Biochemical and microstructural characteristics of collagen biopolymer from unicornfish (Naso reticulatus Randall, 2001) bone prepared with various acid types

Nurul Syazwanie Fatiroi and Abdul Aziz Jaziri and Rossita Shapawi and Ruzaidi Azli Mohd Mokhtar and Wan Norhana Md. Noordin and Nurul Huda (2023) Biochemical and microstructural characteristics of collagen biopolymer from unicornfish (Naso reticulatus Randall, 2001) bone prepared with various acid types. Polymers, 15. pp. 1-16.

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URL: https://www.mdpi.com/2073-4360/15/4/1054

Abstract

Biopolymer-like collagen has great industrial potential in terms of its excellent properties, such as strong biocompatibility, high degradability, and low antigenicity. Collagen derived from fish by-products is preferable as it is safer (free from transmittable diseases) and acceptable to most religious beliefs. This study aimed to characterize the unicornfish (Naso reticulatus Randall, 2001) bone collagens prepared with different type of acids, i.e., acetic acid, lactic acid, and citric acid. A higher yield (Y) (p < 0.05) was obtained in the citric-acid-soluble collagen (CASC) (Y = 1.36%), followed by the lactic-acid-soluble collagen (LASC) (Y = 1.08%) and acetic-acid-soluble collagen (AASC) (Y = 0.40%). All extracted collagens were classified as type I due to the presence of 2-alpha chains (α1 and α2). Their prominent absorption spectra were located at the wavelengths of 229.83 nm to 231.17 nm. This is similar to wavelengths reported for other fish collagens. The X-ray diffraction (XRD) and infrared (IR) data demonstrated that the triple-helical structure of type I collagens was still preserved after the acid-extraction process. In terms of thermal stability, all samples had similar maximum transition temperatures (Tmax = 33.34–33.51 ◦C). A higher relative solubility (RS) of the unicornfish bone collagens was observed at low salt concentration (0–10 g/L) (RS > 80%) and at acidic condition (pH 1.0 to pH 3.0) (RS > 75%). The extracted collagen samples had an irregular and dense flake structure with random coiled filaments. Overall, bones of unicornfish may be used as a substitute source of collagen.

Item Type:	Article
Keyword:	Collagen biopolymer, Unicornfish bone, Acid extraction, Characterization
Subjects:	S Agriculture > SH Aquaculture. Fisheries. Angling > SH1-691 Aquaculture. Fisheries. Angling > SH20.3-191 Aquaculture T Technology > TX Home economics > TX1-1110 Home economics > TX341-641 Nutrition. Foods and food supply
Department:	FACULTY > Faculty of Food Science and Nutrition
Depositing User:	SITI AZIZAH BINTI IDRIS -
Date Deposited:	16 Dec 2024 11:24
Last Modified:	16 Dec 2024 11:24
URI:	https://eprints.ums.edu.my/id/eprint/42241

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