Page 410 - Applied Pharmacognosy
P. 410
Types of Chemical markers
• For example in Gas Chromatography.
Mixtures of volatile compounds can be
separated and each component’s retention
time on the column can be measured for
identification purposes.
• c- Spectroscopic techniques.
• Example: UV/vis spectroscopy. Quinones,
carotenoids and other conjugated materials
absorb in the UV and visible range.
