Journal of the Faculty of Fisheries and Animal Husbandry, Hiroshima University Volume 14 Issue 1
1975-08-30 発行

Studies on Carotenoprotein in Aquatic Animals : V. Thermal Reddening of Exoskeleton of Crayfish (Procambarus clarkii)

水産動物のカロチノプロテインに関する研究 : V. アメリカザリガニ甲殻の加熱赤変について
Nakagawa, Heisuke
Kayama, Mitsu
Asakawa, Suezo
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abstract
The carotenoid composition of crayfish exoskeleton before and after heat-treatments was determined in order to explain the mechanism of thermal denaturation of carotenoprotein.
(1) The reddening of exoskeleton by boiling resulted not only from the splitting of carotenoid-protein link, but also from some structural modifications of the protein.
(2) There was no evidence of the yield of astacin caused by heating of exoskeleton.
(3) Violent heating decomposed astacin more heavily than other carotenoids in the exoskeleton.