Physicochemical characterization and fatty acid profiles of fish oil from milkfish (Chanos chanos F.)

Abstract

Indonesian local fish including Milkfish (Chanos chanos) is a potential source of fish oil. It is well known that fish oil contains polyunsaturated fatty acids (PUFA) having health benefits. The objective of this study was to perform physicochemical characterisation and fatty acid profile of milkfish oil. This study used fish oil extracted from the head and flesh of milkfish using wet rendering. All samples were extracted at low temperature with pressing and are subjected to centrifugation. The result showed that milkfish flesh oil (MFO) and milkfish head oil (MHO) revealed significantly different parameters (p<0.05) in terms of physicochemical characteristics including acid value, peroxide value, iodine value, and saponification value. The acid value, peroxide, iodine and saponification values of MFO were 0.5 mg KOH/g, 6.8 meqO2/kg, 95.3 g I2/100 g and 183.9 mg KOH/g, respectively. The values for MHO were 0.7 mg KOH/g, 8.7 meqO2/kg, 101.8 g I2/100 g, and 200.7 mg KOH/g. The predominant fatty acids in MHO and MFO were palmitic, oleic and linoleic. MFO and MHO are found suitable to be consumed for beneficial health effects.