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Review
. 2024 Aug 5:13:102892.
doi: 10.1016/j.mex.2024.102892. eCollection 2024 Dec.

Valorization of fishery industry waste: Chitosan extraction and its application in the industry

Maricarmen Iñiguez-Moreno  1   2 , Berenice Santiesteban-Romero  1   2 , Elda M Melchor-Martínez  1   2 , Roberto Parra-Saldívar  1   2 , Reyna Berenice González-González  1   2
Affiliations
Review

Valorization of fishery industry waste: Chitosan extraction and its application in the industry

Maricarmen Iñiguez-Moreno et al. MethodsX. .

Abstract

Waste from the fishing industry is disposed of in soils and oceans, causing environmental damage. However, it is also a source of valuable compounds such as chitin. Although chitin is the second most abundant polymer in nature, its use in industry is limited due to the lack of standardized and scalable extraction methods and its poor solubility. The deacetylation process increases its potential applications by enabling the recovery of chitosan, which is soluble in dilute acidic solutions. Chitosan is a polymer of great importance due to its biocompatible and bioactive properties, which include antimicrobial and antioxidant capabilities. Chitin extraction and its deacetylation to obtain chitosan are typically performed using chemical processes that involve large amounts of strongly acidic and alkaline solutions. To reduce the environmental impact of this process, extraction methods based on biotechnological tools, such as fermentation and chitin deacetylase, as well as emerging technologies, have been proposed. These extraction methods have demonstrated the potential to reduce or even avoid using strong solvents and shorten extraction time, thereby reducing costs. Nevertheless, it is important to address existing gaps in this area, such as the requirements for large-scale implementation and the determination of the stoichiometric ratios for each process. This review highlights the use of biotechnological tools and emerging technologies for chitin extraction and chitosan production. These approaches truly minimize environmental impact, reduce the use of strong solvents, and shorten extraction time. They are a reliable alternative to fishery waste valorization, lowering costs; however, addressing the critical gaps for their large-scale implementation remains challenging.

Keywords: Biopolymers; Chitin; Chitosan: Waste valorization; Green extraction.

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Conflict of interest statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Figures

Image, graphical abstract
Graphical abstract
Fig 1
Fig. 1
Main natural chitin sources and common extraction processes.
Fig 2
Fig. 2
Chitosan modifications and its enhanced features.
Fig 3
Fig. 3
Main applications of chitosan in the food industry.
See this image and copyright information in PMC

References

    1. Coppola D., Lauritano C., Esposito F.P., Riccio G., Rizzo C., de Pascale D. Fish waste: From problem to valuable resource. Mar. Drugs. 2021;19 doi: 10.3390/MD19020116. - DOI - PMC - PubMed
    1. Anh P.T., Kroeze C., Bush S.R., Mol A.P.J. Water pollution by Pangasius production in the Mekong Delta, Vietnam: Causes and options for control. Aquac. Res. 2010;42:108–128. doi: 10.1111/j.1365-2109.2010.02578.x. - DOI
    1. Venugopal V., Sasidharan A. Seafood industry effluents: Environmental hazards, treatment and resource recovery. J. Environ. Chem. Eng. 2021;9 doi: 10.1016/j.jece.2020.104758. - DOI
    1. Kusnadi F.Fahma. IOP Conf Ser Earth Environ Sci, Institute of Physics. 2022. Study on the impact of crab processing waste using LCA in Karawang Regency. - DOI
    1. Vallejos M.B., Marcos M.S., Barrionuevo C., Olivera N.L. Fish-processing effluent discharges influenced physicochemical properties and prokaryotic community structure in arid soils from Patagonia. Science of the Total Environment. 2020;714 doi: 10.1016/j.scitotenv.2020.136882. - DOI - PubMed

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