Xylanase production by Paenibacillus campinasensis BL11 and its pretreatment of hardwood kraft pulp bleaching.
作者： Chun-Han Ko , Zi-Ping Lin , Jenn Tu , Chung-Hung Tsai , Chia-Chen Liu
DOI: 10.1016/J.IBIOD.2009.10.001
关键词:
摘要: Production of a single component 41 kDa xylanase from Paenibacillus campinasensis BL11 was conducted under various pH and temperature at the shake flask level. Alternative carbon nitrogen sources were also evaluated. Up to 10.5 IU/mL 29.39 IU/mg specific activity in crude extract obtained 24 h, 37 °C, 8. In addition, same level productions on rice husk straw 2 days incubation. Relative activities 56.8% 51.9% found after 4 h incubation 7 9 65 respectively. Xylanase pretreatments (2.5 IU per gram oven-dry pulp) increased brightness (as much as 4.4 3.9%) viscosity 0.5 0.3 cP) pulp full chlorine dioxide bleaching for untreated oxygen delignified hardwood kraft pulp. Increased benefits pretreatment with increasing dosage time.
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