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长孢被孢霉PFY降解木质素的初步研究 被引量:7

Degradation of lignin by Mortierella elongata PFY
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摘要 为了研究高效降解木质素类化合物,利用木质素磺酸钠为唯一碳源,采用苯胺蓝和愈创木酚平板法从土壤分离、筛选得到一株具有高降解木质素活性的丝状真菌,经鉴定为长孢被孢霉PFY(Mortierella elongataPFY)。在添加0.5g/L葡萄糖,最适氮源及浓度为1.5g/L硫酸铵,底物浓度为2g/L,30℃,pH=7.0的条件下,木质素降解率可达52.4%。通过对木质素降解特性的初步分析表明,在该降解过程中主要起作用的是木质素过氧化物酶和漆酶。这为以稻草秸秆为代表的生物质废弃物资源化提供了借鉴,也有利于造纸黑液中木质素的回收利用。 为了研究高效降解木质素类化合物,利用木质素磺酸钠为唯一碳源,采用苯胺蓝和愈创木酚平板法从土壤分离、筛选得到一株具有高降解木质素活性的丝状真菌,经鉴定为长孢被孢霉PFY(Mortierella elongataPFY)。在添加0.5g/L葡萄糖,最适氮源及浓度为1.5g/L硫酸铵,底物浓度为2g/L,30℃,pH=7.0的条件下,木质素降解率可达52.4%。通过对木质素降解特性的初步分析表明,在该降解过程中主要起作用的是木质素过氧化物酶和漆酶。这为以稻草秸秆为代表的生物质废弃物资源化提供了借鉴,也有利于造纸黑液中木质素的回收利用。
出处 《化工进展》 EI CAS CSCD 北大核心 2012年第S1期80-85,共6页 Chemical Industry and Engineering Progress
关键词 木质素 长孢被孢霉PFY 降解 稻草秸秆 lignin mortierella elongata PFY degradation rice straw
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参考文献13

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二级参考文献47

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