摘要
蒸汽爆破棉秆的韧皮、枝和主干经嗜碱芽孢杆菌NT 1 9降解 1 4天后 ,其失重率分别为 2 3 8%、2 0 2 %和 1 4 0 %。该嗜碱菌株在初始 1 4天培养中能保持与白腐真菌Phanerochaetechrysosporium相近的降解率 ,并能优先降解棉秆主干的半纤维素组分。X 衍射显示 ,棉秆的韧皮纤维经嗜碱芽孢杆菌NT 1 9降解后 ,其相对结晶度降低了 7 91 %。扫描电镜证实微生物降解去除了韧皮纤维束中的部分中胶层。
The exploded bast, branch and stem of cotton stalk were degraded by alkalophilic Bacillus NT-19, and the weight loss amounted to 23.8%, 20.2% and 14.0% respectively after 14 d of incubation. Compared with white-rot fungal (Phanerochaete chrysosporium), Bacillus NT-19 exhibited similar degradation efficiency during the initial 14 d of incubation and could preferentially degrade the non-cellulose components of cotton stem. X-ray diffraction revealed that the relative degree of crystallinity of bast fibers had 7.91% decrement due to the bacterial degradation, and scanning electron micrograph confirmed that partial middle lamella was removed from the fiber bundle in the course of microbial degradation.
出处
《中国造纸学报》
EI
CAS
CSCD
北大核心
2003年第2期27-29,共3页
Transactions of China Pulp and Paper
基金
华南理工大学制浆造纸工程国家重点实验室访问学者基金资助项目
