FT Vol.28(2)

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    Effect of Ascorbic Acid Dip Treatment on Frozen Storage of Squid (Loligo duzzaucelii, Orbigny)
    (Society of Fisheries Technologists (India) Cochin, 1991) Selvaraj, P; Jasmine, G.Indira; ]eyachandran, P
    Squid (Loligo duvaucelii) was treated with 0.5% ascorbic acid solution for 10 min and both treated and control samples were frozen at -40°C and stored at -20°C The quality changts during frozen storage and shelf life were evaluated by following the physical, chemical, bacteriological and sensory characteristics. Ascorbic acid treatment was found to improve the quality and shelf life compared to control.
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    Combined Effect of Environmental Factors on Spoilage Bacteria
    (Society of Fisheries Technologists (India) Cochin, 1991) Chandrasekharan, M; Lakshmanaperumalsamy, P; Chandramohan’, D
    Effect of environmental factors such as temperature,pH and sodium chloride concentrations, individually and at various combinations, on the growth and survival of spoilage bacteria was studied in flesh broth and Zobells broth. Eight isolates, belonging to three different genera namely, Pseudomonas, Vibrio and Acinetobacter, harvested from spoiled Penaeus indicus were stored at 5,15,30,35 and 50°C, pH 2,4,6,8,10 and 12 and sodium chloride concentrations of 0,1,3,6,10 and 15%. Optimum growth for all the isolates was found to vary from 15 to 45°C and pH from 5-10. The growth pattern of all the isolates, in rcsponse to various sodium chloride concentrations was not similar in flesh broth and Zobells broth. Optimum sodium chloride concentration was found to vary from 1 to 6%. Influence of more than one environmental factor on the growth of spoilage bacteria was tested at various levels in flesh media by maintaining one of the factors constant and altering the other two. Results suggested that at extreme conditions each individual factor had an independent influence on the growth of bacteria.
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    Methods for Comparison of Potentialities of Fishing Grounds and Efficiencies of Gears
    (Society of Fisheries Technologists (India)Cochin, 1991) Rao, K. Venkateswara
    The potentialities of fishing grounds were studied using the non-parametric methods; Wilcoxon test, Sign test, Run test and Median test and the two fishing grounds tested were found equipotential. Gear efficiency was also studied by non-parametric methods.
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    Processing of Oyster Meat for Freezing
    (Society of Fisheries Technologists (India) Cochin, 1991) Chellappan, N.]ohn
    Experiments were conducted to determine the idealdepuration time for oysters and processing for shucking. A depuration time of 24 h reduced substantially the sand content. Steaming of oysters for shucking yielded better quality meat with good appearance than the hot water dipping method.
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    Comparative Study of the Major Nutrients of Macrobrachium idella (Hilgendorf, 1898)
    (Society of Fisheries Technologists (India) Cochin, 1991) Joseph, N.I; Jayachandran, K.V
    Proximate analysis has great importance for assessing the nutritive value of food organisms. Such data on many aquatic products are not available. The proximate composition of palaemonid prawns have not been determined. The present paper is a comparative study of the proximate compostion of Macrobrachium idella (Hilgendorf, 1898) from three biotops.
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    Relative Condition Factor in Nandus nandus (Hamilton)
    (Society of Fisheries Technologists (India) Cochin, 1991) John, K.C; Nair, N. Balakrishnan
    The relative condition factor (Kn) was calculated for males and females of Nandus nandus (Hamilton). In males the relative condition factor is above 0.7 in all months and showed two peaks, in August and in October whereas in females it is more or less steady with three median peaks - May, July and September. The results show that there is positive correlation between relative condition factor and reproductive cycle of this fish.
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    Drying of Anchovies (Stolephorus indicus) in a Solar Polythene Tent
    (Society of Fisheries Technologists (India) Cochin, 1991) Reddy, K. Punna; Sudhakara, N.S; Setty, T.M. Rudra; Rao, V. Surya Prakash
    The drying parameters of anchovies dried in solar tent dryer and under sun are compared. Though the temperature inside the tent was 14-15°C higher than the ambient temperature during early aftemoonin sunny days the drying rate did not show any significant difference between the two methods. Hence solar tent dryer offered little merit but for the protection given by tent against dust, insects, birds or sudden shower.