Pharmacognosy Lecture Notes Ppt 〈2024〉

Anthraquinone Glycosides: Exert a stimulant laxative effect (e.g., Sennosides from Senna).

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Bitter taste, precipitate with alkaloidal reagents (Mayer’s, Dragendorff’s). Key Examples: Morphine: Analgesic (Opium poppy) Quinine: Antimalarial (Cinchona bark) Atropine: Anticholinergic (Deadly Nightshade) Glycosides pharmacognosy lecture notes ppt

Alkaloids are basic nitrogenous compounds, typically derived from amino acids, which exert profound physiological effects on humans.

: Reduces moisture content below 10% to prevent enzymatic degradation and mold growth. Sun drying : Used for sturdy materials like barks and seeds. Consistency in visual design helps the audience focus

Avoid "answer-key" websites that offer instant downloads without author attribution. Many contain dangerous outdated information (e.g., listing Colchicum for gout without the narrow therapeutic index warning).

Trichomes (plant hairs), stomata types (anomocytic, paracytic), calcium oxalate crystals, and starch granules. : Reduces moisture content below 10% to prevent

Removes moisture to prevent enzymatic degradation, mold growth, and chemical hydrolysis. Methods include sun-drying, shade-drying, and tray-drying.