Pericarpium Citri Tangerinae is a dried medicinal material from mature orange peel, which has a long history of application in China and is also a commonly used medicinal material in traditional Chinese medicine. It is recorded in Shennong Herbal Classic.
Classification of dried tangerine peel
1, orange peel (green peel)
Usually refers to the skin processed from the fruits harvested from beginning of autumn to Hanlu Festival in the lunar calendar. At this time, the peel is not colored and the physiology is immature. Appearance color is bluish brown to bluish black, with numerous concave oil cavities and no shrinkage; The inner surface is tight and smooth, white, yellowish white to brownish red. Hard texture, thin skin, high proportion of volatile oil, bitter taste and fragrant gas.
2. Redness of skin (yellow skin/red skin)
Usually refers to the processed skin of fruits harvested from cold dew to light snow in the lunar calendar. The pericarp began to color, but it was not completely colored, and the physiology was not fully mature. The appearance color is brownish yellow to brownish yellow, with numerous large and concave oil chambers and obvious shrinkage. Hard, slightly thick, bitter and slightly sweet; The inner surface is white, yellowish white to brownish red, and the sponge is not obvious.
3. Red skin (red skin)
Usually refers to the processed skin of fruits harvested in the lunar calendar. The pericarp is basically colored and the physiology is basically mature. The appearance is brownish red to red, black red, with numerous large and concave oil chambers, and the contraction is very obvious; The inner surface is white, yellow-white to brownish red, and the sponge is obviously fluffy. Soft, thick, spicy and sweet.