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OALib Journal期刊
ISSN: 2333-9721
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methylobacteriumsp.yal-2对乙酰甲胺磷的降解特性
DOI: 10.3724/SP.J.1145.2012.00438, PP. 438-443
Keywords: 乙酰甲胺磷,methylobacteriumsp.yal-2,降解特性,系统发育分析,农药残留去除
Abstract:
从有机磷生产厂家的下水道污泥中分离出一株对高浓度和低浓度乙酰甲胺磷都具有高效降解能力的寡营养菌yal-2，根据形态、生理生化和16srrna基因系统发育分析，将菌株yal-2鉴定为methylobacteriumsp.降解特性实验表明，菌株yal-2能利用乙酰甲胺磷为唯一碳源生长和降解；在添加了甲醇的无机盐培养基中，84h可完全降解300mgl-1乙酰甲胺磷，24h将50mgl-1和10mgl-1乙酰甲胺磷降至非检测水平；4d能完全去除100mgl-1甲胺磷，5d分别降解58.4%和40.6%的100mgl-1乐果、敌敌畏.小青菜农药残留去除实验显示，菌株yal-2可在7d内将乙酰甲胺磷和甲胺磷将至限量水平.结果表明，将菌株yal-2应用于保证果蔬等食品的食用安全是可行的.
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