Grass , trees and other biomass feedstocks consist of a mixture of cellulose , hemicellulose and lignin , a tough material that helps plants keep their shape 草、树和其他生物基原料是由纤维素、半纤维素以及维持植物外形的木质素组合而成的。
2.
The pretreating methods , the enzymatic hydrolysis of cellulose and hemicellulose , the breeding of effective strains for fermentation , and the development of the preparation technology for ligncellulose are mainly introduced 重点介绍了木质纤维素转化为乙醇的原料预处理方法、纤维素和半纤维素的酶法降解、有效可靠的发酵菌种的选育及木质纤维素乙醇制备工艺的开发。
3.
Results showed that during hydrothermal degradation , the contents of hemicellulose and cellulose in lawn - grass and weeds decreased while the content of lignin increased due to derivation and condensation 结果表明，在湿解过程中草坪草和杂草中半纤维素、纤维素的相对含量呈减少趋势；木质素类物质经过衍生和小分子缩合后，其相对含量呈增加趋势；湿解最终产物呈弱酸性，可以用来改良碱性土壤。
4.
Obviously silicon effect is observed in the transition stage . ( 2 ) thermal decomposition of bamboo is mainly concerned with radicals from the decomposition of hemicellulose , cellulose , and lignin in bamboo . ( 3 ) moisture and the carbonized atmosphere have effects on the properties and relaxation mechanism of spin centers ( 3 )竹炭中的水分和炭化气氛对自旋中心的性质和弛豫机制都产生了比较明显的影响，并且在不同的炭化阶段产生的影响不同。
5.
Quantitative analysis procedure of lignocellulose solid substrate including hemicellulose , cellulose and lignin , ignition method , volumetric method and soak extract method were utilized to study the changes of chemical components in lawn - grass and weeds during hydrothermal degradation with different conditions 摘要运用木质纤维素固体基质半纤维素、纤维素和木质素定量分析程序等分析检测了不同湿解工况下草坪草和杂草主要组分的化学变化。
