability could be prolonged 2 months
for frozen fish. Finally, our investigation recommends that using
this handling system could be a promising facility for improving
the shelf-life stability of refrigerated or frozen farmed Bolti
fish.
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