Isolation of Natural Products

Plant had been used as medicine in ancient. Now day’s Pharmaceutical companies start processing of medicinal
and aromatic plants in their formulation by using extraction of active components. Extraction of plant
components likes volatile, Essential or ethereal oils and mixtures composed of volatile liquid and solid
compounds depend upon their composition and their boiling point. Now days there are several processes like
distillation, enfleurage, maceration, expression, solvent extraction and fluid extraction are available for
extraction of plant component. This review also summarizes the characters of phytoconstituents, choice of
solvents, influence of solvents, extraction strategy, procedures for extraction of herbal drugs and treatment of
drug residue after extraction.