PHYSICOCHEMICAL CHARACTERIZATION AND EVALUATION OF ANTIOXIDANT ACTIVITY OF OIL FROM Euterpe precatoria Mart. OBTAINED BY DIFFERENT METHODS OF EXTRACTION ABSTRACT

Abstract

Department, according to their morphological and proximate analysis; oil was obtained
through different methods, evaluating the extraction yield, physicochemical properties
and antioxidant activity. The morphological results indicate lengths, diameters and fruit
weight equalto1, 324 cm and 1,425cm and 1,797g, respectively. The proximate analysis was
performed to dry pulp, which was used to extract the oil. The ash content was similar to that
reported for the species Euterpe olaraceae Mart. The total lipid content was higher than that
described a lipid content of 11,5% in untreated pulp, but lower than that reported (37%) in
other studies. Yield by enzymatic pre-pressing and pressing treatment was 31,9% and 35,3%
respectively. However, a statistically significant difference when compared yield was not
determined. The solvent extraction yield was 42,6% and was observed differences in color
intensity and IC50. The IC50 of the oil obtained by pressing and enzymatic pretreatment was
6,97mg/mL and 3,61mg/mL, respectively; the best result was solvent extraction IC50 1,82 mg/
mL; however, none of the extracts showed greater activity than Trolox(IC 500,001mg/ mL).
The total phenolic content of oils obtained was higher than the results reported E.oleracea
Mart, with a greater presence of phenolic compounds in the species E.precatoria. Confirming
reported to prevalence of phenolic compounds in E.precatoria compared to E.oleraceae.