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- ItemInactivation kinetics of different flexible packing materials for decontamination of yellowfin tuna Thunnus albacares using pulsed light technology(Indian Council of Agricultural Research (ICAR), 2022-01-07)Comparative efficiency of three different packing materials for post-packaging decontamination of yellowfin tuna Thunnus albacares steaks using pulsed light (PL) technology was investigated during the study. The packing materials used were 300 gauge low density polyethylene (LDPE), 12 μ polyester 300 guage polyethylene (PEST/PE) and 300 gauge cast polypropylene (CPP). Inactivation curves were plotted separately for each material for pulsed light exposure time ranging from 0 to 12 s. The curves were fitted with three different models viz, (i) log-linear, (ii) log-linear with Geeraerd and (iii) log-linear with Weibull model and corresponding goodness-of-fit statistics were estimated. Considering the least treatment time for achieving log microbial reduction, CPP was found to be the ideal choice among the three packaging materials. Among the three models, considering the lowest root-mean-square error values (0.0291, 0.0210 and 0.0141 for samples packed in LDPE, PEST/PE and CPP respectively), Weibull model was found to be most appropriate for describing the inactivation curves in all sample cases. Therefore, inactivation curves of steaks packed in CPP was validated with the Weibull model. The corresponding root-mean-square error (0.1036) and correlation coefficient (0.9974) showed that this model can be effectively utilised for modelling the microbial inactivation kinetics using pulsed light technology.
- ItemStudies on Indian fishmeals(Indian Council of Agricultural research, 1962)Fishmeal is highly valued in cattle and poultry nutrition for its content of easily digestible proteins, vitamins and minerals. Extensive experiments on the chickfeeds containing fishmeal registered a better growth response when compared with other feeds. The total world production of fishmeal is estimated at more than 2 million metric tons. The major producing countries are Peru, United states of America, Angola, South Africa, Norway, Denmark, and Iceland. Until recently the production and consumption in India is not significant. At present two plant are producing fishmeals for cattle and poultry feeds on a commercial scale with heat treatment.
- ItemStudies on ice-stored prawns(Indian Council of Agricultural research, 1962)Icing of prawn is a very important step for maintaining good quality of the material. Prawns should be beheaded and stored well-iced immediately after they are taken out of water and should be maintained in this condition until processed in the factories. This may involve a couple of days to a week's storage in ice according to the conditions. During storage of prawns in ice, many changes take place in the muscle of prawns and attempts have been made by many workers to follow and make use of these changes to assess the quality of the ice stored prawns. The paper studied the whole part of ice stored prawns related with the quality of the same.
- ItemStorage behaviour of salted and dried fish in relation to humidity conditions(Indian Council of Agricultural research, 1962)Humidity conditions play important role in governing the storage life of cured fish products, since mould growth and red halophile attack depend on the moisture content of the product which varies with changes in relative humidity (RH). An additional factor is contributed by salt, if used for curing, which by lowering the equilibrium vapour pressure in fish muscle to 76 per cent. RH helps the products to absorb moisture, when the humidity is above this level. The paper is focus on the storage characteristics dried cured fish and reveals the relation of relative humidity.
- ItemUtilisation of waste materials in frogleg processing industry(Indian Council of Agricultural research, 1963)During recent years the export of frozen frog legs from Kerala and Maharashtra has increased to a great extent. Large quantities of waste materials at present being thrown into sea. In the year of 1963 roughly over 500 metric tons of frozen frog legs were exported to USA, France and other places in the Continent valued at nearly 33 lakhs of rupees. Due to the decreasing trends of prices in the international market there is a little bit profit in the industry. Utilization of waste materials in the processing of frog legs is of immense value to compensate the processing expenses to a certain extent. With this object in view the waste materials which constitute about 65% of the total weight of the raw material were processed into meal and oil and studied the chemical composition.