Black glutinous rice is rice with purplish-red seed coat, because of the glutinous rice, so it is also known as blood glutinous rice, natural blood glutinous rice after soaking in warm water, due to the red pigment of the seed coat is slowly dissolved by the aqueous solution, it will gradually appear purplish-red aqueous solution, and with the prolongation of time, the red color is getting more and more intense. And after cooking, the red seed coat will be separated from the embryo (rice grain). Counterfeit blood glutinous rice is made from poor quality rice, colored by purplish red pigment. The most obvious difference is that after soaking in water, the water quality becomes red significantly faster than the real blood glutinous rice, more than a few washes will reveal the original shape of the white rice, and there is no red seed coat appears after boiling.
Purple rice is a kind of rice, because of the milling of the rice grain is purple, so the name. Purple rice has a purple skin within the white non-glutinous and surface are purple glutinous two kinds. Purple rice is fragrant, oily and soft. Purple rice nutritional value and medicinal value are relatively high, there are blood, spleen, and treatment of neurasthenia and other roles. Because of all the advantages of purple rice and production is not high, so more precious.
Strictly speaking, purple rice and black rice is two kinds of rice, although the same belongs to the class of glutinous rice, but the nutrient composition and efficacy is different. Just some dealers in the market do not pay attention to the breakdown of sales, the purple rice and black rice is the same, together as black rice for sale.