Marine Enzymes

Marine animals possess the same functional classes of enzymes as other living organisms, which enable them carry out virtually the same metabolic activities. These enzymes are present in the digestive glands and the muscle tissues


Marine animals carry out essentially the same types of metabolism as land animals. Thus, it is to be expected that marine animals will contain all six functional classes of enzymes (i.e., oxidoreductases, transferases, hydrolases, lyases, isomerases, and ligases). The scope of this article will be limited to those enzymes from fish and shellfish that either have the potential for commercial application

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Product quality includes nominal chemical characteristics of moisture %, salt %, curd/milk solids %, with fat % determined by difference. Other characteristics of product that are determined at time of production include pH of the aqueous phase, color, flavor, appearance, and net weight. Several package characteristics, including completeness of wrap, presence of lids, and legibility of code dating are checked also. Microbiological assays for standard plate count (SPC), yeasts, molds, and coliforms are determined routinely.

Typical limits are SPC 3,000/g, yeasts, molds, and coliforms negative by analysis. Periodic sampling for additional quality characteristics is also required, including vitamin A assay and selected pathogens. Quality begins with clearly stated product requirements and is built into the product via instructions for formulation and manufacture.

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