Question: what is the difference between turmeric extract and turmeric powder?
Answer: Most clinical studies, however, have not used turmeric powder, but turmeric extract. Only about 3% of the weight of turmeric powder is curcumin and "curcuminoid" compounds -- which are believed to be important to turmeric's effects. In turmeric extracts, the concentration of these is often increased to as high as 95%.