Characterization of pili (Canarium ovatum) pulp and nut oil

Date

5-1989

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Lilia S. P. Madamba

Abstract

The oil of the fruit pulp and nut of two Pili varieties (Canarium ovatum, var. Mabunga and var. Tree *2) were extracted with petroleum ether and chloroform-methanol (2:1). The oil content of the pulp and nut ranges from 10.27 - 19.21 % (w/w)and 82.80 - 86.43 7. (w/w), respectively. The oils were characterized in terms of specific gravity, refractive index, saponification value, iodine number, hydroxyl value and amount of unsaponifiable matter. The results showed that the pulp and nut oils have specific gravity of 0.9001 - 0.9931 and 0.8943 - 0.9997, refractive index of 1.4520 - 1.4625, saponification value of 167 - 184 and 183 - 194, iodine number of 70.2 -70.3 and 49.2 - 52.8, hydroxyl value of 0.00 and 7.5 - 36.2, and unsaponifiable matter content of 1.12 - 1.88 % and 0.47 - 0.75 7., respectively. Fatty acid analysis using gas-liquid chromatography revealed that the predominant acid for the pulp and nut oil is oleic acid, 69.4-80.6 and 46.7-57.4% (w/w), respectively. The other major fatty acids identified were palmitic, 13.5-19.6% & 26.8-32.57.; linoleic, 4.6-7.2% & 6.6-8.07.; stearic, 0.01-1.017 & 7.6-13.57.. Palmitoleic acid was present only in the pulp oil. The oils resemble palm oil in terms of fatty acid composition, saponification value and degree of unsaturation. It may therefore be a good substitute for palm oil. Moreover, the nut oil contains linoleic acid which makes it a good additive to other oils that lack this essential fatty acid.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1989 C4 L64

Document Type

Thesis

This document is currently not available here.

Share

COinS