Green Tea Extract Polyphenols

Green Tea Extract Polyphenols | 98% Tea Polyphenols Powder | Natural Antioxidant for Food, Nutraceutical & Cosmetic Applications

Shaanxi Hongda Phytochemistry Co., Ltd. is a Green Tea Extract Polyphenols producer and supplier with more than 20 years production experience. Our raw material is from Camellia sinensis leaves from our own high mountain green tea planting base. Our product has a total polyphenols (UV) of 98%, and EGCG concentration of 30% to 95% (HPLC). Factory produced 3,000 tons per year on 10+ production lines. Certifications include cGMP, FSSC22000, KOSHER, HALAL, ISO9001, ISO22000, BRC and ORGANIC (EU/NOP). Delivery Time: 3-7 working days. Package: 25kg/drum, can be customerized. OEM/ODM: Acceptable.

Product Introduction

Green Tea Extract Polyphenols is a concentrated fraction of bioactive catechins obtained from Camellia sinensis leaves by controlled extraction and purification. The extract is a brown-red fine powder. It has a high content of flavan-3-ols, mainly Epigallocatechin gallate (EGCG), Epicatechin gallate (ECG), Epigallocatechin (EGC) and Epicatechin (EC).

This material provides a standardised potency of 98% total polyphenols (UV technique) unlike regular tea granules. It is extremely soluble in water, ethanol and ethyl acetate, making it appropriate for both aqueous and organic formulations.

It also offers a crucial economic advantage: thanks to its superior decaffeination processing, the caffeine levels are below 0.5%, making it appropriate for stimulant-sensitive consumers and clean-label product lines.

Product Specification

COA (Certificate of Analysis)

A full COA, MSDS, and specification sheet are available upon request for each production batch.

Production Process

Shaanxi Hongda employs a controlled multi-stage extraction process:

1. Selection of raw materials - fresh green tea leaves from our monitored cultivation base, tested for pesticides before processing

2. Water/Ethanol Extraction — Solvent ratio optimised for highest production of catechins

3. Filtration & Concentration — Membrane filtration and vacuum concentration

4. Purification – Resin adsorption columns to selectively enrich polyphenols and eliminate contaminants including caffeine.

5. Spray Drying – Controlled temperature spray drying to maintain catechin integrity

6. QC Testing – Full HPLC, UV, heavy metal, microbiological and pesticide testing prior to release

7.Packaging: 25kg net per unit in fibre drum with double-layer PE bags.

The whole process is carried out in 100,000-level purification workshops, and batch records are maintained for full traceability.

Green Tea Extract Polyphenols Advantages

Natural antioxidant activity.Its ORAC value is much higher than the values of Vitamin C and E and can be used as a substitute for synthetic preservatives such as BHT and BHA in clean-label products.

Active content normalised.Production batch-to-production batch reproducibility essential for efficacy studies and shelf-life extension claims with 98% polyphenols (UV) and established EGCG levels by HPLC.

Decaffeinated and safe as a stimulant.Caffeine content is less than 0.5%. The extract is suitable for product lines targeted at youngsters, elderly customers or caffeine sensitive persons.

Range of pH-stable, metal-chelating formulationsThe extract showed high metal chelating action that inhibited lipid peroxidation. It is stable in the pH range of 3.0–5.0 and can be used in most beverages and cosmetics.

Traceability of sourceOur raw material is directly sourced from our own high mountain green tea planting base, under the supervision of professional agronomists, with full batch traceability from field to final extract.

Green Tea Extract Polyphenols Application

Functional Food & Clean-Label Preservation

The extract inhibits hexanal production and rancidity at 200–500 ppm concentrations in high-fat matrices such as fish oil, edible oils and fried snack products and performs better than BHT and TBHQ at industrial frying temperatures.

Nutraceuticals-Cardiovascular & Weight Management

High-EGCG grades (90%+) are often employed in metabolic and thermogenic tablet and capsule formulas. For increased bioavailability, formulators often combine the extract with piperine or employ phospholipid complexes. Accurate bulk density standards allow for uniform filling of capsules.

