The Van Soest acid detergent fiber method was compared with the modified Welinder method for chitin analysis of Alaskan crab and shrimp meals to determine whether chitin constituted a significant fibrous component of shellfish meals. In the Welinder method, chitin is determined gravimetrically following decalcification and deproteinization with .1 M ethylenediaminetetraacetic acid and 2 N sodium hydroxide, respectively, Chitin is a fibrous component of shellfish meals, and the Van Soest acid detergent fiber method is acceptable for determination of shellfish chitin.
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Stelmock et al. (1985) studied this question.
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