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Struvite
Crystals of calcium or magnesium ammonium phosphate occasionally found in canned fish and shellfish, especially in salmon, tuna, mackerel and crustacean meat, and sometimes in chilled or frozen, smoked fish. The crystals are transparent, have a glassy consistency and are harmless, but can be mistaken for shards of broken glass. Occurrence of struvite is linked to the presence of magnesium chloride, a common component of unrefined salt, in the brine used in processing, and to high, postmortem pH in the meat. Common preventive measures include addition of either sodium hexametaphosphate or citric acid both of which sequester free magnesium and calcium ions, or lowering the pH of the product to avoid precipitation of the crystals.
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- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Fishing
- Category: Fish processing
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Related terms
fish processing
Fishing; Fish processing
Refers to the processes associated with fish and fish products between the time fish are caught or harvested, and the time the final product is delivered to the customer.
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