Analisis Kadar Asam Lemak Bebas, Bilangan Yodium dan Bilangan Peroksida dari Used Cooking Oil (UCO) di Balai Laboratorium Bea dan Cukai Kelas I Medan Belawan

Abstract

Used cooking oil is the name for cooking oil that is used repeatedly. One of the household wastes that is almost always produced is used cooking oil or used cooking oil (UCO). Continuous consumption can harm the body and cause many diseases. Used cooking oil that is used repeatedly can experience several changes in properties, including the formation of free fatty acids and rancid odors. Because it contains carcinogenic compounds and free radicals, used cooking oil can be harmful to the body if reused. If disposed of directly without processing, used cooking oil is not only waste that damages the environment but is also harmful to human health. Used cooking oil can be used to make aromatherapy candles, solid and liquid soaps, or even biodiesel, which is an environmentally friendly alternative fuel. The purpose of this study was to test the quality of used cooking oil by measuring the levels of free fatty acids using the acid-base titration method, the amount of iodine using the iodometric titration method, and the amount of peroxide. Used cooking oil is blackish brown in color and is taken from several frying places. SNI 01–3741: 2013 is used to test used cooking oil. The results of used cooking oil testing on free fatty acid levels of 3.03 - 3.86%, iodine number 52.70 - 60.65 g I2/ 100g peroxide number 3.81- 11.16 meq O2 / kg. This study shows that the Used Cooking Oil samples analyzed have a quality that can no longer be used based on the reference parameters of Permenperin No. 32 of 2024 and SNI 01 - 341 - 2013 to ensure product safety and quality.