[Comparison of component from different species of Inonotus obliquus]

In this paper, water content, mineral element and active ingredient concentration on fifteen Inonotus obliquus which comes from all over the world were studied. In the aspect of water content, the free water content of Finnish birch was the highest, reaching 77.21%, significantly better than that of other strains. The free water content of JL04 is the lowest, only 54.6%. The bound water content of HLJ01 which from Heilongjiang is the highest, reaching 10. 74% , significant differences among other strains. The bound water content of Birch Russia was the lowest. In the aspect of mineral element, the calcium content of NBRC9788 was the high- est (3.49 mg · g(-1)), significantly better than other strains. The second was Finnish birch. The lowest was CX02. The phosphorus content of NBRC9788 was the highest (210.12 μg · g(-1)), significantly superior to other strains. The lowest was JL04. In the aspect of active ingredient concentration, the triterpenoids content of HLJ01 was highest (23.7 mg · g(-1)), significantly better than other strains. It was good strains for biological products research and development and then was Finnish birch. The betulin content of MAFF420165 and MAFF420308 was low, they were not suitable for production. The polysaccharide content of Finnish birch was the highest (9.7%), significantly better than the other strains, it is one of the most ideal and good strains to develop polysaccharide. The polysaccharide content from MAFF420308 and MAFF420256 was 1.2%, lower than other strains. We suggest that avoid using these strains in the study of polysaccharide product development.