SOLID-STATE NMR-STUDIES OF LIGNIN AND PLANT POLYSACCHARIDE DEGRADATION BY FUNGI
SOLID-STATE NMR-STUDIES OF LIGNIN AND PLANT POLYSACCHARIDE DEGRADATION BY FUNGI
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DOI：
10.1515/hfsg.1991.45.s1.49
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发表时间：
1991-09-01
期刊：
影响因子：
2.4
通讯作者：
HAW, JF
中科院分区：
文献类型：
--
作者：
MARTINEZ, AT;GONZALEZ, AE;HAW, JF
通过 CPMAS C-13 NMR 研究了木材自然腐烂过程中的降解模式，并与木质素真菌固态发酵中产生的降解模式进行了比较。在灵芝 (Ganoderma australe) 自然腐烂乌尔莫木 (Eucryphia cordifolia) 的过程中，观察到木质素 C-13 NMR 信号减少，从而产生用作牛饲料的材料。在研究的自然条件下，这种白腐真菌可以去除基本上所有的木质素，而褐腐真菌则破坏木材的碳水化合物成分，留下几乎纯木质素的残留物。用木质素真菌进行固态发酵后，木材和秸秆成分的变化相对较小，但底物消化率有所增加。栓菌和杏鲍菇转化麦秆后发现不同的降解模式。后者优先去除木质素并轻微损失植物碳水化合物。
Degradation patterns during natural decay of wood were studied by CPMAS C-13 NMR and compared with those produced in solid-state fermentation with ligninolytic fungi. Decrease of lignin C-13 NMR signals was observed during the natural decay of ulmo wood (Eucryphia cordifolia) by Ganoderma australe, giving rise to a material used as cattle feed. In the natural conditions studied, this white-rot fungus can remove essentially all of the lignin, in contrast with brown-rot decay which destroyed the carbohydrate components of wood to leave a residue of almost pure lignin. Changes in wood and straw constituents after solid-state fermentation with ligninolytic fungi were comparatively less intense, but increases in substrate digestibility were obtained. Different degradation patterns were found after wheat straw transformation by Trametes versicolor and Pleurotus eryngii. The latter produces preferential removal of lignin and slight loss of plant carbohydrates.