Bean sprouts turned green can still eat. The reason for this is the fact that soybean sprouts turn green because they see light and photosynthesize, so they turn green, which is the normal reaction of plants to light, so they do not produce harmful substances, and can be eaten normally.

The general soybean sprouts in the germination is not need to see the light, so in the soybean into soybean sprouts has been yellow. But if you find the soybean sprouts black is not eaten, if you find that the bean sprouts have green and black phenomenon (known as the "rotten root" phenomenon), it can no longer be used as food, especially if you find that if there is a yellowish-green color and bean sprouts on the phenomenon of sticky, then do not eat again.