Green Tea Extract
Synonym:Green Tea P.E.
Molecular Formular:N/A
Molecular Weight:N/A
CAS:84650-60-2
Specification
|
ITEM |
STANDARD |
|
PHYSICAL TESTS |
|
DESCRIPTION |
|
APPEARANCE |
LIGHT YELLOW OR ORANGE YELLOW POWDER |
|
Bulk density |
0.25~0.35G/ML |
|
TASTE |
ASTRINGENT |
|
PARTICLE SIZE |
THROUGH 60 MESH |
|
CHEMICAL TESTS |
|
ASSAY |
TOTAL TEA PPLYPHENOLS >98%
TOTAL CATECHINS >90%
EGCG>60%-70%/ EGCG
CAFFEINE <0.5% |
|
TOTAL TEA PPLYPHENOLS >95%
TOTAL CATECHINS >70-80%
EGCG>45%-50%/ EGCG
CAFFEINE <0.5-9% |
|
TOTAL TEA PPLYPHENOLS >80%
TOTAL CATECHINS > 55%
EGCG> 35%/ EGCG
CAFFEINE < 1%-10% |
|
TOTAL TEA PPLYPHENOLS >70%
TOTAL CATECHINS > 50%
EGCG> 25%/ EGCG
CAFFEINE < 1%-10% |
|
TOTAL TEA PPLYPHENOLS >70%
TOTAL CATECHINS > 50%
EGCG> 25%/ EGCG
CAFFEINE < 1%-10% |
|
TEST METHOD USE |
UV， HPLC |
|
EXTRACT SOLVENTS |
ETHANOL & WATER |
|
LOSS ON DRYING |
≤5.0% |
|
HEAVY METAL |
≤10.0PPM |
|
ARSENIC |
≤2.0PPM |
|
LEAD |
≤2.0PPM |
|
PESTICIDES |
USP26 |
|
MICROBIOLOGICAL RESULTS |
|
TOTAL AEROBIC PLATE COUNT |
<1000CFU/G |
|
YEAST & MOLD |
<100 CFU/G |
Introduction:
Green tea is the second largest beverage demanded by consumers worldwide. Used in China and India for its medicinal effects. There are several compounds extracted from green tea including catechins which contain an enormous amount of hydroxyphenols that are easily oxidized, congregated and contracted, which explains its good anti-oxidation effect. Its anti-oxidation effect is 25-100 times as strong as those of vitamin C and E. It is widely used in medicines, agriculture, and chemical and food industries. This extract prevents cardio-vascular disease, lowers the risk of cancer, and decreases blood sugar and blood pressure, as well as viruses. In the food industry, the anti-oxidation agent used for preserving food and cooking oils.
Functions:
1. The cardinal antioxidative ingredient in the green tea extract is green tea catechins (GTC), which comprise four major epicatechin derivatives; namely, epicatechin (EC), epigallocatechin (EGC), epicatechin gallate (ECG), and epigallocatechin gallate (EGCG)；
2. Other components include three kinds of flavonoids, known as kaempferol, quercetin, and myricetin;
3. Caffeine may be excluded in green tea extracts in order to avoid side-effects; caffeine-free green tea extract supplements are available nowadays. |
