Synthesis of halal membrane capsule from water soluble chitosan by adding sodium lauryl ether sulphate

Abstract

Membrane capsule has been synthesized from water soluble chitosan (WSC), agar, and Sodium Lauryl Ether Sulphate (SLES). The concentration of agar used 0.02% (v/v) and the concentration of SLES up to 0.16% (v/v). WSC has been synthesized from shrimp shells, shrimp shells through demineralization, deproteination and deacetylation. After going through 3 processes chitosan converted into WSC by depolymerisation process. Degree of deacetylation (DD) of WSC was calculated based on FTIR baseline method, the value of DD is 77.9%. Based on FTIR spectra showed that the obtained film capsule shell had vibration from its constituent molecules, i.e. chitosan, agar and SLES. Based on tensile test data, it showed that the increasing of SLES concentration would increase the elasticity of shell matrix. Swelling test data in water and 0.1 N HCl showed the greatest value in capsule film with SLES concentration 0.12% is 420.27% and the capsule can be degraded (broken) in 20th minutes. Capsule membrane with SLES concentration 0.12% has the largest degradation value in water and 0.1 N HCl that is 70.91% and 81.32%. Based on research data obtained that the membrane with SLES concentration 0.12% that most appropriate with commercial capsule.