کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
3394955 | 1592829 | 2015 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Butanol production from hexoses and pentoses by fermentation of Clostridium acetobutylicum Butanol production from hexoses and pentoses by fermentation of Clostridium acetobutylicum](/preview/png/3394955.png)
• Process was characterized using lignocellulose-hydrolysate representative sugars.
• Batch fermentations of single sugars and of mixtures of sugars were performed.
• The synthetic medium was optimized in the concentration of each nutritional factor.
• The synergic effect of the four sugars produced a high butanol concentration.
The present paper reports the characterization of ABE (acetone-butanol-ethanol) production by Clostridium acetobutylicum DSM 792 for sugars representative of hydrolysed lignocellulosic biomass (glucose, mannose, arabinose, xylose). The attention was focused on: the selection of an optimal medium for the simultaneous conversion of the investigated sugars; the assessment of interference-synergistic effects during the fermentation of mixtures of the investigated sugars.The synthetic medium was optimised in terms of nutritional factors: the KH2PO4–K2HPO4 concentration was increased up to 5 g/L; the MgSO4 concentration was increased up to 2 g/L; the MnSO4 concentration was increased up to 0.1 g/L; the FeSO4 concentration ranged between 0.002 and 0.01 g/L); the CaCO3 concentration was increased up to 10 g/L. The optimal concentration of the investigated factors was assessed and it varied from one sugar to another.The batch fermentations of a mixture of the four sugars highlighted their synergistic effects. Once set the initial concentration of the sugars (60 g/L), the butanol and solvent concentration increased up to 14.6 and 20.6 g/L, respectively, when the four sugars were present.
Journal: Anaerobe - Volume 34, August 2015, Pages 146–155