Abstract
Gelatin has been prepared from the skin and skeleton (separately) of the dogfish, Squalus suckleyi. The gelling and melting points of a 10% solution were 15 and 22 °C respectively, for gelatin from skin, and 14 and 23 °C for that from skeleton. The skin gelatin contained 16.3%, total nitrogen, 6.4% hydroxyproline, and 0.28% tyrosine. The corresponding values for skeleton gelatin were 15.7, 8.8, and 0.29%. Yields of gelatin were low, being 7% from skin and 2% from skeleton on a wet-weight basis.
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