1. Look: authentic black rice is only the surface of the rice skin black, peeled off the skin, the heart of the rice is white, the color of the rice grains are dark and light, while the color of the stained black rice color is basically the same.
2. Smell: authentic black rice soaked in warm water has a natural rice aroma, stained rice without rice, there is an odor.
3. Touch: authentic black rice is brown rice, rice grooves.
4. Rubbing: authentic rice does not lose color, wash only when the color, and dyed rice generally hand rubbing will lose color.
Black rice authenticity methods
1, see: look at the color and appearance of black rice. General black rice has a glossy, uniform grain size, rarely broken rice, popping waist (cracks on the grain), no insects, does not contain impurities. Sub-quality, poor-quality black rice has a dull color, uneven grain size, poor fullness, more broken rice, insects, lumps and so on. For dyed black rice, because the black of black rice is concentrated in the cortex, the endosperm is still white, therefore, consumers can scrape off all the cortex outside the rice grains, observe whether the grains of rice is white, if it is not white, it is very likely that it is thought to be dyed black rice.
2, smell: smell the odor of black rice. Take a small amount of black rice in hand, to black rice ha a mouthful of hot air, and then immediately smell odor. High-quality black rice has a normal fragrance, no other odor. Slightly odor or moldy smell, sour smell, rotten smell and abnormal smell for the second quality, poor quality black rice.
3, taste: taste the flavor of black rice. You can take a small amount of black rice into the mouth and chew, or grind and then taste. High-quality black rice taste good, slightly sweet, without any odor. There is no flavor, slight odor, sourness, bitterness and other bad taste for the second quality, poor quality black rice.