According to Cabrera, green tea contains gallic acid, a powerful antioxidant in its own right. It also contains carotenoids, tocopherols, ascorbic acid (vitamin C) and minerals such as chromium, manganese, selenium, zinc and certain phytochemical compounds.
1. forceful, strong. Powerful, mighty, potent suggest great force or strength. Powerful suggests capability of exerting great force or overcoming strong resistance: a powerful machine like a bulldozer. Mighty, now chiefly rhetorical, implies uncommon or overwhelming strength of power: a mighty army.
Putin is declared the most powerful man in the world by Forbes magazine... 1  Vladimir Putin is declared world's most powerful for third year in a row. 2  German Chancellor Angela Merkel steals runner-up from Barack Obama.  First year a sitting U.S. President has not made it into the top two.