方案摘要
方案下载| 应用领域 | 石油/化工 |
| 检测样本 | 其他 |
| 检测项目 | 含量分析>氧 |
| 参考标准 |
On-line measurement of dissolved O2 in shake-flasks was realized via immobilized sensor spots containing a fluorophore with an O2 dependent luminescent decay time. An unaffected sensor signal during 80 autoclaving cycles suggests multi-usage of sensor equipped shake-flasks. The sensor had a response time of 6 s. Quantification of gas-liquid mass transfer revealed maximum kLa values of 150 h−1, from which maximum O2 transfer capacity of 33 mM h−1 was calculated. Liquid volume and shaking frequency have a strong influence on kLa. Exemplified by cultivations of Corynebacterium glutamicum the importance of shaking rate for O2 supply of bacterial cultures is shown. Sampling of microbial cultures with intermittent shaking of a few minutes can cause O2 limitation. Based on the results of this work a simple and straightforward tool is now available for accurate O2 sensing in shake-flasks, which are widely used in microbial cultivations.
相关产品
关注
拨打电话
留言咨询
