Nanogold's Influence on Antioxidant Activity of Green Tea Extracts in the Framework of New Essential Ingredients Discovery in Cosmetic Formulation

Abstract

The circulation of cosmetic containing hazardous materials especially mercury has occurred in Indonesia and other countries. The impact has also been felt by the wider community. So far efforts have been made, among others, by searching for and finding new essential ingredients in cosmetic formulas. Mercury in cosmetics leads to the formation of free radicals in the body that must be resisted with antioxidants. Nanogold has been shown to have antioxidant activity. Similarly, green tea extracts are also reported to possess antioxidant activity. Their combined form in cosmetic formulas are expected to increase antioxidant activity. Thus, this study will examine antioxidant activity of nanogold combined with green tea extract. This is particularly important with regard to the application of both in cosmetic formulas. The results obtained show that antioxidant activity of green tea extract of 20 ppm are 91,16%. Antioxidant activity of green tea extract with nanogold in 5, 10, 15, 20, 25, 30 and 35 ppm are 90,63; 90,77; 90,90; 91,42; 91,56; 91,42, and 91,42 respectively. To sum up, the combination of nanogold and green tea extract gives no significant impact towards antioxidant activity.