Wild and brown rice varieties are far better than white rice in this category since the husk of the grain is where much of the nutrients are; ironically, the husk is removed in white rice preparation.
I'm also going to assume you want to end up with something that is food safe. If you want to extract curcumin from turmeric, you can soak ground turmeric in 99% ethanol for a day or two.Filter the solids away with a coffee filter. You should end up with a nice amber colored ethanol solution.'m also going to assume you want to end up with something that is food safe. If you want to extract curcumin from turmeric, you can soak ground turmeric in 99% ethanol for a day or two.
Recent studies have studied the use of curcumin, the active ingredient in turmeric, as a treatment for pancreatic and colorectal cancer. As a spice, and as a food coloring. IT also aids digestion and is a  mild preservative. 21 people found this useful.