The green color of chrysanthemum tea is due to unstable natural pigment changes.
This is a normal phenomenon and does not mean deterioration. Most of the chrysanthemum tea brewed in daily life is light yellow. Studies have found that the reason why chrysanthemum tea is light yellow when brewed is mainly because of the flavonoids and other substances in it. .
In chrysanthemum tea, flavonoids are generally yellow, so when making chrysanthemum tea, the flavonoids dissolve in the water, and the chrysanthemum tea looks yellow.
However, flavonoids are very unstable and are easily oxidized by oxygen in the air, losing their original yellow color and turning into green. Therefore, chrysanthemum tea will generally change color if left for a period of time. Extended information
In addition to the influence of oxygen, the acidity and alkalinity of the tea water and the metal ions in the water will also affect the color of chrysanthemum tea. Research from Wuhan University found that if the water for making tea is too alkaline, the chrysanthemum tea will be yellowish; if the water is too acidic, the tea will be reddish-orange;
If the water contains more iron ions and aluminum ions , will also cause the color of chrysanthemum tea to be different. Therefore, chrysanthemum tea brewed with tap water will be yellowish-orange, while tea brewed with distilled water will be lighter in color.
Chrysanthemum tea is a perennial herbaceous plant of the Asteraceae family. It is one of the commonly used traditional Chinese medicinal materials in China. Its flower heads are mainly used for medicinal purposes. According to ancient records, chrysanthemum has a sweet and bitter taste and is slightly cold in nature; it has the functions of dispersing wind and clearing away heat, clearing the liver and improving eyesight, detoxifying and reducing inflammation. It has a certain effect on diseases such as dry mouth, excessive fire, astringent eyes, or limb pain and numbness caused by wind, cold, and dampness.
Chrysanthemums are prone to mold and insects, and the quality of chrysanthemums on the market varies. When choosing chrysanthemums, it is best to choose chrysanthemums with green calyx, which indicates that they were picked when they first bloomed; when purchasing, use your hands first Touch it and you will find that soft and smooth chrysanthemums are of better quality. Generally speaking, the chrysanthemums sold in large hospitals or pharmacies are individually packaged, relatively fresh, and of guaranteed quality.
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People's Daily Online--The green color of chrysanthemum tea is due to unstable natural pigment changes