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ABSTRACT
This article presents a brief review of the research conducted at Laboratory of Pharmaceutical Processes of the Faculty of Pharmaceutical Sciences of Ribeirão Preto/São Paulo University, aiming to obtain standardized dried extracts from medicinal Brazilian plants. The spray and spouted-bed dryer performance and physicochemical product properties during the drying of hydro-alcoholic extracts of three plants used in the Brazilian traditional medicine, namely, Passiflora alata, Bauhinia forficata, and Maytenus ilicifolia, are evaluated comparatively.
ACKNOWLEDGMENTS
We express our gratitude to FAPESP for the financial support (Proc. 03/08317-1, 04/07748-1, and 01/10140-7).
Notes
∗H0: static bed height; Tgi: inlet gas temperature; γ: conical base angle; Ws/Wmax: mass flow rate of extract relative to evaporation capacity of the dryer; Q/Qjm: spouting gas flow rate relative to gas flow at minimum spouting.
∗Total flavonoids: B. forficata and P. alata; Total tannins: M. ilicifolia.
∗Total flavonoids: B. forficata and P.alata; Total tannins: M. ilicifolia (wet basis).
∗Concentration of the chemical marker.
#Thermal degradation of the active compounds.
∗Ac = accumulation rate.
