What causes melanosis in shrimp?

Chef's answer
Melanosis is a problem in prawns caused by the action of polyphenoloxidases on tyrosine, to which the common answer is treatment by sulphur dioxide in the form of sodium meta- bisulphite (Slattery et al. 1991). ... Melanosis occurs in the integument under the carapace in crustacea (Ogawa et al..
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Melanosis is a problem in prawns caused by the action of polyphenoloxidases on tyrosine, to which the common answer is treatment by sulphur dioxide in the form of sodium meta- bisulphite (Slattery et al. 1991). ... Melanosis occurs in the integument under the carapace in crustacea (Ogawa et al..
Blackspot, or melanosis, in shrimp is a harmless but objectionable discoloration or darkening, occurring primarily along the swimmerets, head, tail and nearby shell areas, before spreading further along shell edges and through the body..
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