| 混合微生物对茶树叶片中氯氰菊酯的降解特性研究 |
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| 引用本文： | 林淦.混合微生物对茶树叶片中氯氰菊酯的降解特性研究[J].安徽农业科学,2009,37(31):15637-15638. |
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| 作者姓名： | 林淦 |
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| 作者单位： | 襄樊学院化学工程与食品科学学院,湖北襄樊,441053 |
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| 基金项目： | 湖北省教育厅科学技术研究项目，襄樊学院优秀创新团队项目 |
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| 摘 要： | 目的]研究混合微生物对茶树叶片中氯氰菊酯的最佳降解条件。方法]以茶树叶片中的氯氰菊酯为靶标，以对该污染物具有较好降解效果的混合微生物为降解菌源，研究菌体水浴温度、喷洒时间、菌液浓度、作用时间对氯氰菊酯降解率的影响。结果]菌体水浴温度为30℃时作用效果最好，氯氰菊酯降解率可达78％；菌液喷洒时间为17：00左右时，氯氰菊酯降解率最高；菌液OD600=0．8时，氯氰菊酯降解率可达73％以上；喷洒菌液3、5、7d后，氯氰菊酯的降解率分别为55％、78％和90％。结论]混合微生物降解氯氰菊酯的最优条件为：菌体水浴温度30qC，喷洒时间下午5：00，菌体浓度DD600=0．8。
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| 关 键 词： | 茶树叶片 混合微生物 氯氰菊酯 |
Study on Degradation Characteristics of Mixed Microbe on Cypermethrin in Tea Leaves |
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| LIN Gan.Study on Degradation Characteristics of Mixed Microbe on Cypermethrin in Tea Leaves[J].Journal of Anhui Agricultural Sciences,2009,37(31):15637-15638. |
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| Authors: | LIN Gan |
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| Institution: | LIN Gan ( Chemical Engineering and Food Science College of Xiangfan University, Xiangfan, Hubei 441053) |
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| Abstract: | Objective ] The aim was to study the optimal degradation conditions for mixed microbe on cypermethrin in tea leaves. Method ] With cypermethrin in tea leaves as the target and the mixed microbe which had better degradation effect on cypermethrin as the degrading bacteri-a, the effects of water bath temperature of bacteria, spraying time, bacterial concn. and action time on degradation rate of cypermethrin were studied. Result ] When water bath temperature of bacteria was 30℃ , the action effect was the best, and the degradation rate of cypermethrin could reach 78% . When spraying time was about 17:00, the degradation rate of cypermethrin was the highest. When OD_(600) of bacteria solution was 0.8, the degradation rate of cypermethrin could reach above 73%. After 3, 5, 7 d of bacteria solution spraying, the degradation rates of cypermethrin were 55% , 78% and 90% resp. Conclusion] The optimal degradation conditions for mixed microbe on cypermethrin in tea leaves was water bath temperature of bacteria of 30℃., spraying time of 5:00 pm, bacterial concn. of OD_(600) =0.8. |
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| Keywords: | Tea leaves Mixed microbe Cypermethrin |
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