Active principles purification and concentration
The delicate phase of the study e' the elaboration and identification princi active of the technique in order to obtain their maximum Active principles purification and concentration. Le Dyes Mothers and the Fluid Extracts little have weight from the farmacologico point of view, and turn out difficult to succeed to estimate some and to determine of the effect. Moreover, the preparations totals contain hundred of active principles, for which e' difficult the standardization, cioe' the extraction that guarantees one they constant concentration.
Active principles purification and concentration
In other cases puo' to proceed to the Active principles purification and concentration with the crystallization, the use of appropriates dissolvents to you, is made chromatographic (rendered some to adsorption). For the separation of the colchicina from the colchico, 10 passages of extraction with successive crystallizations are carried out.