発酵生産における計測と制御に関する研究

概要

論文の詳細を見る
As an application of microcomputers to the instrumentation and control of fermentation processes a few examples were introduced as follow : 1. A kinetic model for batch ethanol fermentation was proposed on the basis of enzyme deactivation kinetics. In the model, growth and ethanol production were expresed as functions of the "integrated ethanol concentration" as follows : μ=μ_0 exp(-k'⎰pdt) (1)ν=αμ+β_0exp(-k"⎰pdt) (2)where μis the specific growth rate; ν, the specific ethanol production rate; p, ethanol concentration; α, μ_0,k', k" and n are constants.The proposed model simulated the temperature dependent ethanol fermentations, suggesting that the model might be applicable for the optimization of ethanol batch culture by controling the culture temperature as an operating variable.2. The batch fermentation of growing yeast in a glucose medium was investigated using a fermentor linked to a stopped-flow adiabetic vessel. The heat production of the fermentation process could be expressed as following relationship;(dQ)/(dt)=A(dx)/(dt)+B(dp)/(dt)+Cx'Q, is heat production; x, cell mass; x', viable cell mass; A, B, and C, constants. With heat production and eqs. (1)and (2), cell mass and ethanol concentration were calculated and displayed on mointor screen of microcomputer with heat production during the fermentation period.3. A microcomputer system providing feedforward and feedback control of sugar feed-rate to avoid the glucose effect in baker's yeast production was examined.This simple and reliable control strategy afforded an almost maximal growth yield 0.5g-cell/g-glucose and specific growth rate of 0.17 l/h by preventing production of ethanol by glucose effect.
社団法人日本生物工学会の論文
1988-03-25

発酵生産における計測と制御に関する研究

スポンサーリンク

概要

著者

関連論文

スポンサーリンク