Phenylpropanoids & Flavonoids Notes - B.Pharm Sem 5
Download PDF Notes covering:
- Biosynthesis pathways
- Structural classification
- Medicinal plants analysis
- Phytochemical screening methods
Keywords: Flavonoids PDF notes, Pharmacognosy 2 study material, Phenylpropanoid pathway, B.Pharm sem 5 PPT, Plant secondary metabolites
Comprehensive Study of Phenylpropanoids & Flavonoids
1. Introduction to Phenolic Compounds
Phenylpropanoids and flavonoids are plant-derived phenolic compounds with:
- C6-C3 basic skeleton (phenylpropanoids)
- C6-C3-C6 structure (flavonoids)
- Antioxidant and anti-inflammatory properties
2. Biosynthesis Pathways
| Pathway | Key Enzymes | End Products |
|---|---|---|
| Shikimate | PAL enzyme | Cinnamic acid |
| Phenylpropanoid | 4CL | Coumarins, Lignins |
| Flavonoid | CHS | Quercetin, Rutin |
3. Medicinal Applications
- Anticancer: Genistein, Silymarin
- Cardioprotective: Resveratrol
- Antimicrobial: Curcumin
- Vasoactive: Hesperidin
4. Chemical Characterization
- Shinoda test for flavonoids
- Ferric chloride test for phenolics
- UV-Vis spectral analysis
- HPLC fingerprinting
5. Important Drug Sources
- Ginkgo biloba: Flavone glycosides
- Turmeric: Curcuminoids
- Green tea: Catechins
- Buckwheat: Rutin
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