Manganese peroxidase (MnP) production during biobleaching of unbleached softwood kraft pulp (SWKP) by Phanerochaete chrysosporium was much lower than that of unbleached hardwood kraft pulp (HWKP). Furthermore, in vitro, isolated MnP cannot degrade residual lignin in SWKP without addition of Mn(II), though it can degrade that in HWKP. These differences are due to that SWKP does not contain enough manganese ion for ligninolytic system. Trametes versicolor produced more laccase but delignify SWKP less than P. chrysosporium did. Lignin peroxidase (LiP) was not detected during biobleaching of SWKP by both fungi. Therefore, other enzyme(s) except MnP, laccase, and LiP may be contribute to the delignification under Mn(II)-insufficient condition.
|Publication status||Published - 1997|
|Event||Proceedings of the 1997 9th International Symposium on Wood and Piping Chemistry, ISWPC. Part 1 (of 2) - Montreal, Can|
Duration: Jun 9 1997 → Jun 12 1997
|Other||Proceedings of the 1997 9th International Symposium on Wood and Piping Chemistry, ISWPC. Part 1 (of 2)|
|Period||6/9/97 → 6/12/97|
All Science Journal Classification (ASJC) codes
- Computer Science(all)