Physicochemical characteristics and fibril-forming properties of collagen from paddlefish (Polyodon spathula) and globefish (Fugu flavidus) skin byproducts

文献类型： 外文期刊

第一作者： Wang, Shanshan

作者： Wang, Shanshan;Sun, Xiaoqi;Zhou, Deqing

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关键词： paddlefish; globefish; collagen; physicochemical property; fibril-forming property; fibril morphology

期刊名称：FOOD SCIENCE AND TECHNOLOGY （ 影响因子：1.718； 五年影响因子：2.263 ）

ISSN： 0101-2061

年卷期： 2017 年 37 卷 2 期

页码：

收录情况： SCI

摘要： Acid-soluble collagen (ASC) and pepsin-soluble collagen (PSC) from the skin byproducts of paddlefish (ASC-P and PSC-P) and globefish (ASC-G and PSC-G) were purified and characterized. The imino acid contents of ASC-P, PSC-P, ASC-G and PSC-G were 194.1, 197.9, 186.4 and 189.7 residues/1000 residues, respectively. SDS-polyacrylamide gel electrophoresis (SDS-PAGE) and Fourier transform infrared spectroscopy (FTIR) confirmed that all four samples composed of two different alpha 1-and alpha 2-chains with integrated triple-helical structure. Denaturation temperatures of ASC-P, PSC-P, ASC-G and PSC-G were 29.6, 28.2, 27.4 and 26.9 degrees C, respectively. Based on Transmission electron microscopy (TEM) observation, all four samples could assemble into fibrils in vitro with D-periodicity. However, the fibril-forming rate of ASC-P and PSC-P was more rapid than that of ASC-G and PSC-G. Scanning electron microscopy (SEM) analysis confirmed well-defined fibril morphologies, the diameter of fibrils from ASC-P and PSC-P was thicker than those of ASC-G and PSC-G after 24 h incubation. These results indicated that paddlefish and globefish skin collagens could be alternatives to terrestrial collagens for applications in food-packaging, nutraceutical and pharmaceutical industries.

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