Pregledni rad
Chitin Extraction from Crustacean Shells Using Biological Methods – A Review
Wassila Arbia
; Laboratory of Environmental Biotechnology and Process Engineering (BIOGEP), Department of Environmental Engineering, Polytechnic National School, 10 Avenue Hacene Badi, BP 182, El Harrach, DZ-16200 Algiers, Algeria
Leila Arbia
; Laboratory of Environmental Biotechnology and Process Engineering (BIOGEP), Department of Environmental Engineering, Polytechnic National School, 10 Avenue Hacene Badi, BP 182, El Harrach, DZ-16200 Algiers, Algeria
Lydia Adour
; Department of Chemistry, Faculty of Science, Mouloud Mammeri University of Tizi Ouzou, DZ-15000 Tizi Ouzou, Algeria
Abdeltif Amrane
orcid.org/0000-0003-2622-2384
; National School of Chemistry of Rennes, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, FR-35708 Rennes Cedex 7, France
Sažetak
After cellulose, chitin is the most widespread biopolymer in nature. Chitin and its derivatives have great economic value because of their biological activities and their industrial and biomedical applications. It can be extracted from three sources, namely crustaceans, insects and microorganisms. However, the main commercial sources of chitin are shells of crustaceans such as shrimps, crabs, lobsters and krill that are supplied in large quantities by the shellfish processing industries. Extraction of chitin involves two steps, demineralisation and deproteinisation, which can be conducted by two methods, chemical or biological. The chemical method requires the use of acids and bases, while the biological method involves microorganisms. Although lactic acid bacteria are mainly applied, other microbial species including proteolytic bacteria have also been successfully implemented, as well as mixed cultures involving lactic acid-producing bacteria and proteolytic microorganisms. The produced lactic acid allows shell demineralisation, since lactic acid reacts with calcium carbonate, the main mineral component, to form calcium lactate.
Ključne riječi
chitin; crustacean shells; chitin extraction; biological methods
Hrčak ID:
99743
URI
Datum izdavanja:
29.3.2013.
Posjeta: 35.148 *