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THE VARIOUS STEPS TO PRODUCE BIOPLASTICS AND MEMBRANES FROM INSECTS OR CRUSTACEANS. APPLICATIONS AND GREEN METRICS.
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Ana Ribeiro; B. Abreu; B. Afonso; B. Santos; M.F.Albernaz; A.M.C. Ferraria; L.M.D.R.S. Martins
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10.5593/sgem2023v/6.2
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1314-2704
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English
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23
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6.2
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• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA |
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Chitin and chitosan, which due to their wide applicability and abundance are of increasing interest to industries. Chitin is extracted from a wide range of living things by a variety of methods, which may be chemical or biological. Chitosan is obtained from the alkaline deacetylation of chitin by chemical or enzymatic processes. Due to their different polysaccharide chains, chitin and chitosan have different properties. Chitin is thus an insoluble polymer in most solvents, while chitosan is a soluble polymer in acid solvents because there is protonation of the amide group of this polymer, which makes it soluble in acid solvents. The source from which the greatest extraction of chitin occurs is from crustaceans such as shrimps, crabs, lobsters, crayfish, and clams. Extraction from crustaceans is an economical process, but seasonal, since most crustaceans are species that only belong to one season of the year. Since crustaceans are living beings that are not in abundance in the environment and in all seasons of the year, insects have been the subject of study for the extraction of chitin, since they exist in abundance in nature, throughout the year and in various parts of the world, being an excellent resource for a large-scale production of chitin and chitosan. Chitosan is the base for bioplastics and membranes.in this work a review of the existing methods and applications will be surveyed. Also, some green metrics regarding the synthesis of chitosan will be presented and discussed.
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conference
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Proceedings of 23rd International Multidisciplinary Scientific GeoConference SGEM 2023
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23rd International Multidisciplinary Scientific GeoConference SGEM 2023, 28-30 November, 2023
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
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451-464
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28-30 November, 2023
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website
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9630
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Chitin; Chitosan; Extraction; Membranes; Bioplastics
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