1988
DOI: 10.1007/bf00409717
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Ethanol production from xylose by Thermoanaerobacter ethanolicus in batch and continuous culture

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Cited by 45 publications
(36 citation statements)
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“…At higher concentrations (27.5 g L -1 ) the yields lowered to 0.6 mol EtOH mol xylose -1 . Further studies by using xylose limiting continuous cultures, indicated that EtOH yields were more dependent on length of cultivation than upon growth rate and higher yields were presented (1.43 mol mol xylose -1 ) (Lacis & Lawford, 1988b. Later data from this strain on glucose showed lower EtOH yields and the direction of the carbon flow was towards lactate formation by increasing substrate concentrations (Lacis & Lawford, 1991).…”
Section: Wwwintechopencommentioning
confidence: 96%
See 1 more Smart Citation
“…At higher concentrations (27.5 g L -1 ) the yields lowered to 0.6 mol EtOH mol xylose -1 . Further studies by using xylose limiting continuous cultures, indicated that EtOH yields were more dependent on length of cultivation than upon growth rate and higher yields were presented (1.43 mol mol xylose -1 ) (Lacis & Lawford, 1988b. Later data from this strain on glucose showed lower EtOH yields and the direction of the carbon flow was towards lactate formation by increasing substrate concentrations (Lacis & Lawford, 1991).…”
Section: Wwwintechopencommentioning
confidence: 96%
“…Thermoanerobacter ethanolicus was described in 1981 (Wiegel & Ljungdahl., 1981) showing extremely good yields of ethanol from glucose (1.9 mol EtOH mol glucose -1 ). Later this strain has been extensively studied by Lacis and Lawford (Lacis and Lawford 1988a, 1988b. Early observation was on high EtOH yields on xylose at low substrate (4.0 g L -1 ) concentrations.…”
Section: Wwwintechopencommentioning
confidence: 99%
“…Low sensitivity to initial substrate concentrations has been demonstrated with thermophilic members of various genera including Clostridium (Orlygsson, 2012), Thermoanaerobacterium (Almarsdottir et al 2012), and Thermoanaerobacter (Lacis & Lawford 1988, Sommer et al 2004). The main reason for this is due to the low buffer capacity of batch cultures these experiments have been performed in, end product inhibition (either acids or hydrogen), or substrate inhibition (Lacis & Lawford, 1988). At low initial glucose concentrations (≤30 mM) strain J2 effectively degraded most of the glucose, with ethanol as the primary end product accompanied by smaller concentrations of acetate, butyrate, and hydrogen (Figure 2A).…”
Section: Effect Of Different Initial Glucose Concentrationsmentioning
confidence: 99%
“…Additionally, many thermophiles have broad substrate spectra making them well suited to degrading the monomers present in complex biomass. Strict anaerobes within the genera of Clostridium, Thermoanaerobacter, and Thermoanaerobacterium have been extensively studied for their ethanol production from sugars and biomass (Wiegel et al 1983, Lacis & Lawford, 1988, Lynd et al 1989, Almarsdottir et al 2012) while little attention has been paid to other Firmicutes such as members of the genus Paenibacillus. Few reports on the fermentative metabolism of members of Paenibacillus have been reported despite some strains being able to degrade cellulose and other polymeric substrates (Dasman et al 2002, Daane et al 2002.…”
Section: Introductionmentioning
confidence: 99%
“…Des rendements proches de 90 % du rendement théorique ont été obtenus avec Thermoanaerobacter ethanolicus [153][154][155] (tableau 6), mais à partir d'une faible concentration initiale en xylose. Clostridium thermohydrosulfuricum a été aussi largement étudié en culture continue dans le cadre du procédé DMC (Direct Microbial Conversion).…”
Section: Bactéries Thermophilesunclassified