초록

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Abstract ▼ AI-Helper

In order to utilize effectively fish skin from fish processing, characteristics of the yellowfin sole and dover sole skins were investigated. In the yellowfin sole, the crude protein content and yield of fish skin used for the preparation of gelatin were 22.3% and 11.3%, respectively and in the dove...

In order to utilize effectively fish skin from fish processing, characteristics of the yellowfin sole and dover sole skins were investigated. In the yellowfin sole, the crude protein content and yield of fish skin used for the preparation of gelatin were 22.3% and 11.3%, respectively and in the dover sole, 17.2% and 8.9%, respectively. In the yellowfin sole skin, the soluble and insoluble collagen occupied 66.1% and 33.9%, respectively and in the dover sole skin, 78.8% and 21.1%, respectively. No difference in the amino acid composition between soluble and insoluble collagen was detected. The sum of proline and hydroxyproline content in the collagen extracted from fish skin was lower than that of those from pork skin or bone. The molecular weight of the two major subunits from the soluble collagen in the yellowfin sole skin were found to be 143 KDa and 202 KDa. Those in the dover sole skin were 142 KDa and 207 KDa. The physico-chemical properties such as the melting point and gelling point of yellowfin sole skin gelatin were superior to those of dover sole skin gelatin.

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