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Abstract:
研究了酵母转化L-苯丙氨酸(Phe)合成2-苯乙醇(Pea)的常规和带原位转移的补料分批培养过程特性.在常规培养中,以优化补料策略将糖浓度控制在0.1~0.3g/L,使副产物乙醇浓度小于1%,而Pea的最高终浓度仅为3.85g/L,因产物抑制效应无法获得更高浓度.采用大孔树脂FD0816作为原位转移产物的介质,Pea最终总浓度达到12.80g/L,平均生成速率为0.38g/(L·h),比未添加树脂的培养体系分别提高了232%和35.7%.采用乙醇溶液对发酵用的树脂进行动态洗脱,Pea洗脱率达到95%以上,洗脱液中Pea浓度达到60g/L.
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Source :
过程工程学报
Year: 2009
Issue: 01
Volume: 9
Page: 128-132
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 0
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