Green Tea Extract Powder for Antioxidant and Metabolic Health Formulas

Green Tea Extract Overview

Green tea extract is a standardized botanical ingredient obtained from the leaves of Camellia sinensis, concentrated for its catechins and polyphenols, the primary bioactive constituents of green tea. It is identified by its main marker epigallocatechin gallate (EGCG), CAS number 989-51-5, molecular formula C22H18O11 and molecular weight 458.37 g/mol, and it also delivers natural L-theanine (CAS 3081-61-6, C7H14N2O3, molecular weight 174.20 g/mol) in dedicated grades. EGCG is the most abundant catechin in green tea and the marker by which extract quality is standardized.

For the dietary supplement industry, green tea extract is used in antioxidant, weight management, metabolic, cardiovascular and cognitive formulas, and as a source of tea polyphenols in clean-label products. Purecium supplies six standardized grades, from EGCG 45% with catechins 75% and EGCG 50% with catechins 80%, through polyphenols 98% and polyphenols 50% (EGCG 15%, catechins 30%), to natural L-theanine 20% and 40% grades, all sold exclusively as B2B raw materials for distributors, contract manufacturers, private-label producers and finished supplement brands.

Source & Ingredient Identity

Purecium Green Tea Extract is produced from selected Camellia sinensis leaves harvested at controlled maturity, extracted with food-grade water or ethanol, decaffeinated where the specification requires, and purified and dried to a fine powder. The extraction solvent, catechin profile and residual solvent content are verified on every batch, and identity is confirmed by HPLC fingerprinting against reference catechin standards, which is the definitive check for botanical authenticity.

The product family covers EGCG 45% (catechins 75%), EGCG 50% (catechins 80%), EGCG 50% with polyphenols 98%, polyphenols 50% (EGCG 15%, catechins 30%), polyphenols 50%, and natural L-theanine 20%/40% grades. For B2B buyers, the critical purchasing checks are the EGCG and total catechin assay on the Certificate of Analysis, the polyphenol content, residual solvent and pesticide residues, and the caffeine level where a decaffeinated grade is required.

Key Characteristics of Green Tea Extract

1. Standardized catechin content. The defining characteristic of green tea extract is its standardized EGCG and total catechin content, quantified by HPLC on every batch. This standardization lets formulators dose a known amount of the primary bioactive marker rather than relying on the variable composition of raw tea leaf.

2. Polyphenol-rich antioxidant profile. Green tea polyphenols, of which EGCG is the most abundant, are among the most studied plant antioxidants; the NIH Office of Dietary Supplements maintains a green tea factsheet covering the catechins and their research. Published clinical studies suggest support for antioxidant status, metabolic rate and cognitive function at typical intakes.

3. Multi-grade flexibility. With six standardized grades, from high-EGCG extracts to polyphenol-rich and L-theanine grades, the same botanical platform supports antioxidant, weight management, sports and relaxation products. The powder is free-flowing, non-GMO, allergen-free, gluten-free and vegan, and it blends cleanly into capsules, tablets and stick-packs.

Green Tea Extract Manufacturing

The manufacturing process begins with selection and quality testing of Camellia sinensis leaf, followed by extraction with food-grade water or ethanol under controlled temperature to preserve the catechin profile, clarification, concentration, and spray or vacuum drying to a fine powder. Where the specification requires, the extract is decaffeinated by a food-grade process before concentration, and every stage is process-controlled with in-process checks on solvent, temperature and drying parameters.

Each finished lot is tested by HPLC for EGCG, total catechins and polyphenols, together with identification by HPTLC fingerprint, residual solvent, caffeine content, heavy metals, pesticide residues, and microbial limits, all reported on the batch Certificate of Analysis. Each lot is traceable from tea-leaf lot to finished drum, and analytical methods follow the current USP-NF and European Pharmacopoeia botanical monographs where applicable.

Applications of Green Tea Extract

Antioxidant and metabolic support is the primary application of green tea extract. Mechanistically, catechins such as EGCG act as direct free-radical scavengers and support phase II antioxidant enzymes, and published clinical studies suggest modest support for resting metabolic rate and fat oxidation in weight management programs. Typical supplement servings range from 300 mg to 500 mg of extract per day, standardized by EGCG content.

Cognitive, relaxation and sports nutrition form the second cluster. L-theanine grades are used for relaxation and focus, where theanine is studied for its calming effect in combination with caffeine, and green tea polyphenols appear in sports nutrition for antioxidant recovery support. Regulatory agencies such as the NIH Office of Dietary Supplements and EFSA have reviewed green tea catechins and L-theanine for use in food supplements; finished-product claims should always follow the regulations of the destination market.

Green tea extract is compatible with capsules, tablets, sachets and powder blends, and it is commonly paired with caffeine for weight management, with L-theanine in focus formulas, and with vitamin C or other antioxidants. Formulators should protect the extract from light and moisture and use enteric or coated delivery where gastric degradation of catechins is a concern.

Manufacturing & Quality Control

Purecium Green Tea Extract is produced in facilities operating under ISO 9001 and FSSC 22000 certified quality systems, with Kosher and Halal certification available. Analytical methods follow the current USP-NF and European Pharmacopoeia approaches for botanical extracts, with HPLC quantification of EGCG, total catechins and polyphenols on every released batch.

Each commercial lot is fully traceable from tea-leaf lot to finished drum, and the batch is released only when identity, assay, residual solvent, pesticide residue, heavy metals and microbial results are all within specification. Alongside the CoA, Purecium provides the specification sheet, SDS, allergen and gluten statements, non-GMO declarations and stability data on request.

Green Tea Extract for B2B Supplement Manufacturing

Purecium supplies Green Tea Extract exclusively as a B2B raw material for distributors, contract manufacturers, private-label producers and finished supplement brands. The minimum order quantity is 25 kg; each grade is packed in 25 kg drums with food-grade aluminum-foil inner bags, and samples and full documentation are available before commitment.

For North American customers, inventory is staged at Purecium's US warehouse, enabling pickup or delivery within approximately two days. Global delivery covers Hong Kong, mainland China, the EU and other regions, with export documentation prepared for every shipment. Purecium also provides grade selection guidance, custom mesh sizing and technical and regulatory communication to move green tea extract from ingredient selection to commercial formulation.

Reviewed by the Chief Quality Assurance / Regulatory Affairs Specialist at Purecium for technical accuracy and regulatory alignment.