Lecture Notes Ppt — Pharmacognosy

: Unorganized mass of dividing cells grown on a solid agar medium.

┌────────────────────────────────────────┐ │ Crude Drug Classification │ └───────────────────┬────────────────────┘ │ ┌────────────────────────────┼────────────────────────────┐ ▼ ▼ ▼ Alphabetical Taxonomic/Botanical Morphological (A-Z by Latin/English) (Family, Genus, Species) (Organized vs Unorganized) │ │ │ ├────────────────────────────┼────────────────────────────┘ ▼ ▼ Pharmacological Chemical (Therapeutic Effect) (Active Constituents) 1. Alphabetical Classification

Phytochemistry involves the study of chemicals (mainly the secondary metabolites) that plants produce as a measure to protect themselves from insects, pests, pathogens, herbivores, UV exposure, and environmental hazards. In pharmacognosy, a systematic study of a crude drug is performed by examining various parameters, including its common name, botanical or biological source, and chemical constituents. Lecture notes in this area cover the major classes of phytochemicals—alkaloids, glycosides, tannins, flavonoids, terpenoids, essential oils, resins, and others—including their chemical structures, properties, and biological activities.

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: Grouped by phylum, order, family, genus, and species. pharmacognosy lecture notes ppt

: Notes usually cover everything from ancient Egyptian medicine (3000 B.C.) to modern drug discovery.

Arranging drugs by English or Latin names (e.g., Acacia , Aloe ).

Outdated nomenclature. Fix: Verify that plant binomial names match the latest Plant List (e.g., Cassia angustifolia is now Senna alexandrina ).

Pharmacognosy is the branch of science that deals with the study of medicines derived from natural sources—primarily plants, but also animals and microorganisms. The term originates from the Greek words pharmakon (remedy or drug) and gnosis (knowledge), and was first introduced in 1815 by C. A. Seydler. Whether you are a student preparing for exams or an educator designing course materials, having access to well-organized pharmacognosy lecture notes and PowerPoint (PPT) presentations is essential. This comprehensive guide covers the core topics you need, the best places to find high-quality materials, and practical tips for creating your own presentations. : Unorganized mass of dividing cells grown on

: Certain plants require specific elevations (e.g., Cinchona grows best at high altitudes).

: Stops enzymatic degradation and prevents microbial growth.

Compounds that hydrolyze into a sugar moiety (glycone) and a non-sugar moiety (aglycone). Key Categories:

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: It spans botany, chemistry, biotechnology, and pharmacology.

Classification of crude drugs, medicinal plant cultivation, and quality control. 2. Classification of Crude Drugs

: Classification of plant hairs (glandular vs. non-glandular). 3. Physical Evaluation Uses physical constants to check purity.

Halts enzymatic degradation and prevents microbial growth. Sun drying: For sturdy materials like roots and seeds. In pharmacognosy, a systematic study of a crude