Butyl Alcohol Fermentation of Wood Sugar

Sjolander, Newell O.; Langlykke, A. F.; Peterson, W. H.

doi:10.1021/ie50347a011

Cited by 45 publications

(15 citation statements)

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“…in complex medium (Collingsworth and Reid, 1935;Leonard and Hajny, 1945;Reid and Baldwin, 1934;Sjolander et al, 1938). Studies in our laboratory with ethanologenic Escherichia coli strain KO11 confirmed the benefit of sulfur compounds for hemicellulose hydrolysates of Pinus sp.…”

Section: Introductionmentioning

confidence: 60%

Effect of reduced sulfur compounds on the fermentation of phosphoric acid pretreated sugarcane bagasse by ethanologenic Escherichia coli

Nieves

Geddes

Miller

et al. 2011

Bioresource Technology

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Section: Introductionmentioning

confidence: 60%

Effect of reduced sulfur compounds on the fermentation of phosphoric acid pretreated sugarcane bagasse by ethanologenic Escherichia coli

Nieves

Geddes

Miller

et al. 2011

Bioresource Technology

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“…The pH of the acidic hydrolysates must be raised to the appropriate level for the fermentation organism. It has been known for almost 70 years that adjustment of the hydrolysate to a basic pH, followed by reacidification to achieve optimal fermentation pH can have significant detoxification effects (Sjolander et al 1938). When Ca(OH) 2 is used in this manner, the method is known as overliming; it is relatively cheap and effective, but it results in the formation of insoluble gypsum when the acid used for pretreatment is H 2 SO 4 .…”

Section: Chemical Conditioningmentioning

confidence: 99%

Role of pretreatment and conditioning processes on toxicity of lignocellulosic biomass hydrolysates

2009

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The Department of Energy's Office of the Biomass Program has set goals of making ethanol cost competitive by 2012 and replacing 30% of 2004 transportation supply with biofuels by 2030. Both goals require improvements in conversions of cellulosic biomass to sugars as well as improvements in fermentation rates and yields. Current best pretreatment processes are reasonably efficient at making the cellulose/hemicellulose/lignin matrix amenable to enzymatic hydrolysis and fermentation, but they release a number of toxic compounds into the hydrolysate which inhibit the growth and ethanol productivity of fermentation organisms. Conditioning methods designed to reduce the toxicity of hydrolysates are effective, but add to process costs and tend to reduce sugar yields, thus adding significantly to the final cost of production. Reducing the cost of cellulosic ethanol production will likely require enhanced understanding of the source and mode of action of hydrolysate toxic compounds, the means by which some organisms resist the actions of these compounds, and the methodology and mechanisms for conditioning hydrolysate to reduce toxicity. This review will provide an update on the state of knowledge in these areas and can provide insights useful for the crafting of hypotheses for improvements in pretreatment, conditioning, and fermentation organisms.

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“…Over 50 years ago, Sjolander et al (1938), Leonard and Hajny (1945), and Perlman (1944) reported that the toxicity of acid hydrolysates of lignocellulose could be mitigated by the addition of Ca(OH) 2 ("overliming"). The resulting sugar syrup, containing gypsum and other residues, was fermentable by yeast and bacteria.…”

Section: Introductionmentioning

confidence: 99%

Effects of Ca(OH)2 treatments (“overliming”) on the composition and toxicity of bagasse hemicellulose hydrolysates

Martı́nez

Rodríguez

York

et al. 2000

Biotechnol. Bioeng.

272

132

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Butyl Alcohol Fermentation of Wood Sugar

Cited by 45 publications

References 0 publications

Effect of reduced sulfur compounds on the fermentation of phosphoric acid pretreated sugarcane bagasse by ethanologenic Escherichia coli

Effect of reduced sulfur compounds on the fermentation of phosphoric acid pretreated sugarcane bagasse by ethanologenic Escherichia coli

Role of pretreatment and conditioning processes on toxicity of lignocellulosic biomass hydrolysates

Effects of Ca(OH)2 treatments (“overliming”) on the composition and toxicity of bagasse hemicellulose hydrolysates

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