Utilization of Lumpfish ( Cyclopterus lumpus ) Skin as a Source for Gelatine Extraction Using Acid Hydrolysis.

Autor:	Sasidharan A; Department of Biotechnology and Food Science, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway.; Department of Fish Processing Technology, KUFOS, Kochi 682506, India., Tronstad ER; Department of Biotechnology and Food Science, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway., Rustad T; Department of Biotechnology and Food Science, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway.
Jazyk:	angličtina
Zdroj:	Marine drugs [Mar Drugs] 2024 Apr 10; Vol. 22 (4). Date of Electronic Publication: 2024 Apr 10.
DOI:	10.3390/md22040169
Abstrakt:	Lumpfish ( Cyclopterus lumpus ) is an underutilized marine resource that is currently only being exploited for roe. Lumpfish skin was pre-treated with alkali (0.1M NaOH) and acid (0.1M HCl) at a skin to chemical ratio of 1:10 for 24 h at 5 °C to remove non-collagenous proteins and minerals. The pre-treated skin was washed, and gelatine was extracted with 0.1M of acetic acid at three different ratios (1:5, 1:10, and 1:15), time (12,18, and 24 h), and temperature combinations (12, 28, and 24 °C). The highest total extraction yield (>40%) was obtained with combinations of extraction ratios of 1:15 and 1:10 with a longer time (24 h) and higher temperature (18-24 °C). The highest gelatine content was obtained with an extraction period of 24 h and ratio of 1:10 (>80%). SDS-PAGE analysis confirmed the presence of type-I collagen. A rheological evaluation indicated melting and gelling temperatures, gel strength, and viscosity properties comparable to existing cold-water gelatine sources. Competing Interests: The authors declare no conflicts of interest.
Databáze:	MEDLINE
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