Cosmeceuticals – Anti-Ageing & Skin Protection

The extract reduces UV-induced free radical chains and MMP activity in serums and day creams. To avoid the typical browning oxidation reaction in emulsions, keep the pH of the formulation between 4.0 and 5.0, use encapsulating technologies and include chelating agents, such as gluconate, to sequester metal ions.

Drinks

RTD tea beverages and functional drinks can be made from grades with lower polyphenol concentration but cleaner flavour profiles extracted using water.

Why Choose Us?

· 20,000 square metres facility, 10+ production lines, 3,000 tons yearly output, Established producer since 2001

· Own Green Tea Planting Base – Total Control from Raw Material to Finished Extract

• In-house laboratory with HPLC, GC and UV apparatus standardised to SGS

·Third party validated by SGS and Eurofins for independent quality assurance .

· Multi-market certifications: cGMP, FSSC22000, KOSHER, HALAL, ISO9001, ISO22000, BRC, ORGANIC (EU & NOP)

• Flexible supply: 3-7 working day delivery, 3,000 m2 warehouse with consistent stock

· OEM/ODM, ready for custom specs, formats and packaging

Third-Party Test Report

Each batch of polyphenol extract is checked pre-shipment. Internal testing includes active ingredient content, pesticide residues, heavy metals, moisture and microorganisms utilising HPLC, UV and GC instruments.

We also use third party authorised organisations, SGS and Eurofins for independent verification. Test Reports Available Pesticide Residues Testing (Batches available for EU customers in compliance with EC 396/2005) Nutrition Labelling Natural Origin Report Specific Optical Rotation

We undergo testing for Lead and Arsenic for California Prop 65 compliance paperwork with a 98% grade to satisfy the stringent daily intake limitations. Please Contact Us for your target market test reports.

OEM / ODM Support

Based on your target market and formulation requirements, Shaanxi Hongda offers tailor-made product development services. You may request:

· Custom polyphenol parameters (40%–98% total polyphenols; specified EGCG ratios)

·Available in soft gel, hard gel, pills, preblended or quick powder formats

· Custom packaging with your brand

· Private label dietary supplement items for weight management, heart health or skin nourishment.

Pricing and minimum purchase quantities are adjustable depending on format and volume. Contact us to talk about your project needs directly.

FAQ

Q1: Why do UV and HPLC polyphenol test results differ?

A: UV is the total absorbance of phenolic rings in all substances. HPLC can detect and quantify each catechin specifically. If you buy a high purity 98% grade then always ask for the HPLC results to verify the actual EGCG concentration.

Q2: Why does my liquid formulation change colour with time?

A: Under alkaline conditions and in the presence of metal ions , the polyphenols oxidise to form brown theaflavin molecules . Maintain pH < 5.0. Add chelating agents (such as gluconate). Use opaque or UV-blocking packaging.

Q3: How can I determine the EGCG content from a 98% total polyphenol extract?

A: There is no fixed conversion ratio, it is determined by the crop and the batch of extraction. As a general comparison, a 98% total polyphenol (UV) extract generally includes about 45–50% EGCG (HPLC). Always verify by HPLC for clinical or efficacy purposes.

Q4: Is this extract suitable for baking?

A: Yes. The extract has a moderate thermal stability and the antioxidant activity was mostly preserved over the usual times of baking even at temperatures higher than 180 °C. Encapsulation is indicated to limit contact with gluten proteins and to minimise flavour influence.

Q5: How do you comply with EU pesticide regulations?

A: Standard tea extracts may not be compliant with the EU MRLs in EC 396/2005. We deliver individual batches processed by resin adsorption or supercritical CO₂ processes to selectively remove pesticide residues, maintaining the polyphenol profile. When ordering, request documentation in compliance with EC 396/2005.

Q6: What is the correct storage environment to sustain 24 month shelf life?

A: Store in sealed airtight containers, protected from light and moisture, below 25° C. Do not open and reseal. These conditions apply to large barrels as well as to smaller sample packs.

Contact Us

Ready to source high-purity Green Tea Extract Polyphenols? Contact us at duke@hongdaherb.com for samples, COA, pricing, and OEM consultation.