Physico-chemical Studies and Fatty acid Composition of Oil Extracted from Black Weevil Larva from Okitipupa Area in Ondo State, Nigeria (Rhynchophorus phoenicis)

Abstract Studies were conducted on the physicochemical activities and fatty acid compositions of oil from larva of black weevil (Rhynchophorus phoenicis). The percentage yield of the sample was high (69.100±0.20 %), this showed that it is an oily insect. The     refractive index and the specific gravity were 1.410±0.01 and 0.9130±0.01 respectively. The results of the Chemical Composition of Oil From Larva of Rhynchophorus phoenicis  (Palm Weevil) indicated that the sample had Acid value (mg/g) 8.970±0.02, Iodine value (g/100g) 13.980±0.05, Peroxide Value (mmol/kg) 9.100±0.02 and Saponification Value (mg/g) 460.520±0.20 respectively. The results of the Fatty acid Composition of Oil from Palm Weevil Lavawere: Myristic Acid (0.0914), Palmitic Acid(14.1912), Palmitolei Acid (0.0496), Margaric Acid (0.1140), Stearic Acid (5.7710), Oleic Acid (23.8556), Linolenic Acid (0.0053) and Arachidic Acid (1.7934) respectively. These results indicated that the Larva of Rhynchophorus phoenicis is unsaturated and can be employed industrially based on the level of the unsaturated fatty acid present.

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Updated: April 28, 2018 — 2:27 am