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Chitin from Antarctic krill shell: Eco-preparation, detection, and characterization
Yuan Yu1, Xiaofang Liu1, Junkui Miao1
1Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Polar Fishery, Ministry of Agriculture and Rural Affairs, No.106 Nanjing Road, Qingdao, Shandong Province 266071, PR China.
International Journal of Biological Macromolecules
|September 5, 2020
Summary
This study presents a mild, eco-friendly method to extract chitin from Antarctic krill shell (AKS). The developed process yields high-quality chitin (AKC-1) and deacetylated chitin (AKC-2) with significant amino-monosaccharide content.
Area of Science:
- Marine Biology
- Biochemistry
- Materials Science
Background:
- Antarctic krill (Euphausia superba) is a keystone species in the Antarctic ecosystem.
- Antarctic krill shell (AKS) is a potential source of chitin, a valuable biopolymer.
- Efficient and sustainable methods for chitin extraction are needed for resource utilization.
Purpose of the Study:
- To develop a mild and eco-friendly method for preparing chitin from Antarctic krill shell (AKS).
- To characterize the extracted chitin (AKC-1) and deacetylated chitin (AKC-2).
- To establish a method for detecting amino-monosaccharide content in raw materials and chitin products.
Main Methods:
- Chitin extraction from AKS using lactic acid and dispase.
- Pre-column PMP-HPLC method for amino-monosaccharide content determination.
- Analytical techniques (e.g., TGA, SEM) for characterizing chitin properties.
Main Results:
- The amino-monosaccharide content of AKS was 4.62 g/100 g (D-glucosamine).
- Chitin (AKC-1) yield was 5.49 g/100 g with 80.90 g/100 g amino-monosaccharide content, exhibiting α-chitin structure.
- Deacetylated chitin (AKC-2) yield was 4.74 g/100 g, with 80.8% deacetylation degree and 97.06 g/100 g amino-monosaccharide content.
Conclusions:
- A mild, eco-friendly method for Antarctic krill chitin preparation was successfully developed.
- The study provides a reliable method for amino-monosaccharide content detection.
- The findings support the comprehensive utilization of Antarctic krill resources for chitin production.
