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中国农学通报 ›› 2015, Vol. 31 ›› Issue (36): 161-164.doi: 10.11924/j.issn.1000-6850.casb15090034

所属专题: 生物技术

• 生物技术科学 • 上一篇    下一篇

纤维素降解细菌的筛选及其酶活测定

蒋明星1,2,丁晓帆1   

  1. (1海南大学环境与植物保护学院,海口 570228;2云南大学微生物研究所,昆明 650091)
  • 收稿日期:2015-09-09 修回日期:2015-11-24 接受日期:2015-09-22 出版日期:2015-12-30 发布日期:2015-12-30
  • 通讯作者: 丁晓帆
  • 基金资助:
    中西部高校项目“热带有害生物生物学及绿色防控关键技术与集成”(ZXBJH-XK005)。

Screening of Cellulose-decomposing Bacteria and Enzymatic Activity Determination

Jiang Mingxing1,2, Ding Xiaofan1   

  1. (1College of Environment & Plant Protection, Hainan University, Haikou 570228; 2Yunnan Institute of Microbiology, Yunnan University, Kunming 650091)
  • Received:2015-09-09 Revised:2015-11-24 Accepted:2015-09-22 Online:2015-12-30 Published:2015-12-30

摘要: 为了充分利用植物废渣中丰富的纤维素资源,以羧甲基纤维素钠(CMC-Na)为唯一碳源的培养基和刚果红染色筛选法从朽木周围富含腐殖质的土壤中筛选得到3株活性较高的纤维素降解细菌:ZWY-3、DP-6和DP-8,并分别在不同的培养时间、培养温度、起始pH、碳源下对3株菌株进行酶活测定。结果表明:3株菌株都在接种后24 h、pH 7、30℃、葡萄糖为碳源时达到产酶高峰,其中接种后24 h时DP-6的酶活最高,达144.86 U;ZWY-3在30℃、pH 7时酶活最大,分别达126.74 U和133.82 U;3株菌株在其最适条件下培养,并以葡萄糖为碳源时,DP-6活性最高,可达218.96 U。3株细菌菌株在降解农业纤维工业中具有良好的应用前景。

关键词: 农村金融, 农村金融, 资源配置, 效率, 黑龙江省

Abstract: In order to take full advantage of cellulose in plant residues, three strains (ZWY-3, DP-6 and DP-8) of cellulose-decomposing bacteria were isolated from the humus-rich soil by the medium with the sole carbon source of CMC-Na and Congo red screening method. Enzyme activity was measured under different incubation time, temperature, original pH and carbon source. The results showed that three strains showed the highest cellulose activity under the condition of 24 h, pH 7, 30℃ and glucose as carbon source, DP-6 had the highest cellulose activity of 144.86 U when the incubation time was 24 h, ZWY-3 had the cellulose activity of 126.74 U when the incubation temperature was 30℃, and the highest cellulose activity of 133.82 U when the pH value was 7. DP-6 showed the highest activity of 218.96 U when cultivated under the optimal condition with glucose as the only carbon source. These three strains showed great potential in the industry of agricultural cellulose-decomposing.

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