Colored rice is a hulled grain having red or purple color . It is reported that
black rice contains a lot of anthocyanin
pigments [14]. Anthocyanins are belong to water-soluble
plant pigments and representatives of flavonoids. They are
responsible for the blue, purple and red color of many plant
tissues. Depending on the pH, anthocyanins are red to
purple or blueThey have a positive charge on the molecule which enables it to absorb light and thus have color.