Characterizations of pepsin-soluble collagen derived from lizardfish (saurida tumbil bloch, 1795) skin, bone and scales

A. Aziz Jaziri and Nurul Huda and Rossita Shapawi and Ruzaidi Azli Mohd Mokhtar and Wan Norhana Md. Noordin (2022) Characterizations of pepsin-soluble collagen derived from lizardfish (saurida tumbil bloch, 1795) skin, bone and scales. In: INTERNATIONAL CONFERENCE ON FOOD SCIENCE AND NUTRITION 2022 ” Future Food: Emerging Trends, Health and Diversity”, 24th-25th August 2022., Online.

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Reducing food waste is critical for sustainability. In the case of fish processing, more than sixty percent of by-products are generated as waste. Lizardfish (Saurida tumbil Bloch, 1795) is an economically important species for surimi production. To address waste disposal and maximize income, an effective utilization of fish by-products is essential. This study aims to isolate and characterize pepsin-soluble collagens from the skin, bone and scales of lizardfish. Significant differences (p < 0.05) in the yields of collagen were noted with the highest yield recorded in pep-sin-soluble skin collagen (PSSC) (3.50 ± 0.11%), followed by pepsin-soluble bone collagen (PSBC) (3.26 ± 0.10%) and pepsin-soluble scales collagen (PSCC) (0.60 ± 0.65%). Through SDS–polyacrylamide gel electrophoresis, the presence of two alpha chains were noted and classified as type I. From Fourier transform infrared spectroscopy (FTIR) analysis, the triple-helix structure of the collagen was maintained. The X-ray diffraction and UV visible spectra characteristics of the lizardfish collagens in this study are similar to the previously reported fish collagens. In terms of thermostability, PSSC (Tmax = 43.89 °C) had higher thermostability in comparison to PSBC (Tmax = 31.75 °C) and PSCC (Tmax = 30.54 °C). All pepsin-soluble collagens were highly soluble (>70%) in acidic conditions (particularly at pH 4.0) and at low sodium chloride concentrations (0–30 g/L). Microstructural analysis depicted that all extracted collagens were multi-layered, irregular, dense, sheet-like films linked by random coiled filaments. Overall, pepsin-soluble collagens from lizardfish skin, bone and scales could serve as potential alternative sources of collagens.

Item Type: Conference or Workshop Item (Paper)
Keyword: Lizardfish by-product , Pepsin-soluble collagen , Structural and physicochemical properties
Subjects: Q Science > QL Zoology > QL1-991 Zoology > QL801-950.9 Anatomy
R Medicine > RS Pharmacy and materia medica > RS153-441 Materia medica > RS200-201 Pharmaceutical dosage forms
Department: FACULTY > Faculty of Food Science and Nutrition
Date Deposited: 04 Apr 2023 15:43
Last Modified: 22 May 2023 11:31

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