*3.2.1 Anthocyanins and proanthocyanidins*

Anthocyanins and proanthocyanidins are known as color pigments found in several varieties of rice as bioactive compounds. These colorful pigment bioactive compounds are located in the aleurone layer of rice grain [26]. Pigmented rice is diverse in the color, mainly due to the grain's high anthocyanin content. Several pigmented rice including black, brown, dark brown, dark purple and red-grain rice have been reported have been reported, which its color is depend upon the kinds of pigment colors [17].
