Don't store Lycium barbarum for too long. It is generally recommended that twelve months is the best. After eating, seal the rest and put it in the refrigerator to prevent deterioration.
Lycium barbarum turns black or white, feels sticky, and even bugs appear inside. That kind of medlar is also expired, and the mildew reaction is very great. It is not recommended to take it.
Extended data
Generally, the color of Lycium barbarum is positive, the meat is round and shiny, and the expired Lycium barbarum is white or black, or it is expired according to the different colors of the two.
Fresh Lycium barbarum doesn't smell irritating, and expired Lycium barbarum will give off a choking smell, which may be peculiar smell or other choking smells.
Touching Lycium barbarum, it is easy to tell whether Lycium barbarum is mature or not. The aged Lycium barbarum has a sticky feeling and may have mucus.
Baidu encyclopedia-Lycium barbarum