Pharmacognosy Lecture Notes: Ppt

: Solid or semi-solid amorphous plant exudates (e.g., Podophyllum, Ginger). 4. Evaluation and Quality Control of Crude Drugs

: Paracytic (senna), diacytic (peppermint), anisocytic (datura).

Plants produce two types of compounds: primary metabolites (carbohydrates, proteins, lipids) essential for survival, and secondary metabolites, which protect the plant and provide medicinal properties.

: Evaluates the amount of active constituents soluble in specific solvents (alcohol-soluble, water-soluble). 4. Chemical Evaluation pharmacognosy lecture notes ppt

: Compounds that hydrolyze to yield one or more sugar portions (glycone) and a non-sugar portion (aglycone or genin).

Groups drugs according to their primary therapeutic action or clinical use.

Advanced PPTs often delve into the science of how plants actually make these complex molecules. You'll see diagrams explaining the Shikimic acid pathway , the Acetate-Mevalonate pathway , and how tracer techniques help scientists follow metabolic routes in plant cells. : Solid or semi-solid amorphous plant exudates (e

: Qualitative color tests and quantitative assays to isolate exact molecules.

: A five-volume Greek encyclopedia describing over 600 plants, serving as the precursor to modern pharmacopeias.

Arranged by Latin or English names (e.g., Acacia, Benzoin, Cinchona). Easy to locate. Cons: No scientific or chemical correlation. 2. Taxonomic Classification Plants produce two types of compounds: primary metabolites

: Found as needles (raphides), prisms, or clusters. 3. Physical Evaluation

The modern approach linking chemical constituents to taxonomic botanical families. High-Yield Phytochemistry: Secondary Metabolites

Solanaceae family includes Datura, Belladonna, and Hyoscyamus. 3. Morphological Classification