spoilage of fish is considered as any change that renders the product unacceptable for human consumption. Essentially, fish and seafood products spoilage is a consequence of various microbial, biochemical and chemical breakdown processes. The degree of processing and preservation, together with storage temperature, will decide whether the fish undergoes microbial spoilage, biochemical spoilage or a combination of both. The initial quality loss is mainly due to the post mortem autolytic activity and chemical degradation processes, such as lipid oxidation. However, the most prevalent from in fresh fish chilled or not, is microbial spoilage ( Odoli 2009). Information about handling, processing and storage techniques, including time/temperature histories, which can affect the freshness and quality of the products, is very important for the partners in the chain.Additionally, seasonal condition, the effects of fishing grounds and catching methods and the occurrence of various quality defects influence the overall quality. Fresh fish is susceptible to rapid spoilage at an ambient temperature. A reduction of storage temperature by 5-6 halves the rate of biochemical reactions and doubles the shelf-life of chapter 5Quality changes of fish during chilling
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