High purity 98% Tea Polyphenol Green Tea Extract CAS 84650-60-2

Introduction:

Tea Polyphenol CAS 84650-60-2 covers a family of extracts from Camellia sinensis leaves. The powder varies from light tan to brownish‑yellow, with a characteristic astringent taste. Good water solubility at moderate concentrations. The composition always includes multiple catechins (EGCG, ECG, EGC, EC), flavonols, phenolic acids, and naturally occurring caffeine (unless decaffeinated). Multiple specifications available: total polyphenols 50%, 70%, 98%; or EGCG content 40%, 50%, 94%. In food applications, these extracts serve as natural antioxidant additives for edible oils, baked goods, and meat products, as well as functional ingredients in beverages and snacks.

Specification:

Application:

1. Dietary supplement capsules and tablets

– Standardized botanical extracts provide reproducible inputs for daily supplement products.

– EGCG 40% or 50% grades are filled into capsules or compressed into tablets. Often combined with caffeine or other thermogenic ingredients. Daily extract amount typically 250–500 mg.

*For long‑term oral use, keep total EGCG intake below 300 mg per day from the extract. Higher intakes (≥800 mg EGCG/day) have been linked to rare liver stress signals.

2. Functional beverages (RTD teas, energy drinks)

– Consumers seek added antioxidant value in drinks without strong off‑taste.

– Lower specifications (polyphenols 50% or EGCG 40%) used at 0.1–0.5% in ready‑to‑drink teas, flavored waters, or energy shots. 

Minimal bitterness and no sedimentation after proper filtration.

3. Food preservation (oils, baked goods, meat)

– Lipid oxidation limits shelf life in fat‑containing foods.

– Polyphenols 50% or 70% grade added directly to frying oils, incorporated into dough, or sprayed onto meat surfaces. 

Slows rancidity development. Replaces or reduces synthetic antioxidants.

4. Topical skin care (creams, serums, sunscreens)

– Environmental stress affects skin condition. Mixtures of catechins offer broader antioxidant coverage than single molecules.

– Polyphenols 70–98% grade dissolved in the water phase of creams or serums at 0.5–2%. Also used in after‑sun lotions and anti‑aging products.

Caution: Many commercial products contain green tea extract at low levels that may not achieve the concentrations used in published studies. Formulators should verify active catechin content rather than rely on extract percentage alone.

5. Oral care (mouthwashes, toothpaste)

– Interaction with oral bacteria and gum tissue is of interest in non‑drug oral hygiene products.

– Polyphenols 50% or EGCG 40% grade added to alcohol‑free mouthwashes or toothpaste at low levels. 

Provides a plant‑derived functional claim.

6. Weight management support formulas

– EGCG has been studied for its influence on energy expenditure.

– Thermogenic capsules or pre‑workout powders include EGCG 40–50% grade alongside caffeine, green coffee extract, or capsicum. Marketed as food supplements for active lifestyles – not as treatments.

Specification selection guide by application

Q&A

Q1: What does "standardized to EGCG 40%" mean exactly?
The extract contains at least 40% EGCG measured by UV.  The remaining 60% consists of other catechins, phenolic acids, and a small amount of caffeine (unless decaffeinated). Total polyphenols are typically higher, around 50–70%.

Q2: How does decaffeination affect the catechin profile?
Water‑based decaffeination removes >95% of caffeine while retaining >90% of catechins. A slight loss of total polyphenols (5‑10%) may occur. 

Q3: Which specification is best for a ready‑to‑drink tea product?
Polyphenols 50% or EGCG 40%. Higher concentrations (≥70%) cause sedimentation and excessive astringency, requiring stabilizers or heavy flavor masking.

Q4: Can this extract be used in clear solutions without cloudiness?
Yes, at low concentrations (≤0.2%) with proper pH adjustment (pH 3–5) and fine filtration. For higher loads, consider using a water‑soluble encapsulated form.

Q5: What is a typical daily intake range for supplements?
Depends on specification. A common approach: keep EGCG intake between 100–300 mg per day from the extract. For EGCG 40%, this means 250–750 mg of extract. Finished product manufacturers should follow local regulatory guidelines.

Q6: Are there any safety concerns for oral supplements?
Yes. High daily EGCG intake (≥800 mg) has been associated with rare cases of liver enzyme elevation. Individuals with pre‑existing liver conditions or those taking medications metabolized by the liver should consult a healthcare professional before use. For long‑term supplementation, keeping EGCG intake below 300 mg per day is a common conservative approach.

Q7: What is the maximum safe concentration in cosmetic products?
According to CIR assessment, green tea extract (CAS 84650-60-2) is safe at up to 0.86% in leave‑on products (e.g., creams, serums) and up to 1% in rinse‑off products (e.g., cleansers, shampoos). Higher concentrations may be used after appropriate safety testing.

Q8: Are there any incompatibilities with other food ingredients?
Strong oxidizing agents and high‑pH conditions (pH >8) degrade catechins. Avoid combining with metal ions like iron or copper in aqueous systems; use chelators (EDTA, citric acid) when necessary.