Selection of goji berries can be screened according to the appearance and color of goji berries and the change of color after blistering.
1. Appearance and color: if the purchase of goji berries, found that the whole goji berries are red, even goji berries at the tip of the small white spots have become red, then this goji berries are dyed goji berries, not recommended to buy. To determine whether the wolfberry is dyed can be rubbed with a moist hand, if there is a loss of color, it means that the pigment has been used.
Another point, if the position of the wolfberry tip is dark brown, then it means that this kind of wolfberry is baked with sulfur, it is not recommended to buy.
2. After soaking: identify the quality of goji berries can also be placed in boiling water soak for 3 minutes, if the color of goji berry water is light golden yellow, fresh and translucent, indicating that the quality of this goji berry is good. If the goji berry water at first there is no little color, the late appearance of a slight yellow, indicating that this goji berry is fumigated goji berry quality is not good.