Concentrated Acid Impregnation, Hydrolysis, and Fermentation of Reed to Ethanol

Moon, Hee Cheon; Song, I. S.; Kim, D. H.

doi:10.1080/15435075.2010.515190

Cited by 13 publications

(4 citation statements)

References 15 publications

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“…Under the multiple carbon source condition, the utilization of carbon source likely occurs one after another in the order of simple to complex one. Moreover, the easy-to-metabolize carbon source has an inhibitory effect on the difficult ones, which is known as Crabtree effect (Ibsen 1961;Moon, Song, and Kim 2010). Meanwhile, due to the inhibitors (mainly xylose and ethanol), the consumption of TRS was lower than the sum of glucose and xylose consumption.…”

Section: Sugar Consumptionmentioning

confidence: 97%

The Efficient Conversion of Paper Sludge to Ethanol by Simultaneous Saccharification and Cofermentation Using Co-Culture

Chen

Zhan

Koopman

et al. 2014

International Journal of Green Energy

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Simultaneous saccharification and cofermentation (SSCF) experiments were conducted to optimize the conversion of paper sludge to ethanol using co-culture of Saccharomyces cerevisiae and Escherichia coli KO11. The fermentation parameters were optimized at 5 wt.% substrate via orthogonal experiments: 25 FPU/g cellulase, 38 • C, 6 wt.% inoculums, and 1:1 S. cerevisiae/E. coli KO11. The ethanol conversion efficiency of co-culture was higher than that of single culture of S. cerevisiae or E. coli KO11 in 72 h fermentation. The maximum ethanol yield achieved by co-culture was 5.69 g/L, which corresponds to a theoretical conversion rate of 63.06 wt.%. The consumption of total reducing sugars reached 90.8%, with higher glucose utilization relative to xylose.

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Section: Sugar Consumptionmentioning

confidence: 97%

The Efficient Conversion of Paper Sludge to Ethanol by Simultaneous Saccharification and Cofermentation Using Co-Culture

Chen

Zhan

Koopman

et al. 2014

International Journal of Green Energy

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“…The autoclave contributed to the hydrolysis duration by heating slowly to 105 • C. Therefore, a relatively shorter residence time of 10 min at 105 • C than the 30 min with 80% acid reported [8] was reasonable. As a result of the acidity and the high temperatures, inhibitors were primarily increased [36,37]. However, longer times were reported, such as 90% glucan from reeds in 2 h [36].…”

Section: Total Sugar Recoverymentioning

confidence: 99%

“…As a result of the acidity and the high temperatures, inhibitors were primarily increased [36,37]. However, longer times were reported, such as 90% glucan from reeds in 2 h [36]. An RSM optimization for wastepaper found an optimum time of 3.6 h and an acidity of 71% for a predicted value of 94% Glu [37].…”

Section: Total Sugar Recoverymentioning

confidence: 99%

Screening the Lipid Production Potential of Oleaginous Yeast Yarrowia lipolytica under Wood Hydrolysates

2023

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Since Yarrowia lipolytica, an oily yeast, contains many valuable products as biomass, to increase its widespread use, it is very important to develop a sustainable production model. In this study, the production of high acid hydrolysate from sawdust biomass, which is produced in very high amounts in our environment, and the effect of these products on the growth efficiency of Yarrowia lipolytica were investigated. A preliminary statistical analysis was carried out to assess sugar production from sawdust by hydrolysis, which estimated 85% of total sugar recovery (TSR) using 96 g of sawdust, while TSR at the highest sawdust was as high as 79%. There was a higher loss in the recovery of C5 sugars with acid and time. This study revealed that Y. lipolytica could grow with high biomass yields in varying hydrolysate concentrations, approaching yields achieved in synthetic glucose media. The maximum biomass obtained was 13 and 26 g in batch and airlift operations, respectively, using organic nutrients. Biomass and lipid yields from kinetic modeling provided a close approximation to the experimental yields performed on an airlift reactor. It was found that Y. lipolytica biomass cultivated on sawdust hydrolysates had significant lipid and protein compositions, as high as 29 and 38%, respectively.

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“…Reforming the traditional fermentation industries into practical biorefineries is crucial to replace the current petrochemical processing for the production of fuels, chemicals, and related products (Koutinas et al 2007). Cereals and crops (corn, sugar cane, sugar beets, and wheat) are the most common raw materials used in biorefineries (Moon, Song, and Kim 2010). Although commercially not yet available, cellulosic biomass such as forestry residuals, urban, and food wastes are also planned to be used as raw material in the biorefineries (Demirbas 2004;Moon and Song 2011).…”

Section: Introductionmentioning

confidence: 99%

Solid-State Fermentation of Wheat Pieces byAspergillus oryzae: Effects of Microwave Pretreatment on Enzyme Production in a Biorefinery

Melikoğlu

2012

International Journal of Green Energy

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Production of hydrolytic enzymes is crucial to operate successful cereal-based biorefineries, where macromolecules in cereals (such as starch, protein, and phosphorus), are converted into their monomers (glucose, free amino nitrogen, and free phosphorous, respectively) for the production of different value-added products. In this study, effects of microwave pretreatment on enzyme production during solid-state fermentations of wheat pieces by Aspergillus oryzae were studied. Results showed that microwave pretreatment for a duration of 30 seconds increased glucoamylase and protease activities from 20 and 143 U/g (db, dry basis), in the control experiment, to 32 and 179 U/g (db), respectively.

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Concentrated Acid Impregnation, Hydrolysis, and Fermentation of Reed to Ethanol

Cited by 13 publications

References 15 publications

The Efficient Conversion of Paper Sludge to Ethanol by Simultaneous Saccharification and Cofermentation Using Co-Culture

The Efficient Conversion of Paper Sludge to Ethanol by Simultaneous Saccharification and Cofermentation Using Co-Culture

Screening the Lipid Production Potential of Oleaginous Yeast Yarrowia lipolytica under Wood Hydrolysates

Solid-State Fermentation of Wheat Pieces byAspergillus oryzae: Effects of Microwave Pretreatment on Enzyme Production in a Biorefinery

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