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| Content Provider | Springer Nature Link |
|---|---|
| Author | Musatti, Alida Rollini, Manuela Sambusiti, Cecilia Manzoni, Matilde |
| Copyright Year | 2014 |
| Abstract | Zymomonas mobilis ferments only glucose, fructose and sucrose via the Entner-Doudoroff pathway, providing an equimolar mixture of ethanol and CO$_{2}$ and theoretically, as for Saccharomyces cerevisiae, the gas evolved can be used to leaven a dough. However, the capability of Z. mobilis to produce CO$_{2}$ has rarely been exploited. In the present study we first evaluated the growing performance of two Z. mobilis strains (DSMZ 424 and 3580) in a culture medium lacking yeast extract, with added glucose or fructose (20 and 50 g/L) comparatively; the results demonstrated that biomass yield is 50 % higher with glucose. The best conditions were up-scaled, obtaining a biomass yield of 1.3–1.4 g dcw/L in a 14-L fermenter. Leavening trials performed in a model system with the biomass collected from fermenters after 9 or 16 h incubation evidenced that Z. mobilis can leaven a model dough as S. cerevisiae does, and showing a CO$_{2}$ production rate (9–11 mL g dcw$^{−1}$ min$^{−1}$) statistically higher than that of S. cerevisiae (6–7 mL g dcw$^{−1}$ min$^{−1}$), especially when using 9-h-grown biomass. Bakery products leavened with Z. mobilis could thus be available to people with adverse responses to the ingestion of bakery food, providing innovation in the area of yeast-free leavened baked goods. |
| Starting Page | 1583 |
| Ending Page | 1589 |
| Page Count | 7 |
| File Format | |
| ISSN | 15904261 |
| Journal | Annals of Microbiology |
| Volume Number | 65 |
| Issue Number | 3 |
| e-ISSN | 18692044 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2014-11-14 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | Subscribed |
| Subject Keyword | Zymomonas mobilis Leavening performance Dough-model system CO$_{2}$ production rate Yeast intolerance Yeast-free products Microbiology Microbial Genetics and Genomics Microbial Ecology Mycology Medical Microbiology Applied Microbiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Microbiology and Biotechnology |
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