Enteropathogenic E. coli and other coliforms in marine fish

One hundred and twenty six samples of marine fish (96 from landing centre and 30 from retail market) and swabs from deck surfaces of 34 fishing boats were examined for coliforms including enteropathogenic E. Coli. Forty out of 96 fish samples from landing centre, 24 out of 30 from retail market and 11 out of 34 fishing boats revealed coliforms. On further tests, 5, 7 and 4 coliform isolates from the three groups respectively were found to be E. coli. Two of the E. coli. isolated, one from sciaenids and one from cat fish, were found to be enteropathogenic serotypes 055 and 0111. Enteropathogenic serotypes of E. coli are reported from sciaenids and cat fish for the first time in this country

Change in quality of different variety of fish during long distance transportation

A study was conducted to investigate the quality of iced fish of different species during long distance transportation. Total bacterial counts showed different species to show different quality deterioration under similar handling conditions

Antibiotic sensitivity of Staphylococcus aureus strains isolated from fishery products

During the course of an investigation on the incidence of Staphylococcus aureus contamination in frozen crab meat, frozen prawns and dried fishes from Cochin, 116 strains of S. aureus were isolated. The sensitivity of the isolated strains towards nine antibiotics showed that all the S. aureus strains were sensitive to kanamycin and streptomycin (100%). Sensitivity to other antibiotics like chloramphenicol, polymyxin-B, erythromycin, tetracycline, neomycin, penicillin and ampicillin were shown by 98.28, 93.10, 87.93, 68.10, 67.24, 56.90 and 55.17 percent of the isolates respectively

The effect of increase in the number of fishing trips on the economic efficiency of 9.82 m and 11 m fishing trawlers along Kerala coast

Cost-benefit analysis of a 9.82 m and 11 m fishing trawlers based on the number of fishing trips is presented. The number of fishing trips per year determines the profit and loss of the trawler. With the increase in the number of fishing trips, the profit also increase for both the sizes of trawlers. The minimum quantity of prawn and fish to be landed for 0-20% profit for varying number of fishing trips are worked out. The break-even for 9.82 and 11m trawlers was observed to be 185 and 210 fishing trips respectively during 1980-81

Occurrence of enterotoxigenic staphylococci in frozen fishery products

Sixty six samples of frozen fishery products consisting of frozen crab meat, frozen prawns, frozen cuttlefish and frozen mussel collected from nine cold stores situated in and around Cochin city were examined for coagulase positive staphylococci. Forty eight samples (72.72%) revealed the presence of coagulase positive staphylococci, which were then tested for enterotoxigenity, employing cellophane-over-agar method for toxin production and optimum-sensitivity-plate (OSP) method for toxin detection. Seventy seven out of one hundred and two (75.49%) coagulase positive staphylococcal isolates from the above products produced enterotoxins A, B, C, D and E either singly or in combinations. Enterotoxin A and D were detected more often than others. The occurrence of enterotoxigenic staphylococci in frozen fishery product is reported for the first time in this country

Quality of certain ready-to-eat fish products of the domestic trade

Quality of 181 samples of ready-to-eat fish products comprising fried fish, fish curry and fish/prawn pickles collected from Cochin and Calicut were studied. Salmonella was absent in all the samples. V. cholerae was tested in the samples collected at Cochin and was absent in all the cases. Coliforms, E. coli, faecal streptococci and coagulase-positive staphylococci were present in some of the samples studied. The study indicated the necessity to improve the sanitary and hygienic conditions of the hotels engaged in the preparation of these products. The study further indicated that fried fish and fish curry shall not be served after 6 hours of their preparation. Added care is to be exercised in the selection of shrimps and fish for the preparation of pickles

Comparative study of traditional and improved containers for transportation of fresh fish

Traditional bamboo basket and expanded polystyrene insulated plywood box (second hand tea-chest) were compared for transportation of iced marine, fresh water and brackish water fishes from Kakinada to Madras by rail. Quality of fish at dispatching and receiving centres was assessed by organoleptic, total volatile nitrogen (TVN) and total bacterial count (TBC) tests. Based on the results obtained and the prices fetched, the traditional bamboo basket apart from being cheaper was found to be as good as expanded polystyrene insulated plywood box for short distance transportation of iced fish involving less than 24 hours journey

Not Available

Not AvailableOccurence of motile aeromonads, Aeromonas hydrophila, A.caviae and A. sobria in murrels (Channa striata) affected with Epizootic Ulcerative Syndrome is reported. API 20 NE was found useful with additional confirmatory tests in identification of aeromonads. All three Aeromonas spp. were found sensitive to bacitracin, chloramphenicol, chlortetracycline and tetracycline at 10, 30, 30 and 30 microgram per disc, respectively. The same isolates showed difference in their sensitivity to kanamycin, polymyxin-B and oxytetracycline. The top sediment layer samples collected from different ponds were found to contain aeromanads in the range 2 to 5 log CFU per gram of the sampleNot Availabl

Not Available

Not AvailableThe Visakhapatnam Research Centre (formerly Kakinada Research Centre) of Central Institute of Fisheries Technology (CIFT) is engaged in the development of different preservation and processing methods to maximize utilization of fish and minimize post-harvest lossesNot Availabl