论文部分内容阅读
综述了生物制浆的基本原理、技术和机理。在中试车间用Cerporiopsis subvermispora处理巨桉木片,可获得与实验室实验时相同的节能效果,但纸浆强度改进有限,且木片堆被真菌污染。C.subvermispora生物降解木材中木素结构变化的研究表明,生物处理木材的初始阶段会发生木素解聚。酚羟基没有随着芳基醚键的断裂而增加,表明醚键断裂产物仍为醌型结构。另一方面,纤维素对C.subvermispora的攻击更具抵抗力,同时用锰过氧化物酶激发的脂类过氧化反应说明了C.subvermispora对非酚型木素结构的降解,而缺乏纤维二糖水解酶和培养中抑制芬顿反应系统的发生解释了该菌株对纤维素不能有效降解的原因。
The basic principle, technique and mechanism of biological pulping are summarized. Treating Eucalyptus grandis with Cerporiopsis subvermispora in the pilot plant achieved the same energy savings as laboratory experiments, but with limited improvements in pulp strength and contamination of the chip stack with fungi. C.subvermispora Studies on the biodegradation of lignin in wood show that lignin depolymerization occurs in the initial stages of bioprocessing wood. The phenolic hydroxyl group did not increase with the cleavage of the aryl ether bond, indicating that the cleavage product of the ether bond is still a quinoid structure. On the other hand, cellulose was more resistant to challenge with C. subvermispora, while lipid peroxidation induced by manganese peroxidase demonstrated the degradation of non-phenolic lignin structure by C. subvermispora, The inhibition of the Fenton reaction system in glycohydrolase and in culture explains the reason why this strain can not effectively degrade cellulose.