Extraction-spectrophotometric determination of purine alkaloids in water solutions using aliphatic alcohols

For extraction of caffeine, theobromin and theophylline from water solutions are applied aliphatic alcohols С3 - С9. Water concentrates analyzed method UF- spectrophotometry. Factors of distribution and extraction degree are calculated. Influence of length of a hydrocarbonic radical in a solvent and nature olecule salting-out agent on interphase distribution of alkaloids is studied. Dependence of quantitative characteristics extraction from number active groups in structure alkaloids is established.