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vine tea extract latin name: ampelopsis grossedentata w.t.wang. chinese name: teng cha chemical name: (2r,3r)-3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)chroman-4-one origin: vine tea is one of a rare plant. botanical name is ampelopsis grossedentata, it is one kind of typical tea plant, "chinese herbal medicine collection" wrote that the vine tea (teng cha )has a glycol flavor, the nature is cool; it can alleviate fevers, dis-intoxicate, cure rheumatism, strengthen physique, diuresize, and many other functions. the vine tea (teng cha) contains rich flvones, amino acids, vitamins; proteins and essential trace element, in which the content of total flavones, and dihydromyricetin elementis are especially high. product type: white powdered extract part of the plant used: leaves extract method: ethanol / water effective components:dihydromyricetin appearance: fine whitish powder odour & taste: characteristic,special sour. molecular formula: c15h12o8 molecular weight: 320.25 cas no.:27200-12-0(dihydromyricetin) boiling point: 780.7°c at 760 mmhg flash point: 296.7°c solubility: good solubility in hot water ,ethanol and acetone. vapor pressure: 1.16e-25 mmhg at 25°c. specification: dihydromyricetin dmy 50%, 90%, 98% (hplc) introduction: vine tea, also be called as dragon-boat tea, dragon-whisker tea, young stem and leaf from ampelopsis grossedentat , a plant of (ampelopsis grossedentata)(hand-mazz)w.t.wang, growing in 1300-1950m hillside shrub or valley woodland , always be consider as legendary healthy tea. researches show than vine tea can relieve inflammatory, mixture cough and antitussives, it also has strong inhibitory effect to common bacteria can be found in food. some of flavonoids, for example ampelopsin and dihydromyricetin, are main active ingredients in vine tea, which have almost same mic and mbc comparing with berberine, and have high free radical scavenging activity varies between 73.3~91.5%. it can also reduce oxidative damage in the body, anti-aging, reduce the deformation and tissue necrosis of animal liver. dihydromyricetin also have ability on lifting alcohol poisoning, prevent for afl, inhibit the deterioration of liver cells, decrease the incidence of liver cancer. in these case dihydromyricetin is consider as a good product for enhance activity of sod, protecting liver and removing inebriation. dihydromyricetin now entered clinical trials as a class of new drugs when researcher of dihydromyricetin achieved a major breakthrough in field of anti-leukemia and medicine of nasopharyngeal cancer. ampelopsis injection is expected to be a new treatment for leukemia and nasopharyngeal cancer. feature: kingherbs ltd using high quality materials and specialized production technology, ensure the quality of the products,in recent years by the domestic and international praise. no solvent and pesticide residue . 100% purely natural. pharmacology action: 1.it exhibited several potent pharmacological activities, including hypoglycemic,