Studi Kombinasi Karbon Aktif Kulit Buah Kakao (Theobrama Cacao) dan Tepung Maizena dalam Penjernihan Minyak Jelantah

Abstract

Used cooking oil is an organic waste that is always produced from household processes and the food industry. This oil is no longer suitable for consumption because it contains high levels of free fatty acids. However, there is a situation where the price of oil increases until there is a shortage of oil, people continue to use used cooking oil for cooking. This encourages research to make efforts to clarify or purify used cooking oil. In this research, used cooking oil was clarified through heating by adding a mixture of activated carbon and cornstarch. Heating was carried out for 1 hour at 160C. The results obtained show that oil processed with a mixture of carbon and cornstarch has better physical properties (acid number, density and flow rate) than used cooking oil. The oil samples treated with activated carbon had physical properties that were better than used cooking oil but less good than a mixture of carbon and cornstarch. Meanwhile, the results of purification with cornstarch are visually clear but have less good physical properties compared to the previous variables.