Lycium barbarum is rich in anthocyanin, which is a water-soluble pigment. It usually exists in vacuoles of plant cells, and when the cells are damaged, this pigment will dissolve into water. Therefore, it is normal for the water soaked in Lycium barbarum to turn purple or light black. The fading speed of purple-black food is related to anthocyanin content and soaking water temperature. The higher the water temperature, the faster the pigment dissolves.
Purple-black food fades when it meets water, which does not necessarily mean that it is dyed, but it is probably its true color. Normal black wolfberry, etc. After soaking in cold water, it will not change color immediately, but will slowly bleed. The color of water is not pure black, but gradually darkens from light purple. The dyed food often turns black quickly, and the aqueous solution is pure black and opaque.
Anthocyanin glycosides have a special property: they turn red under acidic conditions and blue under alkaline conditions. For example, if you add a proper amount of vinegar to the water soaked in black wolfberry, the color will turn dark pink, and if you add a certain amount of alkali or baking powder, the color will turn blue-purple. Dyed food will not change like this.
Generally speaking, the water quality in the north is alkaline; The water quality in the south is acidic; So in the south, the water will be purple. It is suggested that people in southern China can choose strong alkaline water when soaking black wolfberry. Of course, the color performance of Lycium barbarum does not affect the absorption of anthocyanins in Lycium barbarum. It's best to soak in water at about 60 degrees. Excessive temperature will affect the release of active substances. When the temperature is too low, the polysaccharide and other components in Lycium barbarum are not easily released, which will affect the taste, that is, the faint fruity smell we feel when soaking Lycium barbarum.
Extended data
Effect of soaking Lycium barbarum in water;
1, tonifying kidney. Black Lycium barbarum has the function of tonifying kidney. Black wolfberry is sweet. Drinking black wolfberry soaked in water often can relieve the symptoms of kidney deficiency.
2. tonify qi and blood. Lycium barbarum not only has a good kidney-tonifying effect, but also can promote blood circulation, resist aging and enhance human qi and blood.
3. Hair growth. Nowadays, many people have serious hair loss, and everyone's hair growth is closely related to the kidneys and other parts. Therefore, Lycium barbarum has the function of preventing alopecia, so it can improve the blood circulation of human body, promote the growth of hair and improve the condition of alopecia. Let the hair grow thick and luxuriant, and make the hair healthier.
4. Enhance immunity. Drinking black wolfberry soaked in water often can also enhance human immunity, which is good for some people with weak body and poor cold resistance to drink black wolfberry soaked in water. Drinking soaked Lycium barbarum can also improve human immunity, because Lycium barbarum is rich in nutrition and has high nutritional value.
5. Prevent cancer. Soaking Lycium barbarum in water can also inhibit the growth of tumor and the variation of human cells. Reducing the probability of human diseases to a certain extent can make people healthier.
6. Vision. Black Lycium barbarum can also improve eyesight. For some elderly people with presbyopia and cataracts, drinking soaked Lycium barbarum can have a certain health care effect on their eyes. You can also steam eggs with black wolfberry, which will be more nutritious. Some patients with night blindness should eat some black wolfberry.
7, prevention and treatment of three highs. Hyperglycemia, hypertension and hyperlipidemia can play a certain role in regulating and preventing the three high-risk diseases that endanger human health. Lycium barbarum can also relieve arteriosclerosis and other diseases of human body.
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