Abstract
ABSTRACT An eco-friendly method of extraction for chitin and chitosan extracted from crawfish was our goal. Chitin is always present with proteins, minerals, and other components. This study used an eco-accommodating, novel technique for chitin and chitosan extraction. Lactobacillus lactis was used for the deproteinization and demineralization of chitin in a single stage by Saccharomyces cerevisiae (BB: biological-biological extraction) to convert chitin into chitosan. BB is a more environmentally friendly method of producing chitosan than deacetylation with NaOH (BC: biological-chemical extraction). Chitosan was characterized by FTIR. A high degree of deacetylation (%) was observed. The UV spectrum for chitosan was similar at 0.788, 0.415, and 1.150 for CC, BC, and BB, respectively. The results show that chitosan (BB) has potential applications in the biomedical fields such as antioxidant activity, anticancer activity against human liver cancer (HepG2), breast cancer (MCF-7) and human hepatocellular carcinoma (HCT) cell lines. The results in terms of water treatment and removal of dyes using chitosan (BB) are valuable in terms of its application in industrial wastewater treatment and demonstrate that it can be used as a biosorbent.
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