期刊
BIOTECHNOLOGY AND APPLIED BIOCHEMISTRY
卷 54, 期 -, 页码 163-170出版社
PORTLAND PRESS LTD
DOI: 10.1042/BA20090141
关键词
biological system; bioreactor; gas transfer coefficient of sterile closure; shake flask; unsteady-state modelling
In the present study, the special shake flasks, so-called ventilation flasks, are equipped with oxygen sensors and then an unsteady-state gas transfer model for shake flasks was developed and experimentally investigated for a wide range of gas transfer resistances (k(plug)). For the validation of our unsteady-state model to simulate the gas transfer in a biological system in the ventilation flasks, a strain of Corenobacterium glutamicum DM1730 was used as a model organism. For further easy processing, the resulting total mass-transfer resistance (k(plug)) is described as a function of the mass flow through the sterile plug (OTR(plug)) by an empirical equation. This equation is introduced into a simulation model that calculates the gas partial pressures in the headspace of the flask. Additionally, the gas transfer rates through the sterile closure and gas/liquid interface inside the flask are provided. This unsteady-state model would be a very useful method for scaling up from a shake flask to a fermentor; comparing the results of the gas concentration in the gas phase, there is good agreement between the introduced unsteady-state model and experimental results for the biological system.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据