Peony Root Processing Dan
After peony root is processed, it is a traditional Chinese medicine called Danpi. Dan Pi slightly cold, spicy, bitter, non-toxic, into the heart, liver, kidney three classics, have analgesic, antipyretic, pass through, blood circulation, can clear the blood, scattered congestion, but also antibacterial, blood pressure effect. Treatment of essential hypertension with Dan Pijia Decoction is effective and has no side effects. Its processing method is as follows:
After the peony root is harvested, it is rinsed with water, and then scraped off the outer skin with a piece of glass and placed in the sun for a day or two to make the water evaporate and become soft. Then, the wood roots are peeled off. "cramp". Then put it on the shelf of the hospital seat to spread the sun for two or three days. The time for the sunny sun drying is short, and the drying is quick, the color is white and shiny, and the quality is good; the cloudy day is slow, the color is dark, and the quality is poor. Therefore, it is not advisable to shave the skin and cramp on cloudy days. It should be sunny after 8 am on sunny days.
After drying, the peony skin is called "dan pai" or "panda skin" and has a cylindrical or semi-cylindrical shape. The skin is white or reddish brown, and the inner brown is fine and smooth. The texture is hard and brittle and easily broken. The cross section is pink and white, with a specific fragrance. Peony root phloem and cortical thin-film cells and their spaces contain more starch and calcium oxalate crystals. There is also a wolfberry which is decomposed by enzymes contained in peony itself to produce peony alcohol and glucose. Peony alcohol is a glossy needle-like crystal with a melting point of 50°C. Slightly soluble in cold water, slightly soluble in hot water, soluble in common organic solvents, its alcohol solution plus ferric chloride was dark purple. In addition, root bark also contains components such as benzoic acid and phytosterols.
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