Anthocyanidin
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Last Update: 2021-01-09
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Source: Internet
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Author: User
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an important water-soluble plant pigment, belonging to flavonoids. Its basic structure is composed of a muthan ketone and 2 benzene rings, in the B ring 3', 4', 5' replacement base is different, and make it a variety. The most common are three species (all named after the plants that first got it): the substitute for hydroxyl chrysanthemum pigment, also known as cyanidin, at 3', 4', the substitute for hydroxyl called pegonidin, and 3', 4', and 5' for hydroxyl replacement called delphinidin. Hydroxylation on the third carbon atom is most susceptible to glycosylation to form anthocyanins. In plants, it is always present in the bubbles of petals, fruits, and leaves in the form of anthromosine, making them appear in a variety of colors. Outside the body, the color changes with pH, red in the acidic environment and blue in the alkaline environment. PH does not change much in plants, so pH is not the main control factor for colors such as petals, the more important control factors are: pigment content; The latter is blue, although in neutral conditions.。
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