Short Retraction NoticeThis article has been retracted to straighten the academic record. In making this decision the Editorial Board follows COPE's Retraction Guidelines. The aim is to promote the circulation of ...Short Retraction NoticeThis article has been retracted to straighten the academic record. In making this decision the Editorial Board follows COPE's Retraction Guidelines. The aim is to promote the circulation of scientific research by offering an ideal research publication platform with due consideration of internationally accepted standards on publication ethics. The Editorial Board would like to extend its sincere apologies for any inconvenience this retraction may have caused. The full retraction notice in PDF is preceding the original paper, which is marked "RETRACTED".展开更多
目的基于质量源于设计(Quality by Design,QbD)理念,开发一种具有较高生物量与较高菌体活力培养特点的大肠埃希菌摇瓶阶段培养工艺。方法以不同摇瓶配置为考察因素,菌体悬浮液A600值、培养物湿菌重和菌体活力值为培养结果考察指标,采用...目的基于质量源于设计(Quality by Design,QbD)理念,开发一种具有较高生物量与较高菌体活力培养特点的大肠埃希菌摇瓶阶段培养工艺。方法以不同摇瓶配置为考察因素,菌体悬浮液A600值、培养物湿菌重和菌体活力值为培养结果考察指标,采用方差分析分析培养结果以获得具有高生物量和高菌体活力的第3次扩增摇瓶配置。以摇床温度和摇床转速为试验因子进行2因子2水平全因子试验,菌体悬浮液A值为响应值,培养累计时间为变量因素,摇床实时在线温度与摇床设备自测转速为补充变量因素,采用函数型主成分分析(functional principal component analysis,FPCA)方法进行广义回归,拟合生长曲线模型,通过生长曲线模型获得优化后的培养停止时间及培养工艺,对响应值添加随机噪声蒙特卡洛模拟(Monte Carlo simulation,MCS),再次优化获得摇床培养工艺设计空间,选择设计空间中最劣条件作为验证试验设定条件,以不同培养停止时间分阶段进行连续10批次验证试验。结果第3次扩增摇瓶配置:5 L一次性高效摇瓶,大面积透气膜盖。培养工艺设计空间:摇床温度36.5~37.5℃,摇床转速220~230 r/min,设计培养停止时间18 h。最劣条件验证试验表明,停止培养时间为16 h时,可获得较高菌体活力值且较低生物量的培养结果,停止培养时间为18 h时,可获得较高水平的生物量及菌体活力值。结论本研究设计的大肠埃希菌摇瓶阶段培养工艺具有较高生物量及较高菌体活力培养特点,同时可依据此培养工艺适应性调整以满足不同培养需求。展开更多
文摘Short Retraction NoticeThis article has been retracted to straighten the academic record. In making this decision the Editorial Board follows COPE's Retraction Guidelines. The aim is to promote the circulation of scientific research by offering an ideal research publication platform with due consideration of internationally accepted standards on publication ethics. The Editorial Board would like to extend its sincere apologies for any inconvenience this retraction may have caused. The full retraction notice in PDF is preceding the original paper, which is marked "RETRACTED".
文摘目的基于质量源于设计(Quality by Design,QbD)理念,开发一种具有较高生物量与较高菌体活力培养特点的大肠埃希菌摇瓶阶段培养工艺。方法以不同摇瓶配置为考察因素,菌体悬浮液A600值、培养物湿菌重和菌体活力值为培养结果考察指标,采用方差分析分析培养结果以获得具有高生物量和高菌体活力的第3次扩增摇瓶配置。以摇床温度和摇床转速为试验因子进行2因子2水平全因子试验,菌体悬浮液A值为响应值,培养累计时间为变量因素,摇床实时在线温度与摇床设备自测转速为补充变量因素,采用函数型主成分分析(functional principal component analysis,FPCA)方法进行广义回归,拟合生长曲线模型,通过生长曲线模型获得优化后的培养停止时间及培养工艺,对响应值添加随机噪声蒙特卡洛模拟(Monte Carlo simulation,MCS),再次优化获得摇床培养工艺设计空间,选择设计空间中最劣条件作为验证试验设定条件,以不同培养停止时间分阶段进行连续10批次验证试验。结果第3次扩增摇瓶配置:5 L一次性高效摇瓶,大面积透气膜盖。培养工艺设计空间:摇床温度36.5~37.5℃,摇床转速220~230 r/min,设计培养停止时间18 h。最劣条件验证试验表明,停止培养时间为16 h时,可获得较高菌体活力值且较低生物量的培养结果,停止培养时间为18 h时,可获得较高水平的生物量及菌体活力值。结论本研究设计的大肠埃希菌摇瓶阶段培养工艺具有较高生物量及较高菌体活力培养特点,同时可依据此培养工艺适应性调整以满足不同培养需求。
