FREEZING CHARACTERISTICS Of TROPICAL FISHES Ill SPOTTED SEER (SCOMBEROMORUS GUTTATUS)

Abstract

Skin-on fillets of spotted seer were frozen individually with
different prefreezing ice storage periods, and srored at -23°C
and -l0°C. The frozen storage shelflife was evaluated, with
respect to holding time in ice pfior to freezing, by examining
the extent of oxidative rancidity, protein denaturation, organoleptic
changes etc. Fillets with pre-freezing ice storage periods
of 0, 3, 5 and 7 days had frozen storage shelf-life of 32,
24, 20 and 16 weeks respectively at -23°C. The fillets stored
in ice for more than 7 days is unsuitable for further processing.
Storage temperature greatly affected keeping quality of frozen
fillets. Freshly frozen fillets stored at -10°C became unpalatable
at 16-20 weeks as compared to 28-32 weeks for the fillets
stored at -23°C.