COMPARATIVE ASSESSMENT OF QUALITY OF FARM AND MARKET PROCURED CTENOPHARYNGODON IDELLA AND ENHANCEMENT OF SHELF LIFE THROUGH PRESERVATION METHODS.

Roopma Gandotra, Meenakshi Koul*, Sweta Gupta and Vaini Gupta

ABSTRACT

The present course of investigation, an experiment was conducted to determine the shelf life (keeping quality) of Ctenopharyngodon idella procured from local Fish farm (F) and market (M), on the basis of biochemical and microbial analysis. Further, with an aim to extend the shelf life, the frozen samples-12OC (both farmed and marketed) were subjected to different preservation and storage techniques i.e. brining (group .BF and BM) and vacuum packaging(Gp.VF and VM) for a period of 3weeks. Proximate composition of muscles reveals a decreasing trend for protein and lipid parameters in all the samples with signifantly low (P<0.5) decrease in VF and VM samples followed by BF and BM and highest in unprocessed frozen control. Values for TBA were found to be within permissible limits i.e. 8 mg MA/ kg. After 21 days, it was 2.19 mg MA/kg in VF and 2.96 mg MA/kg in VM but in BM samples, it crosses its limit on 18th day of storage i.e.8.12 MA/kg while in both untreated control samples, the TBA limit was maintained only upto 7 days. Similarly, the values for FFA after 21 days were 3.65% in VF and 4.12% in VM while it crossed the acceptable limits of 5% on 18th day in Gp. B and 9th day in untreated control. Based on the microbial load in terms of total plate count(TPC) in various samples the following trend appears after 21 days i.e control M(9.18 logcfu/g )˃ Control F(8.10 log cfu/g) ˃ BM(7.16 logcfu/g)˃ BF(5.8 logcfu/g 0)˃VM (4.13 logcfu/g)˃VF(2.96 logcfu/g).

Keywords: Proximate composition, Thiobarbituric acid (TBA), Free fatty acid (FFA), Total plate count (TPC).