Julia Chen

茶黃素(teaflavin)

Teaflavin® & Immune Support
    

Anti-bacterial effect: Theaflavins was studied against dysentery causing Shigella spp. using the Vero cell line. Cytotoxicity studies of the extracts were performed using the cell line and the non-cytotoxic concentration of the extract was tested for antibacterial activity against the cytopathic dose of the pathogen. These extracts were found to be non-cytotoxic and effective antibacterial agents. At the concentration of 1.875mg/ml, TFs showed an antibacterial effect. Furthermore, no toxic effect was observed at the same concentration. Moreover, TFs can also inhibit some germs notably, such as Bacillus botalinus, Bacterium enterocoliticum, Staphylococcus aureus, Klebsiella capsulata and Bacillus cereus (J Ethnopharmacol 1995 Dec 1;49(2):115-8).

Anti-viral effect: TFs can inhibit HIV-1 reverse-transcriptase. The 50% inhibition concentration is 0.5ul/ml. The inhibition constant Ki is 0.49 umol/l. The anti-viral activity will be enhanced when theaflavin is combined with gallic acid. TFs can also inhibit human DNA Polymerase α, β, γ and E. coli. RNA Polymerase. Relevant reports show that the ability of theaflavins inhibiting HIV-1 transcriptase is by 20-40 times stronger than that of presently used anti-AIDS drug AZT without any toxic effects (CA,1994,120(9):100285).

http://www.nashai.com/tech/tf_immune.php

http://www.nashai.com/tech/tf_cancer.php

Teaflavin® & Cancer (茶色素中的茶黃素 及 癌症)

Inhibition tumor promotion-related enzymes



茶色素幾乎或不溶於沖茶中, 要煲才能取茶葉中的茶色素, 做法:  5克紅茶, 180 ml 沸水煲 5 分鐘後飲用.  (煲茶不要用鐵器皿; 服中藥前後一兩小時內不要服茶, 以免影響藥效)

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一定要用紅茶, 綠茶未氧化多酚為茶色素...