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Obtaining chitin, chitosan and their melanin complexes from insects
Adelya Khayrova1, Sergey Lopatin1, Valery Varlamov1
1Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky prospect, 33, build. 2, 119071 Moscow, Russia.
International Journal of Biological Macromolecules
|November 17, 2020
Summary
Insects offer a novel source for chitin and chitosan, compounds with valuable biological properties. Combining these with melanin creates synergistic effects for diverse applications.
Area of Science:
- Biomaterials Science
- Entomology
- Biochemistry
Background:
- Insects are increasingly recognized as a source of valuable biologically active substances.
- Insect exoskeletons are rich in chitin (up to 40%), a precursor to chitosan.
- Chitosan possesses notable sorption, antimicrobial, film-forming, and wound-healing properties.
Purpose of the Study:
- To explore the potential of insects as a source for chitin and chitosan.
- To investigate the properties of chitin- and chitosan-melanin complexes derived from specific insect species.
- To evaluate the synergistic biological activities of these complexes.
Main Methods:
- Extraction of chitin from insect exoskeletons.
- Deacetylation of chitin to produce chitosan.
- Isolation of melanin from insect tissues.
- Formation and characterization of chitin-melanin and chitosan-melanin complexes.
- Assessment of biological activities (e.g., antimicrobial, wound healing potential).
Main Results:
- Successful isolation of chitin and chitosan from insect sources.
- Demonstration of unique insect species yielding chitin- and chitosan-melanin complexes.
- Evidence of synergistic enhancement of biological activity between chitosan and melanin.
- Identification of a wide range of potential applications for these complexes.
Conclusions:
- Insects represent a promising and sustainable source for chitin and chitosan.
- Chitin-melanin and chitosan-melanin complexes exhibit enhanced biological properties due to synergistic interactions.
- These insect-derived biomaterials hold significant potential for applications in medicine, cosmetics, and materials science.
