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Fed-Batch Production of Tetanus Toxin by Clostridium Tetani

机译:破伤风梭菌补料分批生产破伤风毒素

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摘要

This study deals with the effects of the initial nitrogen source (NZ Case TT) level and the protocol of glucose addition during the fed-batch production of tetanus toxin by Clostridium tetani. An increase in the initial concentration of NZ Case TT (NZ_0) accelerated cell growth, increased the consumption of the nitrogen source as well as the final yield of tetanus toxin, which achieved the highest values (50-60 L_f/mL) for NZ_0 > 50 g/L. The addition of glucose at fixed times (16, 56, and 88 h) ensured a toxin yield (~60 L_f/mL) about 33% higher than those of fed-batch runs with addition at fixed concentration (~45 L_f/mL) and about 300% higher than those obtained in reference batch runs nowadays used at industrial scale. The results of this work promise to substantially improve the present production of tetanus toxin and may be adopted for human vaccine production after detoxification and purification.
机译:这项研究涉及破伤风梭菌破伤风毒素补料分批生产过程中初始氮源(NZ Case TT)水平和添加葡萄糖方案的影响。 NZ Case TT(NZ_0)初始浓度的增加加速了细胞的生长,增加了氮源的消耗以及破伤风毒素的最终产量,使NZ_0达到最高值(50-60 L_f / mL)。 50克/升。在固定时间(16、56和88小时)添加葡萄糖确保毒素产量(〜60 L_f / mL)比以固定浓度(〜45 L_f / mL)添加的分批补料运行高约33%并且比当今工业规模使用的参考批次运行获得的结果高约300%。这项工作的结果有望大大改善目前的破伤风毒素生产,并可在排毒和纯化后用于人类疫苗生产。

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