Abstract

ABSTRACTThe physical, chemical and sensory properties of rainbow trout, pollock and shrimp processed at equal lethalities in cans and retortable pouches were compared at certain storage periods. Pouched rainbow trout, pollock and shrimp required respectively 34%, 32% and 37% less thermal processing time than the canned product. The pouched products had lower amounts of ammonia, trimethylamine and total carbonyl compounds than the canned products. The pouched products retained 17%, 9% and 15% more Vitamin B1 than the canned products for rainbow trout, pollock and shrimp, respectively. Pouched products had a firmer texture and lighter color than the canned products. In sensory evaluations, the pouched products were scored higher, in most cases, for color, flavor and overall acceptability.

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