纤维素降解菌JJU-A生化性质研究

The Bicochemical Properties of Cellulose-Degrading Strain JJU-A

文章从秸秆还田土壤中筛选出一株纤维素降解菌JJU-A,采用PDA培养基分离纯化菌株,并通过单因素试验法确定培养时间、温度、pH值以及碳源浓度对JJU-A生长状况的影响。结果表明:纤维素降解菌JJU-A的生长期大约为6d,最适生长温度为25℃,最适pH值为5,最适碳源浓度为10.0g/L。文章分离筛选出高效纤维素降解菌JJU-A并研究其生化性质,以期更大程度地加速秸秆中纤维素的降解,为有效分解利用秸秆等纤维素废弃物提供优势菌源。

The cellulose-degrading stranin JJU - A was isolated from the straw returning soil by PDA medium. The effects of appropriate incubation time, temperature, pH and carbon concentration on strain growth were assessed. The results showed that the growing preiod was approximately 6 days. The optimum temperature, pH and carbon concentration were 25℃, 5 and 10.0 g/L respectively. Based on the study on the isolation and bio- chemical properties of cellulose--degrading strain JJU - A, it would take advantage to provide the strain source to degrading the agriculutral waste.