Extraction of Defatted Rice Bran with Subcritical Aqueous Acetone.

The article discusses the findings of an experiment which extracted defatted rice bran using aqueous acetone. Forty percent acetone treatment at 230 degree Centigrade produced an extract with the highest level of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity. The study cited the use of ultraviolet (UV) absorption spectra and high-performance liquid chromatography to analyze the composition of the extracts.