FT Vol.44(1)

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Browsing FT Vol.44(1) by Author "Mathew, P.T."

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    Colour and textural parameters of threadfin bream surimi during frozen storage as affected by cryoprotectants and chitosan
    (Society of Fisheries Technologists (India), Cochin, 2007) Rajalekshmi, M.; Mathew, P.T.
    Effect of chitosan on the colour and textural parameters of threadfin bream surimi during frozen storage were studied in comparison to commercial cryoprotectant blend and also the suitability of chitosan to replace polyphosphate in surimi during frozen storage was analysed. The treatment with cryoprotectants and /or chitosan did not have a significant influence on the moisture levels and pH during frozen storage. The addition of chitosan or cryoprotectants did not affect the colour of the samples. The textural parameters including gel strength showed higher values for the chitosan treated samples. The samples treated with sucrose, sorbitol and polyphosphate showed higher gel strength than the control upto about 4 months of frozen storage, but the textural quality was deteriorated towards the end of frozen storage where it was inferior even to the untreated samples. The sucrose-sorbitol-chitosan blend gave better textural properties to surimi than either chitosan alone or sucrose-sorbitol-polyphosphate bJend.
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    Effect of Different Organic Acids in Silage Preparation fom Shrimp Shell Waste
    (Society of Fisheries Technologists (India), Cochin, 2007) Santhosh, S.; Sini, T.K.; Mathew, P.T.
    The comparative effect of three commonly used organic acids in the production of silage from shrimp shell waste is hereby reported. Formic acid, lactic acid and citric acid were used at 5%, 6%, and 9% concentrations respectively. Samples were kept for 16 days and at an interval of three days, changes in pH, viscosity, protein content and mineral content were analyzed. Formic acid silage had the highest liquefaction and mineral content. Amino acid profile showed highest proportion of essential amino acids in formic acid silage. In silage prepared with lactic acid and citric acid, protein content and mineral content were very low. Chitin prepared from the shell residue of formic acid silage had good quality compared to others as supported by FTIR spectrum and mineral status.