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一种可保护细胞免受活性氧损伤的新制剂是用茶叶、高良姜根,黄芩根的粗提液或精制后的提取液制备的。该制剂至少含有以下一种生化活性成分即:表棓儿茶素(EGCG),高良姜素或黄芩素。保护剂最好是:(i)含EGCG和高良姜素,二者的摩尔比为1:3～3:1,或(ii)以茶叶粗提液与高良姜粗提取液的混合而得,或(iii)将含有EGCG的精制茶叶提取液,及含高良姜素的高良姜提取液混溶到黄芩的粗提液中。这些保护剂可保护细胞免受活性氧如单
A new formulation that protects cells from reactive oxygen species is prepared from crude extracts of tea leaves, Galangal roots, Scutellaria baicalensis roots, or refined extracts. The preparation contains at least one of the following biochemically active ingredients: epigallocatechin (EGCG), galangin, or baicalein. The protective agent is preferably (i) containing EGCG and galangin, in a molar ratio of 1:3 to 3:1, or (ii) obtained by mixing a crude tea extract with a crude galangal extract, Or (iii) the purified tea extract containing EGCG and the galangin extract containing galangin are mixed into the crude extract of Astragalus membranaceus. These protective agents protect cells from reactive oxygen species