Animal Nutrition Group, Department of Animal Science, Wageningen University, Wageningen, The Netherlands.
Bioresour Technol. 2012 May;111:336-42. doi: 10.1016/j.biortech.2012.02.001. Epub 2012 Feb 8.
Eleven white-rot fungi were examined for their potency to degrade lignin and to improve the rumen fermentability of wheat straw. The straw was inoculated with the fungi and incubated under solid state conditions at 24°C for 0-49 days to determine changes in in vitro gas production and chemical composition. Results show that some fungi could degrade lignin by as much as 63%, yet the delignification was highly correlated with the degradation of hemicellulose (r=0.96). Reduction in lignin was poorly (r=0.47), but the ratio between lignin and cellulose loss was strongly (r=0.87) correlated with the increase in gas production. Treatment with Ceriporiopsis subvermispora for 49 days increased total gas production of the straw from 200 to 309 ml/g organic matter (OM). It was concluded that some fungi highly selective for lignin and not for cellulose are able to improve the nutritive value of wheat straw as a ruminant feed.
研究了 11 种白腐真菌对木质素的降解能力及其对小麦秸秆瘤胃发酵性能的改善作用。将秸秆接种真菌，在 24°C 下进行固态发酵 0-49 天，以确定体外产气量和化学成分的变化。结果表明，一些真菌可以降解高达 63%的木质素，但木质素的脱除与半纤维素的降解高度相关(r=0.96)。木质素的减少与纤维素的损失(r=0.47)相关性较差，但木质素与纤维素损失的比例与产气量的增加呈强烈相关(r=0.87)。用 Ceriporiopsis subvermispora 处理 49 天，可使秸秆的总产气量从 200 毫升/克有机物(OM)增加到 309 毫升/克 OM。结论是，一些对木质素有高度选择性而不是纤维素的真菌能够提高小麦秸秆作为反刍动物饲料的营养价值。
