Effect of chilled storage on quality characteristics of battered and breaded snack product from large sized Catla (Catla catla)

Abstract

This study was performed to determine quality changes of battered and breaded pre-fried snack product developed from large sized (5.5-10.5kg) Catla (Catla catla) fish stored at chilled temperature (- 2 to - 4°C). Quality changes were assessed based on biochemical, microbiological and sensory quality evaluation at 2days interval for a period of 18days. Results of biochemical analysis showed increase in total volatile base-nitrogen (TVB-N) values from initial value of 4.15-13.74mg/100g, free fatty acid (FFA) increased from 0.95 to 2.98% in terms of oleic acid, peroxide value (PV) increased from 2.6 to 3.9meq of O2/kg of fat and pH increased from 6.5 to 6.79 during 18days chilled storage. Linearity (r2) of TVB-N, FFA, PV and pH values during storage were found to be 0.98, 0.99, 0.97 and 0.99 respectively. In microbiological quality evaluation total plate count (Log. Values) increased from 2.17 to 4.65, while Escherichia coli, Staphylococcus aureus, Salmonella and spore count were not detected during storage period. Results of sensory analysis reported a negative correlation with storage period concluding the shelf life of battered and breaded fish cutlet from Catla fish to be 12days at chilled storage conditions.