Five compounds identified as friedelin 1, eupha-8, 24- diene 3-β-ol 2, stigmasterol 3, teraxerone 4 and teraxerol 5 have been isolated from Garcinia prainiana (Guttiferae) for the first time. There has been no previous report on the chemical constituents and biological activities of this plant. Compounds 1, 2 & 3 were isolated from the methanol extract of the twigs while compounds 4 & 5 were isolated from the methanol extract of the leaves. The structures for all the compounds were evaluated based on spectroscopic analysis and comparison with the published information in the literature.
The seeds of C. cleomifolia (locally known as kacang hantu) collected along Simpang Pulai - Berinchang Road, Cameron Highlands, was defatted with hexane and the resulting oil was analysed for their physico-chemical properties. The percentage yield of the oil was calculated as 5.3%. The acid value (1.2%), iodine value (85), peroxide value (0.6), saponification value (192.0) and unsaponifiable matter (2.3%) were determined to assess the quality of the oil. The physico-chemical characterisation showed that C. cleomifolia seeds oil is unsaturated semi-drying oil, with high saponifi cation and acidic values. The fatty acid composition of C. cleomifolia seed oil was determined by Gas Chromatography and Gas Chromatography-Mass Spectrometry (ToF). The seed oil of C. cleomifolia contained linoleic acid (57.59%) and palmitic acid (5.07%), the most abundant unsaturated and saturated fatty acids, respectively. The polyunsaturated triacylglycerol (TAG) in C. cleomifolia seed oil determined by reverse phase High performance Liquid Chromatography; contained as PLL (18.04%) followed by POL + SLL (11.92%), OOL (7.04%) and PLLn (6.31%). The melting and cooling point of the oil were 16.22°C and -33.54°C, respectively