The main nutritional component of blueberry is anthocyanin in the epidermis. Anthocyanin itself is a water-soluble pigment, also known as anthocyanidin, which is a water-soluble natural pigment widely existing in plants in nature and belongs to flavonoids. It can change color with the pH value of cell fluid. Cell sap is red when it is acidic and blue when it is alkaline.

Anthocyanin is one of the main pigments that constitute the color of petals and fruits. Anthocyanin is a secondary metabolite of plants and plays an important role in physiology. The colors of petals and fruits can attract animals to pollinate and spread seeds. The color of fruit is formed by the color of chloroplasts or vacuoles in cells. When the cell wall splits, the cell fluid in the cell will flow out, which will cause the water to turn red and the feeling will fade.

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Precautions:

1, dried blueberry is rich in nutrition, containing a variety of amino acids, vitamins and trace elements, and also rich in anthocyanins. However, it should be noted that dried blueberries should not be eaten more, because it contains a lot of oxalate, which is easy to cause gastrointestinal discomfort. Eating dried blueberries is also not suitable for eating high-calcium foods, so as not to affect the body's absorption of calcium.

2. Dried blueberry contains a lot of water and dietary fiber, which is beneficial to defecation. Therefore, patients with diarrhea should not eat more, so as not to aggravate the condition.

3. Although dried blueberries contain various nutrients, diabetics should not eat them because they are rich in sugar. If diabetics eat too much, they may aggravate their physical discomfort.

4. Blueberries are dry, sour and refreshing, rich in vitamin C, vitamin E and anthocyanins, which have antioxidant effect and can remove excess free radicals in the body. Therefore, women who often eat dried blueberries can delay aging, dilute pigmentation and improve skin color.

Baidu Encyclopedia-Wild Blueberries

Baidu encyclopedia-anthocyanin

Baidu encyclopedia-dried blueberries