| Component | Description |
|---|---|
| Tea polyphenols | Main active component, accounting for 30%~95% of the extract content |
| EGCG (Epigallocatechin gallate) | The most core monomer among tea polyphenols, the main antioxidant force |
| Caffeine | Content controllable by process (can be removed) |
| Theanine, tea polysaccharides, tea saponin | Synergistic functional components |
| Grade | Tea Polyphenol Content | Typical Application |
|---|---|---|
| Conventional | 30%~60% | Food and beverage addition |
| High purity | 80%~95% | Health food, pharmaceuticals |
| EGCG standard | EGCG 30%~90% | Functional food, personal care |
Green tea extract is a natural botanical ingredient obtained from premium green tea leaves through extraction, concentration and purification. Its key functional components are tea polyphenols, with EGCG (epigallocatechin gallate) as the most representative monomer. Thanks to its antioxidant properties and broad compatibility, it is one of the most widely used plant extracts in food, beverage, health food, personal care and pharmaceutical applications.
The product is manufactured under a controlled process with multiple critical control points (CCP) to ensure consistent quality and safety:
| Step | Process | Process Control |
|---|---|---|
| 1 | Raw material inspection (CCP1) | Incoming materials tested before use |
| 2 | Extraction | Water solvent, controlled temperature and time |
| 3 | Filtration | Removal of insoluble residues |
| 4 | Column separation | Ethanol / water system |
| 5 | Concentration | Controlled temperature and relative density |
| 6 | Sterilization (CCP2) | Controlled temperature and time |
| 7 | Spray drying | Controlled inlet temperature |
| 8 | Crushing & sieving | Mesh size controlled |
| 9 | Mixing | Time controlled for homogeneity |
| 10 | Metal detection (CCP3) | Metal contamination screening |
| 11 | Packaging | Packing materials tested before use |
| 12 | Storage | Warehouse controlled conditions |
Basic information of the representative batch: product Green Tea Extract; plant part used: leaf; plant Latin name: Camellia sinensis O. Ktze.; country of origin: China; extraction solvent: water and ethanol; shelf life: 3 years.
| Characteristic | Standard | Result | Method |
|---|---|---|---|
| Appearance | Light yellow brownish powder, no visible foreign matters | Complied | Visual |
| Bulk density | 0.25~0.65 g/mL | 0.34 g/mL | USP<616> |
| Particle size | 100% pass through 80 mesh | Complied | USP<786> |
| Loss on drying | ≤5.0% | 2.8% | USP<731> |
| Acid-insoluble ash | ≤5.0% | <0.1% | USP<561> |
| Polyphenols | ≥98.0% | 99.9% | UV |
| EGCG | ≥45.0% | 46.3% | HPLC |
| Lead | ≤3.0 mg/kg | Complied | USP<233> |
| Arsenic | ≤1.0 mg/kg | Complied | USP<233> |
| Mercury | ≤0.1 mg/kg | Complied | USP<233> |
| Ethanol residue | ≤5000 mg/kg | <50 mg/kg | GC |
Microbiological specifications
| Item | Standard | Result | Method |
|---|---|---|---|
| Total aerobic count (CFU/g) | ≤1000 | Complied | USP<2021> |
| Mold and yeast (CFU/g) | ≤100 | Complied | USP<2021> |
| Coliform (MPN/g) | ≤3 | Complied | AOAC 966.24 |
| Salmonella | Negative/10g | Complied | USP<2022> |
Statements: Non-Irradiated, Non-GMO. As a natural product, slight color variations from lot to lot may occur due to crop fluctuations from harvest to harvest.
The catechin composition of the EGCG standard grade is verified by HPLC analysis (detection at 278 nm). In the representative chromatogram, EGCG is the predominant catechin (peak area about 64%), followed by ECG, GCG, EGC and EC, confirming the high EGCG content and consistent composition of the product.
| Item | Specification |
|---|---|
| Appearance | Light yellow to brownish yellow powder |
| Solubility | Easily soluble in water and ethanol |
| Particle size | 100% pass through 80 mesh |
| Reference standard | GB/T 31740.2 (tea products standard) |
| Shelf life | 3 years |
Store the product sealed, away from light and moisture; low temperature storage is preferred. Please keep the packaging closed after use to maintain product quality. Wearing of protective goggles or safety glasses is recommended during handling; wash skin with soap and water upon contact.
Different grades and specifications are available to suit different applications. For specification sheets, COA, MSDS, test reports, samples or further technical information, please contact us and we will be glad to assist.
