Green Tea Extract | EGCG | Antioxidant | Camellia sinensis

Product Name: Green Tea Extract (Camellia sinensis)
Source: Leaves of Camellia sinensis
Active Components: Catechins, primarily epigallocatechin-3-gallate (EGCG)
EGCG Content: 40–60% of total catechins
Appearance: Dark green powder
Solubility: Moderately soluble in water; better soluble in hot water and alcohol solutions
Stability: Store in a cool, dark place

1. Introduction

Green tea extract (Camellia sinensis leaves) is rich in catechins, particularly epigallocatechin-3-gallate (EGCG). It possesses potent antioxidant, anti-inflammatory, and metabolic activity.

Green tea retains up to 30% catechins by dry weight. EGCG is the leading active polyphenol, influencing oxidative stress, thermogenesis, and lipid metabolism.

2. Structure and Production

Epigallocatechin-3-gallate (EGCG): C₂₂H₁₈O₁₁ – flavan-3-ol with a gallate group.

Production: Extraction with warm water or 50–70% ethanol, purification, concentration, and lyophilization.

3. Properties

• Appearance: Dark green powder

• Solubility: Moderately soluble in water; better soluble in hot water and alcohol solutions

• EGCG content: 40–60% of total catechins

• Stability: Store in a cool, dark place

4. Applications

• Antioxidant protection – neuroprotection, cardioprotection

• Metabolic support and weight management – thermogenesis

• Nootropic and anti-inflammatory formulations

5. Conclusion

Green tea extract is a highly concentrated source of EGCG with a wide range of clinically proven effects. The standard dose of EGCG is 300–500 mg per day.