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The utility of unconventional oxygenation of culture in simultaneousl production of inulinase and invertase by yeasts K. marxianus K-2

100%

Pielecki J., Targonski Z.

Biotechnologia

2003

issue 1

234-243

In this study, the apparatus for continuous controlling of dissolved oxygen concentration in the culture media was used. The automatic dosing of hydrogen peroxide (decomposed to oxygen and water) was possible, and a significant increase of extracellular enzymatic activity of inulinase (2,5-fold) and invertase (1,5-fold) were obtained in comparison with the traditional aeration. It also minimizes contamination, lowers the expenses on power consumption on aeration and mixing, reduces foaming and, consequently, high cost of antifoam emulsion and bacteriological filters.

Utility of unconventional oxygenation of culture in gluconic acid fermentation

88%

Fiedurek J., Pielecki J., Gromada A.

Biotechnologia

1999

issue 4

179-185

A new apparatus for controlling dissolved oxygen concentration in the culture media was tested. Using the apparatus, the automatic dosing of hydrogen peroxide (decomposed by catalase to oxygen and water) was possible, and a significant increase of dissolved oxygen, gluconic acid (3-fold) and over 5-fold intracellular catalase activity were obtained in comparison with the traditional aeration. It also minimises contamination, lowers the expenses on power consumption of aeration, reduces foaming and, consequently, high cost of antifoam emulsion and bacteriological filters.

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2 Biotechnologia

1 2003

1 1999

2 Pielecki J.

1 Fiedurek J.

1 Gromada A.

1 Targonski Z.

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The utility of unconventional oxygenation of culture in simultaneousl production of inulinase and invertase by yeasts K. marxianus K-2

Utility of unconventional oxygenation of culture in gluconic acid fermentation