PEMANFAATAN LIMBAH NASI AKING PADA PEMBUATAN BIOPLASTIK DENGAN KITOSAN DAN PLASTICIZER SORBITOL

Abstract

Bioplastics are one type of plastic that can be degraded by the activity of microorganism in the environment. Aking rice contains high levels of starch (about 70.68%) and has the potential to be used as the main source of ingredients for making bioplastics. This study aims to obtain optimal conditions for the addition of chitosan and sorbitol and to determine their effect on the quality of bioplastic production. The production of this bioplastic was carried out by using the solution casting method with a composition of 6 grams of aking rice flour added with chitosan and sorbitol according to variations. In this study, variations addition of sorbitol affected the percentage of elongation. While variations addition of chitosan affected the tensile strength. Based on the test results, the addition of 10 grams of chitosan and 5 ml of sorbitol can produced bioplastics with the following qualities: a tensile strength value of 5.716 MPa, an elongation value of 22.1%, and a biodegradation percentage of 32.91% within 45 days. The results obtained have complied with SNI No.7188.7 for elongation values and completely degraded within 45 days according to ASTM 5338.