Penentuan Kandungan Asam Lemak Bebas dan Bilangan Iod Minyak Goreng Curah Belawan dengan Menggunakan Alat FT-IR di Laboratorium Badan Pengujian dan Identifikasi Barang Tipe B Belawan

Abstract

A study on thedetermination free fatty acid contents and iodine number of the Belawan bulk oil samples has been carried out in Balai Pengawasan dan Identifikasi Barang Tipe-B Belawan. The determinations were conducted by using volumetric titration in which phenolphthalein was used as indicator and wijs solution as a reagent. The initial identification of the oil was conducted by using FT-IR. The spectrum of FTIR show that the bulk sample is belong to the group of RBD Palm Olein. The result obtained show that the fatty acids contents in the sample were consist of 0,2280% oleic acid, 0,1617% lauric acid and 0,2070% palmitic acid. The iodine number was shown to be 22,2274%. Free fatty acids contained in the sample bulk cooking oil Belawan meet the Standar Nasional Indonesia is not more than 0.3%. While iodine Numbers of samples did not meet the Indonesian National Standard I2/100 45-46 gr gr sample, (SNI - 3741-1995).