Effects of fermentation substrate conditions on corn–soy co-fermentation for fuel ethanol production

Yao, Linxing; Lee, Show-Ling; Wang, Tong; Moura, J. M. L. N. de; Johnson, Lawrence A.

doi:10.1016/j.biortech.2012.04.071

Cited by 17 publications

(15 citation statements)

References 20 publications

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“…compared to those reported for whole beers from [corn only] fermentation(Yao et al, 2012). A 3.6% increase in lysine was observed when skim was added to the [corn + UIF] slurry; While whole beers from the [corn + skim] and [corn + UIF] had comparable total amino acid…”

supporting

confidence: 50%

“…The addition of soy skim and UIF mixture in corn fermentation (skim-to-UIF ratio 6.5:1; corn-to-UIF ratio 1:0.16) significantly increased ethanol yield (44.8 ± 1.8 g/100 g dry corn) and ethanol production rate Table 1 Effects of adding EAEP soy skim and UIF in dry-grind corn fermentation on ethanol production. Lemuz et al (2009) andYao et al (2012) reported increased ethanol yield with increased water-to-solids ratio, possibly due to a decrease in viscosity and hence better mixing. Therefore, the addition of soy skim and UIF (skim-to-UIF ratio 6.5:1; corn-to-UIF ratio 1:0.16) to corn fermentation should significantly reduce operating costs by reducing fermentation time.…”

Section: Soy Skim and Uif Were Kept Together And Added In Dry-grind Cmentioning

confidence: 95%

“…In the corn and TIF slurry, the corn-to-TIF ratio was 1:0, 1:0.04, 1:0.08 and 1:0.16 db (1:0, 1:0.2, 1:0.3, 1:0.5 and 1:1 as-is weight basis). The ratios of water-to-corn and water-to-solids in the fermentation slurry were maintained at 2.5:1 and 2.4:1, respectively (Yao et al, 2012). The amount of corn (58.11 g db) was kept constant in all fermentations and the amount of TIF and water varied accordingly.…”

Section: Determining If Separate Pre-treatment Of Eaep Uif Is Requirementioning

confidence: 99%

“…Soy skim has been found to be an effective nutrient source which can increase fermentation rate and to increase final protein content of finished beer in dry-grind corn fermentation (Yao et al, 2011(Yao et al, , 2012. IF has been demonstrated to be a potential lignocellulosic feedstock for ethanol production (Karki et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of co-products of enzyme-assisted aqueous extraction of soybeans on ethanol production in dry-grind corn fermentation

Sekhon

Jung

Wang

et al. 2015

Bioresource Technology

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supporting

confidence: 50%

Section: Soy Skim and Uif Were Kept Together And Added In Dry-grind Cmentioning

confidence: 95%

Section: Determining If Separate Pre-treatment Of Eaep Uif Is Requirementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of co-products of enzyme-assisted aqueous extraction of soybeans on ethanol production in dry-grind corn fermentation

Sekhon

Jung

Wang

et al. 2015

Bioresource Technology

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“…Nitric acid was added to adjust pH to 5 -5.3. The mixture was then supplemented with 7 mL α-amylase (Termamyl EC 3.2.1.1, Novozymes DE), and incubated at 85 °C (9). The process of liquefaction lasted for 120 minutes.…”

Section: Enzymatic Saccharificationmentioning

confidence: 99%

Study of Wastewaters Contaminated with Heavy Metals in Bioethanol Production

Bartošová

Blinová

2017

Research Papers Faculty of Materials Science and Technology Slovak University of Technology

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Nutrient Enhancement of Corn Distillers Dried Grains by Addition of Coproducts of the Enzyme‐Assisted Aqueous Extraction Process of Soybeans in Corn Fermentation

Sekhon

Rosentrater

Jung

et al. 2019

J Americ Oil Chem Soc

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Corn distillers dried grains with solubles (DDGS) are not nutritionally complete as a nonruminant ingredient owing to poor essential amino acid profile, and high fat and fiber contents. Coproducts of soybean enzymeassisted aqueous extraction process, skim (wastewater) and insoluble fiber (IF; solid residue), and/or enzymes (pectinase, cellulase, and acid protease; referred to as PCF) were evaluated as distillers dried grains (DDG) nutritional quality enhancers in corn fermentation. Corn-soy DDG had~10% higher protein,~3% lower fat, and~2% lower fiber contents compared to corn DDG; fiber content was further reduced with PCF treatment (~4% total decrease). Concentrations of all essential amino acids in corn-soy DDG showed at least a threefold increase, except for allo-isoleucine and tryptophan, compared to corn DDG. Corn-soy DDG had~25% decrease in total fatty acid (TFA) and~6% decrease in free fatty acid (FFA) contents compared to corn DDG; TFA and FFA contents further decreased with PCF treatment. Corn-soy DDG had~15%, 3%, and 1.7% lower hemicellulose, cellulose, and lignin contents, respectively, compared to corn DDG; hemicellulose content further decreased with PCF treatment. Mineral composition of corn-soy DDG was in the recommended range, except Na and S were out of range by 0.79% and 0.74%, respectively. All results, except for Na and S, suggest strong potential of using skim and IF as DDG nutritional quality enhancers.

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Effects of fermentation substrate conditions on corn–soy co-fermentation for fuel ethanol production

Cited by 17 publications

References 20 publications

Effect of co-products of enzyme-assisted aqueous extraction of soybeans on ethanol production in dry-grind corn fermentation

Effect of co-products of enzyme-assisted aqueous extraction of soybeans on ethanol production in dry-grind corn fermentation

Study of Wastewaters Contaminated with Heavy Metals in Bioethanol Production

Nutrient Enhancement of Corn Distillers Dried Grains by Addition of Coproducts of the Enzyme‐Assisted Aqueous Extraction Process of Soybeans in Corn Fermentation

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