Open Access
ARTICLE
Extraction Hydrolysates from Larimichthys Polyactis Swim Bladder Using Enzymatic Hydrolysis
Ling Pan1 , Yubo Tao2,*, Peng Li1,2,*
1 College of Material Science and Engineering, Northeast Forestry University, Harbin, 150040, China
2 State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China
* Corresponding Authors: Yubo Tao. Email: ; Peng Li. Email:
(This article belongs to this Special Issue: Renewable Material from Agricultural Waste and By-Product and Its Applications)
Journal of Renewable Materials 2021, 9(6), 1099-1109. https://doi.org/10.32604/jrm.2021.014683
Received 20 October 2020; Accepted 30 November 2020; Issue published 11 March 2021
Abstract
As a kind of biopolymer, hydrolysates of fish swim bladder, safer than those of land mammals, are widely used in
food, cosmetics as well as pharmaceutical and biomedical fields for their biocompatibility, biodegradability, and
weak antigenicity. To enhance hydrolysate production, in this paper, the papain and alcalase hydrolysis processes
of larimichthys polyactis swim bladder were optimized with orthogonal experiments. With 89.5% hydrolysate yield,
the optimal processing conditions for alcalase were solid-liquid ratio of 1:30, enzyme concentration of 0.7%, and
extraction time of 6 h. As for papain, under the optimal processing conditions: solid-liquid ratio of 1:20, enzyme
concentration of 0.5%, and extraction time of 8 h, the hydrolysate yield was 65.1%. To obtain higher hydrolysate
yields, the ultrasonic pretreatments were implemented before the optimal enzyme hydrolysis processes. With ultrasonic waves of 100 W for 50 min, the hydrolysate yields were increased 2.1% (alcalase) and 4.5% (papain), respectively. The Fourier Transform Infrared (FTIR) spectroscopic analysis revealed that the hydrolysates extracted by
papain exist in triple-helical forms. The Ultra-Violet (UV) absorption spectra indicated that the aromatic amino
acids in the hydrolysates had strong absorptions in the wavelength range of 240 nm–300 nm. The results of this
research demonstrate that the alcalase hydrolysates have better solubility in water and the solution is more stable
under ambient temperature. However, the hydrolysates extracted by papain have a gel property and are insoluble
in weak acid at room temperature, which is more suitable for applications in feedstock of biomedical.
Keywords
Cite This Article
Pan, L., Li, P. (2021). Extraction Hydrolysates from
Larimichthys Polyactis Swim Bladder Using Enzymatic Hydrolysis.
Journal of Renewable Materials, 9(6), 1099–1109. https://doi.org/10.32604/jrm.2021.014683