First, the strain, was treated by NTG, DES, then the methionine induction model and methylamine tolerance model were used as screening models to select strains, as a result, a favorable strain DMa-46 was obtained, its B1a components was about 43.2%.
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释义
首先采用了亚硝基胍和硫酸二乙酯进行诱变处理,处理后采用了甲硫氨酸诱导模型和甲胺耐受的模型,对菌株进行了选育,获得了有效组分Bla高达43.;2%25的菌株-DMa-46。
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