Green Tea series

Green tea extract

CAS number: 84650-60-2

HS customs number:


Tea polyphenols, freely soluble in water, ethanol, ethyl acetate and slightly soluble in oils, are white to brown powdery solids or crystals with astringent taste. They are stable under hot or acidic condition in the range of PH 2~7. They are slightly hygroscopic, the PH of their aqueous solution is 3~4. Tea polyphenols are easy to be oxidized and become brown under alkaline condition. Green-black compounds are formed when they meet iron ions.


Specifications 98/80/50 98/75/45 50/30/15
Total polyphenols ≥98.0% ≥98.0% ≥50.0%
Catechins ≥80.0% ≥75.0% ≥30.0%
EGCG ≥50.0% ≥45.0% ≥15.0%
Caffeine ≤0.5% ≤1.0% ≤10.0%
Loss on drying ≤5.0% ≤5.0% ≤5.0%
Residue on ignition ≤3.0% ≤3.0% ≤3.0%
Heavy metals ≤10.0 mg/kg ≤10.0 mg/kg ≤10.0 mg/kg
Lead ≤5.0 mg/kg ≤5.0 mg/kg ≤5.0 mg/kg
Arsenic ≤2.0 mg/kg ≤2.0 mg/kg ≤2.0 mg/kg



Storage condition

Store in dark, airtight and dry place.


CAS number: 3081-61-6

HS customs number:


L-theanine structure

Quality specification

Specification TP20 TP30 TP40 TP90
Appearance light yellow to light brown or dark brown powder white or almost white powder
Loss on drying ≤6.0%
Heavy metal ≤10mg/kg
Lead ≤2mg/kg
Arsenic ≤2mg/kg
Theanine ≥20.0% ≥30.0% ≥40.0% ≥90.0%
Total aerobic bacteria(cfu/g) ≤1000
Total molds and yeasts(cfu/g) ≤100
Escherichia Coli(1g) negative



Storage condition

prevented from light and stored in airtight and dry condition