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My topic is about the antioxidant effect of brazil berry-Acai. The qPCR results show that Acai has reduced the mitochondrial DNA damage of human skin cell as a marker of oxidative damage. Could you help me discuss: 1. Can the antioxidant effect of anthocyanin in Acai be measure by colour of cell (the degree of white or red)；life expectancy of cell; Half-life of cell? 2. Why anthocyanin supplementation are good for some people but no effect for some people 3. Can the antioxidant effect of anthocyanin in Acai be seen directly from the colour of human skin? ( the astaxanthin in sea an