Black tea extract is extracted from black tea leaves. Its active ingredient is theaflavins, a golden yellow powder that is easily soluble in water or ethanol and is used in health foods, beverages, medicines and cosmetics.
Black tea is called "black tea" when it is created. Black tea. During the processing of black tea, a chemical reaction centered on enzymatic oxidation of tea polyphenols took place. The chemical composition of fresh tea leaves changed greatly, and more than 90% of tea polyphenols were reduced, and new components such as theaflavins and theafronins were produced. Disease prevention: black tea has strong antibacterial power. Gargling with black tea can prevent colds caused by viral filtering, prevent tooth decay and food poisoning, and reduce blood sugar and high blood pressure. Compared with fresh leaves, aroma substances increased significantly. Therefore, black tea has the characteristics of black tea, red soup, red leaves and sweet taste.
Item | Specification | Results | Methods |
Marker Compound | 10:1 | Conform | TLC |
Appearance & Color | brown color | Conform | GB5492-85 |
Odor & Taste | Characteristic | Conform | GB5492-85 |
Plant Part Used | Leaf | Conform | |
Mesh Size | 80 | 100% | GB5507-85 |
Loss on Drying | ≤5.0% | 2.32% | GB5009.3 |
Ash Content | ≤5.0% | 4.26% | GB5009.4 |
Solvent Residue | Negative | Conform | GC |
Heavy Metals | |||
Total Heavy Metals | ≤10ppm | <3.0ppm | AAS |
Arsenic (As) | ≤1.0ppm | <0.1ppm | AAS(GB/T5009.11) |
Lead (Pb) | ≤1.5ppm | <0.5ppm | AAS(GB5009.12) |
Cadmium | <1.0ppm | Not Detected | AAS(GB/T5009.15) |
Mercury | ≤0.1ppm | Not Detected | AAS(GB/T5009.17) |
Microbiology | |||
Total Plate Count | ≤5000cfu/g | Conform | GB4789.2 |
Total Yeast & Mold | ≤300cfu/g | Conform | GB4789.15 |
E. Coli | ≤40MPN/100g | Not Detected | GB/T4789.3-2003 |
Salmonella | Negative in 25g | Not Detected | GB4789.4 |
Staphylococcus | Negative in 10g | Not Detected | GB4789.1 |
Packing and Storage | 25kg/drum Inside: Double-deck plastic bag, outside: Neutral cardboard barrel & Leave in the shady and cool dry place | ||
Shelf Life | 3 Year When Stored properly | ||
Expiration Date | 3 Years |