Avalia？？o das características físico-químicas e fitoquímicas de diferentes tinturas de barbatim？o (Stryphnodendron barbatiman)

as a consequence of the large distribution and use of medicinal plants, the industries are producing products based on plant species in various pharmaceutical forms, which have been commercialized in pharmacies and natural products homes. however, there is no guarantee for the vast majority of these products, as to their effectiveness, safety and quality, which may cause risks to the health of consumers. therefore it is important the establishment of standardized protocols of quality control for phytotherapeutic products. tinctures of barbatim？o are available in the brazilian market proceeding from diverse manufacturers. with the purpose to evaluate the difference between the quality of tinctures of barbatim？o proceeding from four manufacturers, a comparative study of physico-chemical and phytochemical characteristics was carried out. for physico-chemical analysis, the ph, density, dry residue and tannins content were evaluated. the phytochemical analysis was made using thin layer chromatography. the differences observed in physico-chemical and phytochemical characteristics had evidenced the lack of standardization in the production of these tinctures.