What is your ? (Undergraduate, Graduate, or Professional)

┌──────────────────────────────┐ │ Classification Methods │ └──────────────┬───────────────┘ │ ┌───────────────┬───────┼───────┬───────────────┐ ▼ ▼ ▼ ▼ ▼ Alphabetical Taxonomic Morphological Chemical Therapeutic 1. Alphabetical Classification : Arranged by Latin or English names. Examples : Acacia, Benzoin, Cinchona, Digitalis. Pro : Simple to use and update. Con : No scientific or chemical correlation. 2. Taxonomic (Biological) Classification

: Reduces moisture content below 10% to prevent fungal growth and enzyme degradation. Sun Drying : Used for durable drugs (e.g., seeds, fruits).

Example : Digitalis leaves are collected in the afternoon when glycoside levels peak.

Examples: Carbohydrates (starch, cellulose), Proteins (enzymes), and Lipids (fixed oils). Secondary Metabolites

While every syllabus varies, most pharmacognosy lecture notes PPTs follow a standard progression of topics.

| | Source Example | Pharmaceutical Use | | :--- | :--- | :--- | | Carbohydrates | Acacia gum, Starch | Suspending agent, tablet binder/disintegrant, demulcent. | | Lipids (Fixed Oils & Waxes) | Castor oil, Wool Fat, Bees Wax | Laxative (Castor oil), ointment base (Wool Fat, Bees Wax). | | Proteins & Enzymes | Gelatin, Papain | Capsule shell (Gelatin), digestive aid (Papain). |

Before diving into specific topics, let’s address why the PPT format dominates pharmacognosy education.

: Odorous, volatile principles that evaporate at room temperature.

This interdisciplinary area studies the traditional knowledge of indigenous peoples regarding the use of plants for medicinal purposes. Lecture notes often highlight how traditional knowledge serves as a valuable starting point for drug discovery.

: Clove oil (antiseptic), Peppermint oil (carminative). Tannins & Resins

Pharmacognosy, phytochemistry, natural products, extraction, chromatography, herbal medicine, quality control, bioassays, drug discovery

Utilizing human sensory organs to assess color, odor, taste, size, shape, and surface texture. 2. Microscopic Evaluation