Study on Purification Technique of Blogical Chinese Herbal Medicine in Micro/Nano Particles of Chinese-fir Cells

In order to purify blogical Chinese herbal medicine from wood etractives and hmicellulose at the molecular level, the fresh Chinese-fir cells were extracted in LiOH solution, and were analyzed by ZETA and SIZER to find out the leaching rule of nano particles in Chinese-fir cells. The results are as follows: (1) The extraction mass arrived at the maximum value when LiOH concentration is about 17.5%. (2) The diameter the micro/nano particles of wood extractives and hemicellulose is chiefly about 1720 nm according to volume fraction. Micro/nano particles in the diameter of 24.4-91.3 nm, 342-1720 nm, 0-24.4 nm is the most at the extracting time of 3 h, 16 h, 24 h, respectively . (3)The diameter the micro/nano particles of wood extractives and hemicellulose is chiefly between 913 nm and 1720 nm according to number fraction.Micro/nano particles in the diameter of 91.3- 342 nm, 91.3-342 nm, 91.3-1720 nm is the most at the extracting time of 3 h, 16 h, 24 h, respectively.