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| Study on vancomycin chromatography technology |
| Li Ning,Zhang Qiang,Wang Hongxia |
| North China Pharmaceutical Corporation Ltd.,Shijiazhuang 052160, China |
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Abstract Separation and purification of low content vancomycin crude by high pressure chromatography column using a new type of mixed cation exchange chromatography medium. The optimum chromatographic conditions were determined by contrast experiment: the concentration, pH value and volume of washing impurity were 0.5% sodium bicarbonate solution,6.9 and 5 BV respectively, the concentration of sodium bicarbonate in eluent was 1%, and the elution concentration of ethanol was 10%. The purity of vancomycin produced by this process is >95%, and the yield is >70%.
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