Where are the main producing areas of rosin?

Rosin is a relatively well-known traditional Chinese medicinal material. It is the solid resin remaining after the oleoresin exuded from several plants of the genus Pinus in the family Pinaceae is distilled or extracted to remove the volatile oil. So, do you know about the producing areas of rosin? Let's take a look!

1. Producing areas of rosin

Rosin producing areas are found throughout the country. The main sources are Masson pine, Chinese pine, Japanese red pine, and Japanese black pine, which are very well-known traditional Chinese medicinal materials. They can be used both externally and internally, but medical advice must be followed.

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

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

3. Japanese red pine: distributed in Heilongjiang, Jilin, Liaoning, Shandong, Jiangsu. Cultivated in the Nanjing area.

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

2. Processing methods of rosin

1. Rosin: take the raw medicinal material, remove impurities, place it in a pot, heat over a gentle fire to melt it, remove wood chips and other impurities, then pour it into water, let it cool, take it out, air-dry it, and crush it when using.

2. Fried rosin: take clean rosin, heat until melted, take out the clarified portion, let it cool, fry over a low fire, and then grind it fine.

3. Prepared rosin: take fresh scallions, add about 20 times the amount of water, decoct to make a juice, filter, boil the filtrate, add clean rosin powder, heat over a gentle fire and cook until the rosin is completely melted, pour it while hot into cold water, and after it solidifies, take it out and dry it in the shade. For every 100 kg of raw rosin, use 10 kg of fresh scallions.

That is the summary compiled by Tuliu.com today regarding questions related to rosin.