Page 29 - Applied Pharmacognosy
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What do we mean by Chemical Analysis?
❑ It is the separation of a mixture of
compounds followed by identification &
quantification of each component if possible.
Methods of Separation of Active Constituents
Sublimation Fractional distillation
❑ Solid ∆ Gas ❑ For separation of components of
Ex. Caffeine volatile oil mixture according to
their B.P.
Fractional crystallization
Chromatography
❑ It depends on differences in ❑ It is the optimal choice with
solubility of components of a
mixture in a particular solvent. a variety of applications.
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