In the extraction of TC(Trichilia connaroides) by solvent(s), the former is reacted with acidic plant matter such as, for example, amla fruit matter(Emblica officinalis) which converts some of the insoluble principles therein into soluble forms, thus enhancing the extraction range and yield. In extraction by water, the adoption of amla fruit matter increases the TC principles yield from about 10% to about 12% by wt., of the saponins from about 8.2% to about 12.3% by wt. and of the terpenes from about 1.1% to about 3.9% by wt. The corresponding yield figures in extraction by aq. ethanol, respectively with and without the adoption of amla fruit matter are 14%, 15.6% and 5.5% by wt. and 8%, 11.1% and 4.1% by wt. for the three sets of compounds respectively. With both solvents, the adoption of amla increases the yields, said increases being greater in the case of aq. ethanol.
