Where is the origin of rosin?

Rosin is a well-known traditional Chinese medicine, which is the oleoresin exudated from several plants of Pinus in Pinaceae, and the remaining solid resin after distillation or extraction to remove volatile oil. So do you know the origin of rosin? Let's have a look!

First, the origin of rosin

Rosin is produced all over the country. There are mainly Pinus massoniana, Pinus tabulaeformis, Pinus tabulaeformis and Pinus koraiensis, which are very famous Chinese herbal medicines. It can be taken externally or internally, but you need to follow the doctor's advice.

1. Masson pine: distributed in Shaanxi, Jiangsu, Anhui, Zhejiang, Jiangxi, Fujian, Taiwan, Henan, Hubei, Hunan, Guangdong, Guangxi, Sichuan, Guizhou, Yunnan and other places.

2. Pinus tabulaeformis: distributed in Northeast, North China, Northwest and Henan, Shandong, Jiangsu and other places.

3. Pinus koraiensis: distributed in Heilongjiang, Jilin, Liaoning, Shandong and Jiangsu. There is cultivation around Nanjing.

4. Black pine: distributed in Liaoning, Shandong, Jiangsu and other places; cultivated in Wuhan, Nanjing, Shanghai, Hangzhou and other places.

Second, the processing method of rosin

1. Rosin: take the original medicinal materials, pick up the impurities, put them in the pot, heat and melt them over low heat, remove sawdust and other impurities, pour them into the water, cool them, take them out, dry them, and mash them.

2. Stir-fry rosin: remove rosin, heat and melt, remove the clarified part, cool it, stir-fry it over low heat and grind it.

3. Make rosin: take fresh onions and add about 20 times the amount of water to fry juice, filter, boil the filtrate, add pure rosin powder, simmer until the rosin completely melts, pour into cold water, wait for solidification, remove and dry. 100kg per raw rosin, use fresh onion 10kg.

The related questions about rosin are summarized and sorted out here by Tuliu.com today.