A Case Study on Preliminary Phytochemical Screening Successive Solvent Extraction

The crude drug was dried when it is subjected for extraction using another solvent. The previous solvent should be removed completely and powder should be dried totally. It prevents the mixing of the previous solvent into another solvent. After the complete extraction, solvent were evaporated on rotary evaporator and solvent was removed, the extract thus obtained with 95% alcoholic solvent was measured. The extract was stored in desiccator. Preliminary qualitative tests going with procedures were acclimated to tests for acknowledgment of various compound constituents in each di