Degradation and effective utilization of the woody biomass using the microbe which can be grown under low-nutrition.

本研究的目的是利用生长在低营养条件下的微生物，使木质生物质成为有用的资源。分离出一些以木质生物质为唯一碳源的酵母。然后，本研究进行了酵母对生物质的分解和同化实验，目的是有效利用未利用的生物质。生长的酵母可以作为营养物质的来源，如维生素和矿物质。这一研究成果为生物质有效利用开辟了新途径。将酵母接种到添加生物质作为唯一碳源的无机盐液体培养基中，进行长期培养。很明显，粉末型吸管比固体型吸管更容易降解。对粉末型秸秆进行了长期培养。这些结果表明，酵母可以在低营养条件下生长，将木质生物质转化为有效资源。

The purpose of this study is to use the microbe that grows under low-nutrition and to make a woody biomass a useful resource. A number of yeast were isolated that used woody biomass as the only carbon source. Then, this research conducted decomposition and assimilation experiment of the biomass by the yeast for the purpose of effective use of the unutilized biomass. The grown yeast is reused as the sources of nutrient, such as vitamin and a mineral. This research result contributes to the new method of biomass effective utilization.The yeast were inoculated to the mineral salt liquid medium which added the biomass as the only carbon source, and long-term culture were performed. It was clear that the powder type of the straw was more easily degradable than the solid type of that. The powder type of the straw was cultured for long term. These results point out the possibility that the yeast which can be grown under low-nutrition can transform woody biomass into effective resource.