Zhang Xuejun, deputy director of Guizhou Key Laboratory of fermentation engineering and biopharmaceutical and professor of Guizhou University, led the research team to combine biological enzymolysis chemistry with engineering. Recently, in the batch test of eucommia bark conducted by Henan hengruiyuan Industrial Company, the extraction of Eucommia ulmoides gum by whole biological enzymolysis was realized, and the purity of Eucommia ulmoides gum obtained reached more than 92%, It has reached the grade that can be used as general industrial raw materials. The results show that it is possible to produce Eucommia ulmoides gum directly with whole biological enzyme without chemical means.

Total degradation of eucommia bark in enzymatic hydrolysis reactor

After a variety of enzymatic hydrolysis, the plant tissue structure of bark has been destroyed and disintegrated, the original tissue state no longer exists, its cell structure, physical strength and physical properties have changed seriously, and the gutta percha contained in it is free from its original tissue. After three different enzymatic hydrolysis, Eucommia ulmoides gum is completely exposed. After washing a very small amount of plant tissue debris, Eucommia ulmoides gum with high purity can be obtained. Under better enzymatic hydrolysis conditions, the net content of Eucommia ulmoides gum can reach more than 90%.

Crude gutta percha obtained by total enzymatic hydrolysis

Original Eucommia ulmoides dry gum extracted by total enzymatic hydrolysis

Dry rubber products (320 g)

Eucommia ulmoides dry gum contains only a small amount of non degradable wood debris, which is difficult to remove in laboratory research. After using enzymatic hydrolysis equipment, the enzymatic hydrolysis will be more thorough, the dissolution and removal of plant tissue will be faster and the time will be shorter. More importantly, the more thorough removal of plant tissue to make it reach the purity of direct use can save the traditional process of dissolving and refining Eucommia ulmoides gum with petroleum ether, which greatly improves the safety of production and avoids the potential fire hazard caused by the use of petroleum ether. It also greatly saves the production cost. The Eucommia ulmoides gum extracted by whole biological enzymatic hydrolysis does not change the original form of Eucommia ulmoides gum. It is a real natural filament Eucommia ulmoides gum.