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杂色云芝分泌的具有螯合铁离子活性的低分子量成分在木素生物降解中作用机制的研究 被引量:3

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摘要 从杂色云芝(Coriolus versicolor)培养基中分离到一类低分子量组分,该组分具有螯合Fe3+的能力,并能够将Fe3+还原为Fe2+,推测该组分可能是Fenton反应中的一类电子传递体.将此组分与酶分离木素(cellulolytic enzyme lignin,CEL)作用,并用1H-NMR,13C-NMR,离子差光谱及碱性硝基苯氧化方法对作用后CEL的结构变化进行了表征.结果表明,该组分能够破坏非酚型木素中的β-O-4结构,并且能够在非酚型木素结构中添加酚羟基,从而导致木素中形成新的酚型亚结构,使木素更易于被漆酶和锰过氧化物酶降解.因此,该组分可以加速木素降解酶对木素的降解.
出处 《中国科学(C辑)》 CSCD 北大核心 2008年第2期173-179,共7页 Science in China(Series C)
基金 国家自然科学基金(批准号:30170027和30371136)资助项目
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