CONTRIBUTION OF ENDOCELLULAR GLUCOSE-OXIDASE AND EXOCELLULAR GLUCOSE-OXIDASE TO GLUCONIC ACID PRODUCTION AT INCREASED DISSOLVED-OXYGEN CONCENTRATIONS
Traeger, M; Qazi, GN; Onken, U; Chopra, CL
| HERO ID | 4942280 |
|---|---|
| In Press | No |
| Year | 1991 |
| Title | CONTRIBUTION OF ENDOCELLULAR GLUCOSE-OXIDASE AND EXOCELLULAR GLUCOSE-OXIDASE TO GLUCONIC ACID PRODUCTION AT INCREASED DISSOLVED-OXYGEN CONCENTRATIONS |
| Authors | Traeger, M; Qazi, GN; Onken, U; Chopra, CL |
| Journal | Journal of Chemical Technology and Biotechnology |
| Volume | 50 |
| Issue | 1 |
| Page Numbers | 1-11 |
| Abstract | For gluconic acid fermentation with Aspergillus niger oxygen-enriched air was used to increase dissolved oxygen concentration during the production phase from c. 30% to 100% saturation related to air at 1 bar. At the highest dissolved oxygen concentration the activity of glucose oxidase increased more than three-fold. At the same time, the gluconic acid production rate increased by a factor of two. During the fermentations, glucose oxidase was present endocellularly as well as exocellularly; the presence of this enzyme in the broth was due to a controlled secretion. It was found that the two fractions of the enzyme showed different activities in their contribution to overall acid production. |
| Wosid | WOS:A1991EJ07700001 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | fermentation |