The Chemical Characteristics of Chitosan Extracted from Green Mussels Shell (Mytilus virdis linneaus) and Its Potential Application as a Natural Coagulant

Abstract

Chitosan is a poly N-acetyl-glucosamine biopolymer, natural cationic polyelectrolyte, and biodegradable. Chitosan is obtained by alkaline deacetylation of chitin. Chitosan is extracted from green mussels shell (Mytilus virdis linneaus) and is expected to be an environmental friendly solution for abundant green shells waste.The aim of this study is to determine chemical characteristic of chitosan about degree of deacetylation. The degree of deacetylation was calculated from IR spectrum using the Fourier Transform Infra Red spectroscopy (FTIR). The degree of deacetylation of chitosan are used to study coagulation/flocculation mechanism. The results of the study indicated that green mussels shell was a rich source of chitosan. Chitosan was produced from No and Meyers methods through 3 subsequent processes i.e. deproteinasi, demineralization and deacetylation.The degree of deacetylation was 38.91%. The Test was carried out at laboratory scale and chitosan was applied as a natural coagulant in a jar test by using synthetic water where kaolin was added to act as a suspended solid and humic acid as an organic matter in the beaker experiment. Application of chitosan as a natural coagulant was optimum at pH 9, chitosan dose 250mg/L and turbidity removal efficiency 92.6%.

Decreased total cholesterol levels in rats administered with chitosan from Green mussel (Perna viridis L.) shells

“…One mg of chitosan was mixed with KBr (1% w/w), then the mixture was pressed into pellets. Afterward, these KBr pellets were inserted into the trailer, and the infrared absorption spectrum was recorded at the wavenumbers of 4000-400 cm -1 (Sinardi et al, 2013).…”