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氨化木质纤维的白腐菌降解
  • 期刊名称:纤维素科学与技术
  • 时间:0
  • 页码:34-38
  • 语言:中文
  • 分类:TS721.1[轻工技术与工程—制浆造纸工程] TQ033[化学工程]
  • 作者机构:[1]华南理工大学资源科学与工程学院 制浆造纸工程国家重点实验室,广东广州510640
  • 相关基金:长江学者和创新团队发展计划项目(IRT0552)资助课题.
  • 相关项目:纤维素酶对差异晶态木质纤维素水解功能与动力学及酶分子改造研究
中文摘要:

添加一定量的氨化麦草能促进白腐菌对木质纤维的分解作用,但如果氨化麦草的添加量超过20%,生长基质的重量损失又会下降,降解速率又会降低。比较添加氨化麦草和未添加氨化麦草生长基质经白腐菌降解后的纤维素含量,发现纤维素含量没有发生太大的变化。降解不同天数氨化木质纤维氮含量的变化显示,氮含量的降低率和木质素降解率的变化规律相一致,说明有机结合氮的释放和白腐菌对氮的吸收消耗与木质素的降解有一定的对应关系。

英文摘要:

In this experiment, it was found that addition of ammoniated wheat straw enhanced degradation of lignocellulose by white rot fungus, however, when exerted amount of ammoniated wheat straw exceeded to 20%, the weight loss of the growth substrates fell, degradation velocity decreased, there was no obvious differences of cellulose component in the lignocellulose between the treatment of addition of ammoniated wheat straw and the control during culture. Moreover, it was found that rate of nitrogen loss decreased in the culture substrates was consistent to that of degradation of lignin in the ammoniated wheat straw, indicating that release of nitrogen from the culture substrates was closed related to the absorbance of it by white rot fungus.

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