Studies on collagen from the skin of channel catfish (Ictalurus punctaus)

被引：133

作者：

Liu, HaiYing ^{[1
]}

Li, Ding ^{[1
]}

Guo, ShiDong ^{[1
]}

机构：

[1] So Yangtze Univ, Sch Food Sci & Technol, Wuxi 214036, Jiangsu, Peoples R China

来源：

FOOD CHEMISTRY | 2007年 / 101卷 / 02期

关键词：

channel catfish; collagen; amino acid content; denaturation temperature;

D O I：

10.1016/j.foodchem.2006.01.059

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Acid-soluble and pepsin-soluble collagens (ASC and PSC) were extracted from the skin of channel catfish (Ictalurus punctaus) and partially characterized. The collagen obtained in the experiment contained more than 23% glycine as the most abundant amino acid. The denaturation temperature of acid-soluble collagen was 32.5 degrees C, about 5 degrees C lower than that of the porcine skin collagen. SDS-PAGE showed that the collagens were composed of two distinct alpha chains, which is similar to the porcine type I collagen. The contents of the skin ASC and PSC, on a dry weight basis, were 25.8% and 38.4%, respectively. These results suggest that channel catfish skin has potential as a supplement to the sources of vertebrate collagens. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：621 / 625

页数：5

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