In particular, the whole dyed medlar is red, even the small white spots on the medlar stalks are red, while the stalks at the top of normal medlar are mostly yellow or white, the medlar stalks dipped in pigment are red, and the medlar stalks roasted with sulfur are dark brown. Because the pigment-dyed medlar is particularly afraid of water, you can put a few medlars in the water when you buy medlar, or rub them with wet hands on purpose. If the color fades, it means that the pigment has been used.
2. Distinguish from the shape
Both Ningxia Lycium barbarum and Inner Mongolia Lycium barbarum are rectangular, but Ningxia Lycium barbarum will float when soaked in water, and Inner Mongolia Lycium barbarum will sink, while Xinjiang Lycium barbarum is round and easy to distinguish. These kinds of Lycium barbarum are all big and full top grades. Many merchants use this method because soaking in alum will make wolfberry fruit bigger.
However, Lycium barbarum soaked in alum is still very easy to distinguish. If this kind of medlar is irradiated with light, there will be shiny crystal points on the surface of the medicinal material; In addition, "poison medlar" feels sticky, while natural medlar is dry.
Step 3 tell from the smell
For Chinese wolfberry fumigated with sulfur, just grab a handful and cover it with your hand for a while, then put it under your nose and smell it. If you can smell the pungent and choking smell, you can be sure that it has been fumigated by sulfur.
Step 4 tell from the taste
Ningxia Lycium barbarum is sweet, especially sweet to eat, but it has a bitter taste in its throat after eating; However, Lycium barbarum in Inner Mongolia, Xinjiang and other places is a bit greasy, and it will be bitter when chewed with alum. As for the Chinese wolfberry soaked in sulfur, it tastes sour, astringent and bitter.
Extended data:
Harm of improper consumption of Lycium barbarum;
1, Lycium barbarum is suitable for people with weak constitution and poor resistance. But in the process of taking it, you must stick to it for a long time and eat a little every day to be effective. Lycium barbarum contains betaine, amino acids, carotene, vitamin B 1, B2, C, calcium, phosphorus and iron. It is beneficial to human health, but we should pay attention to the dosage. Excessive consumption of Lycium barbarum will make people get angry, nosebleed and even make their eyes red and uncomfortable.
2. Although Lycium barbarum has good nourishing and therapeutic effects, it is not suitable for everyone. Because it has a strong warming effect, people with inflammation and diarrhea had better not eat it.
People's Daily Online-Eating Lycium barbarum by mistake has three major hazards. How to distinguish dyed Lycium barbarum?