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Abstract

EXTRACTION AND PHYSICOCHEMICAL ANALYSIS OF OIL EXTRACTED FROM PINEAPPLE (ANANAS COMOSUS) PEELS

Orodu V. E.* and Inengite A. K.

ABSTRACT

The extraction of oil from waste pineapple (Ananas comosus) peels was carried out to determine if the oil extracted from pineapple peels is edible and/or can be utilized in industries by determining it’s physicochemical properties. The Pineapple peels were collected from different locations in Amassoma, Bayelsa State. The sample was sun dried for five days and oven dried for 1hr: 30mins, then ground thoroughly. The sample was dipped inside n-hexane for 72 hours and later placed in a water bath for the evaporation of the solvent. Tests on Free Fatty acid, (FFA), Saponification Values, (SV), Iodine Value(IV), Peroxide Value(PV), and Acid Value were carried out in triplicates and the mean results were obtained; FFA = 2.068 mg/KOH/g, SV = 226.27mg/KOH/g, IV = 37.4355g/100g, PV = 7.666meq/kg, AV = 4.11532mg/KOH/g. In comparing these physicochemical parameters with the standards given by the Nigerian Industrial Standards (NIS), it was observed that the content of FFA was above the range, SV and IV were below the range, PV was within the range and AV was above the range. In Conclusion, it can be said that the oil is fit for human consumption because SV, IV, and PV are within the range stated by (NIS), whereas the excess of FFA and AV are good for industrial purposes and can be utilized.

Keywords: Pineapple peels, waste, oil, physiochemical parameters, consumption.


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