黄曲霉arc-12和裂叶菌arc-11木聚糖酶对龙须草乙醇-碱浆的生物漂白研究

The Journal of Microbiology, Biotechnology and Food Sciences Pub Date : 2021-02-01 DOI:10.15414/JMBFS.2021.10.4.669-673

A. Gautam, Amit Kumar, D. Dutt

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引用次数: 3

摘要

化学漂白前采用木聚糖酶对纸浆进行预处理，可减少对环境的污染。A. flavus ARC-12和S. commune ARC-11在固态发酵条件下产生的木聚糖酶分别为234.26和1147.11 IU/ml，用于龙毛草浆乙醇-苏打的生物漂白。在相同的二氧化氯负荷下，A. flavus ARC-12木聚糖酶和S. commune ARC-11木聚糖酶的漂白效果分别比化学漂白效果提高3.2和1.9% (ISO)。而A. flavus ARC-12木聚糖酶和S. commune ARC-11木聚糖酶预处理可分别减少2.98%和3.82%的二氧化氯耗量。与化学漂白相比，黄曲霉ARC-12和S. commune ARC-11木聚糖酶预处理分别减少23.80%和19.04%的AOX生成。

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BIOBLEACHING OF ETHANOL-SODA PULP OF EULALIOPSIS BINATA BY XYLANASES FROM ASPERGILLUS FLAVUS ARC-12 AND SCHIZOPHYLLUM COMMUNE ARC-11

Environmental pollution can be minimized by using xylanase pretreatment of pulp before chemical bleaching. A. flavus ARC-12 and S. commune ARC-11 produced 234.26 and 1147.11 IU/ml of xylanase under solid-state fermentation that was used for biobleaching of ethanol-soda pulp of Eulaliopsis binata. The brightness of bleached ethanol-soda pulp of E. binata increased by 3.2 and 1.9% (ISO) with A. flavus ARC-12 and S. commune ARC-11 xylanase respectively compared chemical bleaching at the same chlorine dioxide charge. While the consumption of chlorine dioxide were mitigated by 2.98 and 3.82% with A. flavus ARC-12 and S. commune ARC-11 xylanase pretreatment respectively. Moreover, A. flavus ARC-12 and S. commune ARC-11 xylanase pretreatment reduced AOX generation by 23.80 and 19.04% respectively compared to chemical bleaching.

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The Journal of Microbiology, Biotechnology and Food Sciences

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