| 摘要 |
PCT No. PCT/GB93/00011 Sec. 371 Date May 26, 1994 Sec. 102(e) Date May 26, 1994 PCT Filed Jun. 1, 1993 PCT Pub. No. WO93/14402 PCT Pub. Date Jul. 22, 1993A method and apparatus for determining gas hold-up in a fermentation culture, in which, prior to aeration and during fermentation, a high frequency alternating signal is input to electrodes in electrical contact with the culture, the magnitude of the reactive current signal leading the voltage in the electrode circuit is determined and the difference in said magnitudes prior to aeration and during fermentation is used as a measure of the gas hold-up. The system may be combined with various methods of measuring biomass to give a gas hold-up corrected value of biomass. |
