This study developed a procedure for extraction and for isolation through ?Partition? of a mixture of six pentacyclic triterpenes from mature green fruit of ?Egyptian? olive cultivar ?Picual?. The fruit contains valuable amounts of pure triterpenic mixture. The percentage of triterpenes, calculated on the gross dried product, is about 0.5 g in 100 g dry weight. Thin-layer analysis for the acetylated triterpenic mixture, gave two acetate groups. One group, as a precipitate, represents the monoacetates of four triterpenic acids identified as oleanolic, ursolic, betulinic and maslinic. The other acetate group, is soluble in the mother liquor, was identified as the diacetates of two dihydroxy triterpenes, erythrodiol and uvaol. Qualitative and quantitative gas chromatographic analysis, for the two acetylated products, successfully separates the six pentacyclic triterpenes as identified above (TLC).
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