4.6 Article

Physicochemical and thermal properties of pepsin- and acid-soluble collagen isolated from the body wall of sea cucumbers (Stichopus hermanni)

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JOURNAL OF FOOD SCIENCE
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WILEY
DOI: 10.1111/1750-3841.16858

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acid-soluble collagen; collagen extraction; collagen properties; pepsin-soluble collagen; sea cucumber (Stichopus hermanni)

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The main objective of this study was to characterize the acid-soluble collagen (ASC) and pepsin-soluble collagen (PSC) from the body wall of Stichopus hermanni sea cucumber. Despite having similar chemical compositions, ASC had a lower yield and whiter color compared to PSC, showing promise as a substitute for collagen derived from marine sources.
The main objective of this work was to characterize the acid-soluble collagen (ASC) and pepsin-soluble collagen (PSC) from the body wall of the sea cucumber scientifically called, Stichopus hermanni. For the extraction of ASC and PSC, the pre-treated sea cucumber body walls were subjected to 0.5 M acetic acid and 5 g L-1 pepsin, respectively. The yield of ASC (7.30% +/- 0.30%) was found to be lower than the PSC (23.66% +/- 0.15%), despite both ASC and PSC having similar chemical compositions except for the quantity of protein. The collagens produced from ASC and PSC show maximum peaks on ultraviolet-visible spectroscopic profiles at wavelengths of 230 and 235 nm, respectively, with no significant difference in the maximum temperature (T-max) of the extracted ASC and PSC. The ASC's coloration was whiter than that of the PSC. As a result, the collagen obtained from the body wall of the sea cucumber showed promise for usage as a substitute for collagen derived from marine sources.

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