anthocyanin compounds to natural color. Of anthocyanin color will change as the acid - alkaline. Antioxidant properties help Reduce the risk of cancer And soluble Even darker is higher anthocyanin content. Found in many plants including rice.
Rice seeds have colored with anthocyanin, but we can not tell just by looking at the volume of anthocyanin color in case the color intensity equal.
And in the breeding There will be a screening for Quantitation of anthocyanin. However, due to the amount of grain that makes it consumes materials and costs. Therefore, development of screening method for Quantitation of anthocyanin, easier. From pH differential method (Shafazila, et al., 2010)