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Open AccessFeature PaperReview

Conversion of Chitin to Defined Chitosan Oligomers: Current Status and Future Prospects

1
Aachen-Maastricht Institute for Biobased Materials, Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
2
Department Plant Biotechnology, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Forckenbeckstraße 6, 52074 Aachen, Germany
3
Indiana Bioscience Research Institute, 1345 W 16th St #300, Indianapolis, IN 46202, USA
*
Author to whom correspondence should be addressed.
Mar. Drugs 2019, 17(8), 452; https://doi.org/10.3390/md17080452
Received: 9 July 2019 / Revised: 25 July 2019 / Accepted: 26 July 2019 / Published: 1 August 2019
(This article belongs to the Collection Bioactive Compounds from Marine Invertebrates)
Chitin is an abundant polysaccharide primarily produced as an industrial waste stream during the processing of crustaceans. Despite the limited applications of chitin, there is interest from the medical, agrochemical, food and cosmetic industries because it can be converted into chitosan and partially acetylated chitosan oligomers (COS). These molecules have various useful properties, including antimicrobial and anti-inflammatory activities. The chemical production of COS is environmentally hazardous and it is difficult to control the degree of polymerization and acetylation. These issues can be addressed by using specific enzymes, particularly chitinases, chitosanases and chitin deacetylases, which yield better-defined chitosan and COS mixtures. In this review, we summarize recent chemical and enzymatic approaches for the production of chitosan and COS. We also discuss a design-of-experiments approach for process optimization that could help to enhance enzymatic processes in terms of product yield and product characteristics. This may allow the production of novel COS structures with unique functional properties to further expand the applications of these diverse bioactive molecules. View Full-Text
Keywords: chitin; chitosan; chitosan oligomers; deacetylation; depolymerization; enzymatic conversion; design of experiments chitin; chitosan; chitosan oligomers; deacetylation; depolymerization; enzymatic conversion; design of experiments
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MDPI and ACS Style

Schmitz, C.; González Auza, L.; Koberidze, D.; Rasche, S.; Fischer, R.; Bortesi, L. Conversion of Chitin to Defined Chitosan Oligomers: Current Status and Future Prospects. Mar. Drugs 2019, 17, 452. https://doi.org/10.3390/md17080452

AMA Style

Schmitz C, González Auza L, Koberidze D, Rasche S, Fischer R, Bortesi L. Conversion of Chitin to Defined Chitosan Oligomers: Current Status and Future Prospects. Marine Drugs. 2019; 17(8):452. https://doi.org/10.3390/md17080452

Chicago/Turabian Style

Schmitz, Christian; González Auza, Lilian; Koberidze, David; Rasche, Stefan; Fischer, Rainer; Bortesi, Luisa. 2019. "Conversion of Chitin to Defined Chitosan Oligomers: Current Status and Future Prospects" Mar. Drugs 17, no. 8: 452. https://doi.org/10.3390/md17080452

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