BP105T • Unit 2Topic 1 of 2⏱ 5 Min Read

1. Morphological Classification: Organized vs. Unorganized Crude Drugs

💡 Core Concept & Clinical Context:

Morphological classification organizes crude drugs based on the physical plant/animal organ or anatomical part represented. Crude drugs are fundamentally divided into two major classes: (1) Organized Drugs (Cellular drugs) — direct cellular anatomical parts of plants/animals (e.g. roots, barks, leaves, flowers, seeds, woods) displaying well-defined microscopic cellular histology (stomata, trichomes, xylem vessels), and (2) Unorganized Drugs (Acellular drugs) — non-cellular derived substances obtained through extraction, incisions, distillation, or exudation (e.g. dried juices, latex, extracts, gums, resins, fixed oils, volatile oils, waxes) displaying no cellular histological organization.

Clinical Scenarios & Pharmacopoeial Examples:

1Comprehensive Morphological Catalog of Organized and Unorganized Drugs

Anatomical categories with official pharmaceutical examples.

Step-by-Step Breakdown:

•A. ORGANIZED (CELLULAR) CRUDE DRUGS:

•• Leaves: Senna (Cassia angustifolia), Digitalis (Digitalis purpurea), Vasaka (Adhatoda vasica).

•• Barks: Cinchona (Cinchona succirubra), Cinnamon (Cinnamomum zeylanicum), Kurchi (Holarrhena antidysenterica).

•• Roots & Rhizomes: Rauwolfia (Rauwolfia serpentina), Ginger (Zingiber officinale), Turmeric (Curcuma longa).

•• Flowers: Clove (Syzygium aromaticum - flower bud), Saffron (Crocus sativus - stigma/style).

•• Fruits: Fennel (Foeniculum vulgare), Coriander (Coriandrum sativum), Senna pod.

•• Seeds: Nux Vomica (Strychnos nux-vomica), Castor seed (Ricinus communis), Ispaghula (Plantago ovata).

•B. UNORGANIZED (ACELLULAR) CRUDE DRUGS:

•• Dried Juices: Aloe (Aloe barbadensis), Kino (Pterocarpus marsupium).

•• Dried Latex: Opium (Papaver somniferum).

•• Dried Extracts: Agar (Gelidium amansii), Catechu (Black catechu / Pale catechu).

•• Gums: Acacia (Acacia senegal), Tragacanth (Astragalus gummifer).

•• Resins / Oleoresins: Asafoetida (Ferula foetida), Benzoin (Styrax benzoin), Ginger oleoresin.

•• Volatile Oils: Clove oil, Peppermint oil, Eucalyptus oil.

•• Fixed Oils & Fats: Castor oil, Olive oil, Arachis oil, Wool fat, Beeswax.

Comparison & Reference Table:

Morphological Class	Cellular Structure?	Extraction / Preparation Method	Representative Pharmacopoeial Examples
Leaves (Organized)	Yes (Epidermis, stomata, mesophyll)	Harvested, garbled, shade-dried	Digitalis, Senna, Vasaka, Belladonna
Barks (Organized)	Yes (Cork, cortex, phloem, fibers)	Stripped from tree trunks/branches	Cinchona, Cinnamon, Arjuna, Kurchi
Roots/Rhizomes (Organized)	Yes (Vascular bundles, xylem, starch)	Excavated, washed, dried	Rauwolfia, Ginger, Glycyrrhiza, Ipecac
Dried Juices / Latex (Unorganized)	No (Acellular amorphous solid)	Incision of plant organ -> Evaporation	Opium (latex), Aloe (inspissated juice)
Gums (Unorganized)	No (Acellular hydrocolloids)	Exudation after plant trauma/injury	Acacia gum, Tragacanth, Karaya gum
Resins (Unorganized)	No (Acellular lipophilic mixture)	Secretory cavities / solvent extraction	Asafoetida, Benzoin, Myrrh, Colophony

📋Key Takeaways & Exam Highlights

Organized Drugs: Have direct anatomical cellular structure; evaluated by microscopic transverse section (T.S.).
Unorganized Drugs: Acellular secretions or extracts; evaluated by chemical solubility, refractive index, and specific gravity tests.
Advantage of Morphological Scheme: Very practical for field collection and quick visual identification of plant parts.

🇮🇳 हिन्दी व्याख्या (1. Morphological Classification: Organized vs. Unorganized Crude Drugs)

Organized (ऑर्गेनाइज़्ड) दवाएं पौधे के असली अंग होते हैं जिनमें कोशिकाएं (Cells) दिखती हैं जैसे पत्तियां (Senna), छाल (Cinchona), और जड़ें (Rauwolfia)। Unorganized दवाएं पौधे से निकलने वाले रस, गोंद (Acacia), या तेल (Clove oil) होते हैं जिनमें कोशिकाएं नहीं होतीं।