Here is the antioxidant definition:
In cells, antioxidants such as curcumin, glutathione, mycothiol, or bacillithiol, and enzyme systems like superoxide dismutase, can prevent damage from oxidative stress.
Curcumin is a bright yellow chemical produced by plants of the Curcuma longa species. It is the principal curcuminoid of turmeric, a member of the ginger family, Zingiberaceae. It is obtained as a herbal supplement, cosmetics ingredient, food flavoring, and food coloring. However, in supplementation, seek out ultra-clean turmeric for maximum benefit.
Because turmeric is highly efficient at absorbing toxic heavy metals from the soil, and it's not easy to find ultra-clean turmeric from a reliable source. However, after searching all across the globe for the cleanest turmeric roots on the market and extensive lab-testing of its raw materials, ultra-clean organic turmeric root powder is available via this website that has passed stringent standards of cleanliness and purity.