Chitin is the major structural component of the exos-keleton of invertebrates and the cell walls of fungi [1, 5±8]. Since the biodegradation of chitin is very slow in crustacean shell waste, accumulation of large quantities of discards from processing of crustaceans has become a major concern in the seafood processing industry [9]. Out of the total solid waste landing in the USA, 50±90% is from shell®sh processing discards [10], the total global annual estimates of it is around 5.118106 metrictons [5]. Out of the dierent species of crustaceans, shrimp and crab shell wastes have been widely used for the isolation of chitin [11, 12]. Disposal of shell®sh pro-
cessing discards has, thus, been a challenge for most of the shell ®sh-producing countries. Therefore, production of value-added products such as chitin, chitosan and their derivatives and application of products in dierent ®elds is of utmost interest. Meyers and Chen [13] as well
as Shahidi and Synowiecki [9] have reported the eco-nomical acceptability of this industry with further extraction of pigments, proteins and carotenoproteins from processing discards of shrimp and crab.
Chitin is the major structural component of the exos-keleton of invertebrates and the cell walls of fungi [1, 5±8]. Since the biodegradation of chitin is very slow in crustacean shell waste, accumulation of large quantities of discards from processing of crustaceans has become a major concern in the seafood processing industry [9]. Out of the total solid waste landing in the USA, 50±90% is from shell®sh processing discards [10], the total global annual estimates of it is around 5.118106 metrictons [5]. Out of the dierent species of crustaceans, shrimp and crab shell wastes have been widely used for the isolation of chitin [11, 12]. Disposal of shell®sh pro-cessing discards has, thus, been a challenge for most of the shell ®sh-producing countries. Therefore, production of value-added products such as chitin, chitosan and their derivatives and application of products in dierent ®elds is of utmost interest. Meyers and Chen [13] as wellas Shahidi and Synowiecki [9] have reported the eco-nomical acceptability of this industry with further extraction of pigments, proteins and carotenoproteins from processing discards of shrimp and crab.
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