What's the use of walnut green peel?

The green skin of walnut is called Qinglongyi. Compendium of Materia Medica records that green walnut skin has analgesic effect. In the traditional Chinese medicine prescription, the green peel of Carya cathayensis is called Qinglongyi, which can be used to treat skin itching and pain.

Walnut green peel soaked in wine can be used to treat liver and stomach gas pain, gastric neuralgia, acute and chronic stomachache. In 1950s, people at home and abroad used Changbai Mountain wild green walnut skin to soak in wine to treat stomachache, dysmenorrhea and cancer pain. , instead of morphine, tincture of opium and other painkillers, has received good analgesic effect.

Extended data:

A green hand will turn black when it touches walnuts;

Walnut Green Peel contains walnut, α-hydrogenated walnut -4- glucose, tannin, gallic acid, walnut drunk alkaloid (C 1OH6O3) and Naiyan. Among them, tannins (tannins) and gallic acid are oxidized to dye the hands brown.

The reason why fresh walnut skin will be black handed is because it contains "walnut green pigment".

At present, only diluted strong acid can quickly remove the black after oxidation and discoloration. For example, dilute sulfuric acid, such as black oxide contaminated with walnut green pigment on the skin, can only be removed slowly by washing hands frequently and relying on the metabolism, aging and shedding of epidermal cells of human skin.

Walnut green pigment is a traditional Chinese medicine ingredient for treating dermatitis. It is extracted from walnut green pigment and contains tannic acid, gallic acid and other substances. It turns black after oxidation and is most suitable as a colorant in hair dyes.

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