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Ruminal Bacterial Degradation of Benzo(b)-thien-4-yl Methylcarbamate (Mobam) and Effect of Mobam on Ruminal Bacteria

机译:苯甲酰(b)-噻吩-4-基氨基甲酸甲酯(Mobam)的瘤胃细菌降解及Mobam对瘤胃细菌的影响

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Mixtures of ruminal bacteria degraded benzo(b)thien-4-yl methylcarbamate (Mobam) to 4-hydroxybenzothiophene, CO2, and polar product(s). The metabolite, 4-hydroxybenzothiophene, was identified (after acetylation) by comparative infrared and mass spectrometry with an authentic sample. Carbon dioxide and polar product(s) were produced by degradation of the methylcarbamate moiety. Ten previously characterized strains of ruminal bacteria with diverse physiological capabilities did not degrade Mobam. However, three tributyrin-hydrolyzing strains were isolated that did degrade Mobam. Mobam inhibited growth of two of ten strains isolated on Mobam-free glycerol-tributyrin enrichment medium. One of these strains was also sensitive to 2-carbomethoxy-propene-2yl dimethyl phosphate (Phosdrin). Mobam prevented some ruminal bacteria from producing zones of hydrolysis in tributyrin emulsion media and inhibited some ruminal bacteria from degrading 1-naphthyl acetate and fluorescein-3′,6′-diacetate.
机译:瘤胃细菌的混合物将苯并(b)噻吩-4-基甲基氨基甲酸酯(Mobam)降解为4-羟基苯并噻吩,CO2和极性产物。代谢物4-羟基苯并噻吩(在乙酰化后)通过比较红外和质谱法与真实样品进行鉴定。通过降解氨基甲酸甲酯部分产生二氧化碳和极性产物。具有多种生理功能的十种先前表征的瘤胃细菌菌株不会降解Mobam。但是,分离了三个降解三丁酸甘油酯的菌株,它们确实降解了莫巴姆。 Mobam抑制了在不含Mobam的甘油-三丁酸甘油酯富集培养基上分离的十个菌株中两个菌株的生长。这些菌株之一也对2-羰基甲氧基-丙烯-2-基二甲基磷酸酯(磷酸酯)敏感。 Mobam阻止了一些瘤胃细菌在三丁酸甘油酯乳液介质中产生水解区域,并抑制了一些瘤胃细菌降解乙酸1-萘酯和3',6'-二乙酸荧光素。

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