Pemurnian Minyak Ikan Sardin (Sardinella sp.): Sentrifugasi dan Adsorben Bentonit

Abstract

Centrifugation and purification using adsorbents is one example of a fish oil refining techniques applied to reduce impurities of fish oil. The study aimed to determine the sardine oil quality before treatment, to determine yield of fish oil after centrifugation treatment, to determine the influence of centrifugation speed and bentonite concentration on sardine oil quality. Level of free fatty acids and peroxide value before purification was 35.53% and 170 meq/kg. Yield of fish oil after centrifugation treatment has been ranged from 17.42±3.56 to 76.33±0.21%. The best treatment which could reduce the peroxide value and total oxidation was a treatment with centrifugation speed at 6500 rpm and bentonite concentration at 3%. Peroxide value and total oxidation of its treatment was 25.00±0.00 meq/kg and 51.43±0.01 meq/kg. The lowest value of p-anisidine was 1.29±0.05 meq/kg and its value could be found in a treatment with centrifugation speed at 4500 rpm and bentonite concentration at 5%. The level of free fatty acids after purification process was ranged from 27.35 to 34.69%. Oil clarity tended to increase with the increase of speed centrifugation and adsorbent concentration.