Green Tea Extract is a botanical extract derived from Camellia sinensis leaves, standardized to EGCG. With CAS registry number 989-51-5, this ingredient belongs to the Fat Oxidation & Thermogenesis category of weight management actives. EGCG activates AMPK pathway, shifting cellular metabolism from fat storage to fat oxidation. It also inhibits digestive lipases (reducing dietary fat absorption) and suppresses adipocyte differentiation by downregulating PPARγ and C/EBPα transcription factors. This triple mechanism makes green tea extract one of the most comprehensive botanical weight-loss ingredients. As a B2B manufacturer, Shaanxi Baisifu Biological Engineering Co., Ltd. supplies Green Tea Extract in bulk quantities with full Certificate of Analysis (COA), ensuring consistent EGCG content and regulatory compliance for dietary supplement, functional food, and nutraceutical applications.
Standard specifications for Green Tea Extract bulk supply from Baisifu:
EGCG activates AMPK pathway, shifting cellular metabolism from fat storage to fat oxidation. It also inhibits digestive lipases (reducing dietary fat absorption) and suppresses adipocyte differentiation by downregulating PPARγ and C/EBPα transcription factors. This triple mechanism makes green tea extract one of the most comprehensive botanical weight-loss ingredients.
Level I evidence. Multiple RCTs demonstrate EGCG+caffeine increases metabolic rate by 4-5% and enhances 24-hour energy expenditure. Hursel et al. (2011) meta-analysis of 15 RCTs found 1-2 kg weight loss over 3 months. Long-term studies (6-12 months) confirm sustained body fat reduction.
FDA GRAS. Safe at ≤800 mg EGCG/day. High doses (>1,500 mg EGCG/day) may pose hepatotoxicity risk. Mild GI discomfort possible. Not recommended for pregnant/lactating women at supplement doses.
Shaanxi Baisifu Biological Engineering Co., Ltd. manufactures and supplies Green Tea Extract (CAS 989-51-5) in bulk quantities for: • Dietary supplement manufacturers (capsules, softgels, tablets, powders)
• Functional food & beverage producers
• Nutraceutical brands seeking EGCG standardized ingredient
• Cosmetics companies (anti-cellulite, metabolic support topical) Each batch includes full Certificate of Analysis (COA) with:
• EGCG content verification (HPLC/UV)
• Heavy metals, microbial, moisture compliance
• Pesticide residue testing (where applicable)
• Stability data and shelf life confirmation Available forms: powder extract, oil-based softgel fill, microencapsulated powder
Minimum order: 1 kg (sample quantities available)
Lead time: 7–15 business days
Packaging: 25 kg/drum, double-layer PE bag + fiber drum, nitrogen flush available
Q1: What is the recommended dosage of Green Tea Extract for weight loss?
300-500 mg EGCG per day, delivered as 50% EGCG extract at 600-1,000 mg total extract per day. Do not exceed 800 mg EGCG daily without medical supervision. Best results when combined with exercise.
Q2: Does Green Tea Extract work without exercise?
EGCG modestly increases resting metabolic rate alone, but the effect is 2× greater when combined with regular aerobic exercise.
Q3: What is the difference between EGCG and Green Tea Extract?
Green Tea Extract is the whole-plant extract. EGCG is the most bioactive catechin within it. A "50% EGCG" specification means ≥50% EGCG by weight — the industry standard for weight-loss formulations.
Q4: Is Green Tea Extract safe for long-term use?
Yes at ≤800 mg EGCG/day. Studies up to 12 months show no adverse effects. Intermittent use (8-12 weeks on, 2-4 weeks off) is a common practitioner recommendation.
Q5: How should I store Green Tea Extract bulk powder?
Cool, dry, dark place at ≤25°C. EGCG degrades with light, heat, moisture. Sealed aluminum foil bags with nitrogen flush recommended. Shelf life: 24 months.
For complementary weight management formulations, consider combining Green Tea Extract with: Capsaicin, L-Carnitine, Lotus Leaf Extract, Fucoxanthin. Multi-ingredient stacks targeting different mechanisms (lipase inhibition, AMPK activation, thermogenesis, appetite suppression) produce synergistic effects superior to single-ingredient products.
About Baisifu: Shaanxi Baisifu Biological Engineering Co., Ltd. (No.69, Jinye Road, Xi'an, 710065, Shaanxi, China | Tel: 0086-29-81110978) is a GMP/ISO-certified manufacturer of botanical extracts, food flavors, amino acids, peptides, and biopesticides with 1,000+ products exported to US/EU B2B markets.
Disclaimer: This content is for informational and B2B product development purposes only. Green Tea Extract (CAS 989-51-5) is a raw ingredient for dietary supplement and functional food formulation, not a finished consumer product. Claims cited are from published research and regulatory approvals — they do not constitute medical advice or guarantee specific outcomes. Consult regulatory experts for target market compliance.
| Parameter | Specification |
|---|---|
| EGCG | 50%+ (HPLC) |
| Tea Polyphenols | ≥30% |
| Caffeine | 5–8% |
| Appearance | Light yellow to brown powder |
| Solubility | Water-soluble |
| Particle Size | 80 mesh |
| Moisture | ≤5% |
| Heavy Metals | ≤10 ppm |
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