Abstract
ION EXCHANGE CHROMATOGRAPHY APPLIED TO THE FRACTIONATION OF THE COPAIBA OIL (Copaifera multijuga) AND SACACA (Croton cajucara) EXTRACTS. Plant extracts are usually complex mixtures which contain several molecules of different sizes with varied functional groups. Such extracts are a challenge to the chemist of natural products. Ion exchange chromatography in non-aqueous medium, used for separation of basic or acidic fractions from plant extracts, is an important unit operation in preparative scale separations. Anionic macroporous resin in non-aqueous medium was used with success in this study for separation of the acid fraction of Copaifera multijuga (Copaiba oil), rich in labdanic diterpenes and for the methanolic extract of Croton cajucara (acetyl aleuritoric acid).
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