硝磺草酮降解菌HZ-2制剂固定化载体材料性能的比较

发布时间：2018-05-03 13:02

本文选题：硝磺草酮 + 改性蔗渣　；参考：《华南农业大学学报》2016年03期

【摘要】：【目的】研究改性蔗渣MSB、MSB-Mo、MSB-Cl对硝磺草酮降解菌HZ-2的降解能力的影响。【方法】以这3种改性蔗渣和活性炭为固定化载体,对固定化后菌制剂的降解性能进行研究。【结果】降解菌制剂培养48 h后,D600 nm均较高,表明MSB、MSB-Mo、MSB-Cl及活性炭均具备较强的固菌能力;培养3 d后,以改性蔗渣为载体的固菌制剂对LB培养基中硝磺草酮的降解率高于85%,显著优于活性炭,其中改性蔗渣MSB-Mo效果突出,降解率达96.35%。添加葡萄糖辅料7 d后,这3种改性蔗渣对土壤中硝磺草酮的降解率均高于99%。【结论】改性蔗渣MSB-Mo是固定降解菌株的最佳新型生物载体材料。
[Abstract]:[objective] to study the effect of modified bagasse MSB-Mo-MSB-Cl on the degradation ability of nitrosulfoxone degrading bacteria (HZ-2). [methods] three modified bagasse and activated carbon were used as immobilized carriers. The biodegradability of the immobilized bacteria preparation was studied. [results] after 48 h culture, the D600 nm was higher, which indicated that MSB-Mo-MSB-Cl and activated carbon had strong bacteriostasis ability, and after 3 days of culture, the biodegradability of MSB-Mo-MSB-Cl and activated carbon were higher than that of MSB-MSB-Mo-MSB-Cl. The degradation rate of nitrosulfoxone in LB medium was higher than that of activated carbon, and the degradation rate of modified bagasse MSB-Mo was 96.35. After adding glucose excipient for 7 days, the degradation rate of nitrosulfoxone in soil was higher than that of bagasse modified bagasse. [conclusion] modified bagasse MSB-Mo is the best biological carrier material for immobilization of biodegradable strains.
【作者单位】：华南农业大学农学院;华南农业大学材料与能源学院;
【基金】：广东省科技计划项目(2014B020206003)
【分类号】：X172;X592

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