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Integration of Ensiled Corncob to Diluted Molasses as Carbon and Microbial Sources for Ethanol Production.
- Source :
-
Trends in Sciences . Jan2024, Vol. 21 Issue 1, p1-11. 11p. - Publication Year :
- 2024
-
Abstract
- To improve ethanol production, carbon and microbial sources were derived from corncob and molasses. Before investigating simultaneous saccharification and fermentation (SSF), the boiled corncob was vacuum-ensiled and the molasses was diluted. The optimal ensiling time of 4 days increased not only the amount of fermentable sugar but also the population of beneficial microorganisms. The proper dilution of molasses at a ratio of 1:3 molasses to boiled water reduced both the contamination problem and the inhibition of ethanol fermentation. The combination of the ensiled corncob and the diluted molasses could provide a substrate that is suitable for SSF without the addition of enzymes, supplements, or yeast strains. The substrate contained the optimal concentration of initial sugar (174.631 ± 0.975 g/L) and viable microorganisms (1.9×106 ± 0.1×106 CFU/mL of total bacteria and 1.0x105 ± 0.1×105CFU/mL of yeast) that could continue to hydrolyze and ferment carbohydrates in the substrate for the SSF. Using a ratio of 1:3 of ensiled corncob to diluted molasses, a pH of 4.5, and a temperature of 27 °C for 72 h, the SSF produced the highest concentration of ethanol at 93.345 ± 0.062 g/L. This work provides a cost-effective process that requires no enzyme or yeast, is simply technology, and is friendly to the environment, while the remaining solid fraction can be utilized as a suitable feedstock for biogas production. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 27740226
- Volume :
- 21
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Trends in Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 174435619
- Full Text :
- https://doi.org/10.48048/tis.2023.7015