Lycium barbarum contains more carotene, so the normal color of soaking water should be yellow instead of red. If the soaking water is very red, it is usually dyed medlar, and it is not recommended to drink it.

In addition, the color of Lycium barbarum will be disturbed after drying, so it is impossible to dry it. The color is still bright red. If the dried medlar is bright red and beautiful, it is usually dyed. You can see if the navel of the fruit turns red. Normal fruit navel is white, and red Huang Dou is not good.

2 Will the normal medlar fade in cold water?

Carotene in Lycium barbarum is a kind of plant pigment, which is safe to eat and has high nutritional value. Can enhance immunity, beauty and skin care. But carotene will dissolve in water when it meets water, regardless of the temperature. Normal medlar soaked in cold water will also precipitate pigment. If it is soaked in cold water, it is normal to precipitate orange pigment.

However, if the color is particularly red or dark, or it has an odor and tastes bitter, it is necessary to be alert to the deterioration of medlar. In this case, you shouldn't eat it to avoid accidental poisoning.

3 How to distinguish the color of medlar after soaking in water? The color of authentic high-quality medlar is light yellow or orange.

After soaking in water, Lycium barbarum contains natural nutrients such as carotene and riboflavin, which will be soluble in water, showing orange yellow and light yellow, which is a normal phenomenon. Soaking in cold water is darker than boiling water. Because the natural pigment will be damaged by certain stimulation when it meets hot water, the color of soaking water is lighter.

If the water is turbid and dark red, there is a problem. If it is orange and light yellow, it is normal.

In addition, dried Lycium barbarum will produce Lycium barbarum pulp powder due to friction during handling, packaging and transportation. Its ingredients are natural pigments and fructose contained in Lycium barbarum, which will turn yellow to the touch, and fructose will melt and stick to the hands when it comes into contact with hand temperature, not caused by coloring.

4 How to detect whether Lycium barbarum has been fumigated with sulfur? Because Lycium barbarum is sensitive to sunlight and humidity, it is difficult to preserve. Some unscrupulous traders will fumigate with sulfur in order to facilitate storage. Smoked Lycium barbarum is not only convenient for storage, but also more colorful. However, long-term consumption of such medlar will damage liver and kidney, and may even cause cancer. The specific identification method is as follows:

1, Lycium barbarum with normal fruit stalks is mostly white, but Lycium barbarum dyed by sulfur fumigation has no such white spots.

2. Lycium barbarum with normal color is mostly reddish or dark red, with dry skin and fleshy feet; After fumigation, Lycium barbarum is mostly bright red, with moist fruit and uniform surface color.

3. Lycium barbarum fumigated with sulfur tastes bright red. Grab a handful of Lycium barbarum and put it in your hand. There will be a pungent smell in a while, which may be the smell of sulfur fumigation; Normal Chinese wolfberry has only its own taste.

4. After soaking in normal hot water, Lycium barbarum is light yellow and sweet in acid; After soaking in fumigated hot water, it is brick red, bitter and even spicy.