Influence of Tannin-Copper Complexes as Preservatives for Wood on Mechanism of Decomposition by Brown-Rot Fungus Fomitopsis palustris
Influence of Tannin-Copper Complexes as Preservatives for Wood on Mechanism of Decomposition by Brown-Rot Fungus Fomitopsis palustris
复制标题
单宁铜复合物作为木材防腐剂对褐腐真菌Fomitopsis palustris分解机制的影响
DOI：
10.1515/hf.2001.077
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
K. Yoshino
中科院分区：
文献类型：
--
作者：
H. Yamaguchi;K. Yoshino
研究了化学改性单宁和单宁-氨-铜防腐剂的防腐机理。木材腐朽菌为F.通过用化学改性单宁与氨和氯化铜混合制成的试剂处理木材，沼泽化得到显著抑制。木粉经这些药剂处理后，菌丝生长量和蛋白质生成量均有不同程度的增加。化学改性单宁（RMT和CMT）或单宁与氨铜复合物的防腐效果，主要是由于抑制了木聚糖酶、甘露聚糖酶和Cx-纤维素酶的活性。在加入处理木粉的培养基中，草酸能降低培养基的pH值，而F. palustris生产，不是生成。这种效果的效力被认为是由于铜的螯合作用，铜是F. palustris，通过单宁，和/或通过氨-铜中和或抑制草酸的产生。
Summary The mechanism of preservation by chemically modified tannin and tannin-ammonia-copper agents was examined. Wood decay by F. palustris was markedly suppressed by processing wood with agents made by mixing chemically modified tannins with ammonia and cupric chloride. When wood powder was treated with these agents, mycelial growth and generated protein increased to some extent. The preservative effects of the chemically modified tannins (RMT and CMT) or compound agents composed of the tannins and ammonia-copper were considered to be due to inhibition of the activities of xylanase, mannase and Cx-cellulase. In the culture medium in which treated wood powder was brought in with these agents, drop of pH by oxalic acid, which F. palustris produces, is not generated. The potency of the effect was thought to be due to chelation of copper, an essential trace element for wood decay by F. palustris, by the tannin, and/or neutralization or suppression of oxalic acid production by ammonia-copper.