Continuous acidogenesis of sucrose, raffinose and vinasse using mineral kissiris as promoter

Bioresource Technology
Katerina LappaA A Koutinas

Abstract

The use of kissiris as promoter (culture immobilization carrier) in anaerobic acidogenesis of sucrose, raffinose and vinasse is reported. Initially, the effect of pH (4-8) and fermentation temperature (18-52 °C) on the accumulation of low molecular weight organic acids (OAs) during sucrose acidogenesis, was evaluated. The promoting effect of kissiris was confirmed compared to free cells, resulting in 80% increased OAs production. The optimum conditions (pH 8; 37 °C) were used during acidogenesis of sucrose/raffinose mixtures. A continuous system was also operated for more than 2 months. When sucrose and sucrose/raffinose mixtures were used, lactic acid type fermentation prevailed, while when vinasse was used, butyric acid type fermentation occurred. Total OAs concentrations were more than 14 g/L and ethanol concentrations were 0.5-1 mL/L. Culture adaptation in vinasse was necessary to avoid poor results. The proposed process is promising for new generation ester-based biofuel production from industrial wastes.

References

May 28, 2005·Applied Biochemistry and Biotechnology·Tim Eggeman, Dan Verser
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Jan 8, 2011·Journal of Molecular Microbiology and Biotechnology·Christina GrimmlerArmin Ehrenreich
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Nov 22, 2012·Biotechnology for Biofuels·Elda I España-GamboaLiliana M Alzate-Gaviria
Feb 6, 2013·World Journal of Microbiology & Biotechnology·Yan LiXiaodong Zhang
Feb 13, 2013·Bioresource Technology·Kostas SyngiridisAthanasios A Koutinas

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Citations

Oct 23, 2015·Bioresource Technology·Athanasios KoutinasEmmanuel M Papamichael
Aug 26, 2016·Bioresource Technology·Argyro BekatorouAthanasios A Koutinas

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