Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria INIA, Carretera de la Coruña, km 7.5, 28040 Madrid, Spain.
Bioresour Technol. 2011 Mar;102(6):4530-5. doi: 10.1016/j.biortech.2010.12.090. Epub 2010 Dec 30.
The aim of this work was to evaluate the response to biobleaching of steam exploded kraft pulps and to compare the results with the controls. For this end, a laccase-mediator treatment using commercial laccase (Novozyme 51003) and a natural mediator (acetosyringone) were assayed, followed by alkaline extraction and hydrogen peroxide stages. Our approach resulted in exploded biobleached pulps with lower kappa number and improved optical properties compared to controls, even after subjecting pulps to accelerated ageing. Additionally, use of hydrogen peroxide was reduced. The LMS (laccase-mediator system) had a smaller impact on the properties of the bleached pulps and on hydrogen peroxide consumption than the steam explosion process did.
本工作旨在评估蒸汽爆破硫酸盐浆对生物漂白的响应，并将结果与对照进行比较。为此，采用商业漆酶（Novozyme 51003）和天然介体（乙酰丁香酮）进行漆酶-介体处理，然后进行碱性抽提和过氧化氢处理。与对照相比，我们的方法得到的爆炸生物漂白浆的卡伯值更低，光学性能更好，即使在加速老化后也是如此。此外，过氧化氢的用量也减少了。与蒸汽爆破过程相比，LMS（漆酶-介体系统）对漂白浆性能和过氧化氢消耗的影响较小。
