Dr. Eguchi and co-investigators at Japan’s Wakayama Medical University recently discovered that brown rice contains a substance capable of combating angiotensin II, an octapeptide found in blood that causes vasoconstriction, which results in increased blood pressure.Temple Study Points to Cardiovascular Benefits of Brown Rice
“Our research suggests that there is an ingredient in rice (the ethyl acetate extract from the subaleurone layer) that may be a good starting point for looking into preventive medicine for cardiovascular diseases,” said Dr. Eguchi. “We hope to present this as an additional health benefit of consuming half-milled or brown rice [as opposed to white rice] as part of a regular diet.”
The substance in rice that appears to combat vessel constriction is the layer that is stripped away in the production of white rice, known as the subaleurone layer. Rich in oligosaccharides and dietary fibers, this layer can be preserved in incompletely-milled (Kinmemai) and half-milled (Haigami) rice, both popular in Japan.