Install our extension to search inside any video instantly.

TG PGECET Pharmacognosy-I Super 100 Series | Vijaya Prasthanam 2.0 | Most Expected Questions 2026

Added:
569 views26likes1:57:30GDCPharmaOriginal Release: 2026-05-30

Pharmacognosy is the study of drugs derived from natural sources, derived from Greek words 'pharmakon' (drug) and 'gnosis' (knowledge). Drugs are classified based on chemical content, with chemical classification being one of several methods including alphabetical, taxonomical, morphological, and pharmacological classification. Adulteration conditions include spoilage, admixture, substitution, sophification, and inferiority. Evaluation methods include organoleptic, microscopical, chemical, physical, and biological evaluation. Alkaloids are nitrogen-containing heterocyclic compounds, with true alkaloids having nitrogen in the ring structure and originating from amino acids, while pseudoalkaloids have nitrogen adjacent to the ring. Glycosides are classified by the atom in the glycosidic bond: O-glycosides (senna, rhubarb), C-glycosides (aloes, cascara), N-glycosides (nucleotides), and S-glycosides (sinigrin). Tannins are non-nitrogenous polyphenolic compounds with astringent properties.