Effect of Temperature Control on Acetic Acid Production

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Information about Effect of Temperature Control on Acetic Acid Production
Education

Published on March 12, 2009

Author: mallikab

Source: slideshare.net

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Presentation given at Naraesuan University Conference in 2007

M. Boonmee , S. Intarapanich, O. Cotano Department of Biotechnology Faculty of Technology, Khon Kaen University

Cane sugar sugar Chemicals Ethanol Ethyl acetate Acetic acid

Strain selection (TISTR) Batch fermentation Fed-batch fermentation Initial ethanol concentration Productivity (flask) Aeration study pH study

46.0 44.3 42.6 19 ± 2 °C 23 ± 2 °C 26 ± 2 °C 38 h 40 h Acetic acid production at room temperature (flask shaking at 200 rpm)

Effect of controlled temperature (acetic acid concentration) 44.6 44.4 46.0 44.3 42.6 44.9

Effect of controlled temperature (acetic acid yield) 1.02 0.97 0.94 0.97 0.93 0.92

Effect of controlled temperature (acetic acid productivity) 0.59 0.86 0.57 0.70 0.35 0.87

Acetic acid production in 2–L fermenter (2 vvm, pO 2 20% , 30°C) 19.7

Acetic acid production in 2–L fermenter (2 vvm, pO 2 20% , 30°C) 18.8

Acetic acid production in 2–L fermenter (2 vvm, pO 2 20% , 30°C) 20.7

Temperature variation effects acid productivity, not final concentration A. pasteurianus tolerates lower temperature than A. aceti. Aeration in fermentor allows better productivity with the expense of substrate loss.

Temperature variation effects acid productivity, not final concentration

A. pasteurianus tolerates lower temperature than A. aceti.

Aeration in fermentor allows better productivity with the expense of substrate loss.

The Office of the Cane and Sugar Board Department of Biotechnology, KKU

The Office of the Cane and Sugar Board

Department of Biotechnology, KKU



M. Boonmee , S. Intarapanich, O. Cotano Department of Biotechnology Faculty of Technology, Khon Kaen University

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