Results 161 to 170 of about 3,232 (197)
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Glucose-stimulated acidogenesis by Streptomyces peucetius
Canadian Journal of Microbiology, 1987Cultures of Streptomyces peucetius often were observed to divert spontaneously from the production of anthracycline antibiotics to the excretion of acidic metabolites, whether grown in a defined medium or a nutrient-rich medium. The predominant excreted acidic metabolites were determined by high-performance liquid chromatography to be pyruvate and 2 ...
M L, Dekleva, W R, Strohl
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Enhancement of sludge granulation in hydrolytic acidogenesis by denitrification
Applied Microbiology and Biotechnology, 2015Acidogenesis is an important pretreatment process for various industrial wastewater treatments. Granular sludge is an efficient form of a microbial community in anaerobic methanogenic reactors, such as upflow anaerobic sludge blanket (UASB), but it is hard to develop in the acidogenic process due to the short hydraulic retention times (HRTs) of ...
Yang, Li +5 more
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Acidogenesis by Oral Streptococci at Different pH Values
Caries Research, 2009Streptococcus mutans is known to be one of the most cariogenic oral microorganisms. Recently, organisms classified as S. mutans have been shown to be genotypically heterogeneous and to form at least six separate species. In this study, differences in acid production between the mutans streptococci and Streptococcus sanguis were investigated at pH ...
J J, de Soet, F A, Toors, J, de Graaff
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Acidogenesis of Cellulosic Hydrolysates for New Generation Biofuels
Biomass and Bioenergy, 2016Abstract This article presents a comprehensive review on hydrolysis and acidogenesis of lignocellulosic waste biomass and makes clear new perspectives in biofuel research. Specifically, the acidogenesis of lignocellulosics and liquid effluent have been discussed extensively with potential goal the production of a new generation biofuel.
Agapi Dima +2 more
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Characterisation of high-rate anaerobic acidogenesis [PDF]
, 2020 Detailed in-depth knowledge of acidogenesis is important for the development of robust and optimised anaerobic digestion processes, and also to selectively produce certain acids or other by-products such as hydrogen during the conversions. Although the complete anaerobic digestion process has been studied for a long time, the detailed understanding of ...
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Acidogenesis in the two‐phase anaerobic process
Journal of Environmental Science and Health . Part A: Environmental Science and Engineering, 1985Abstract A two‐phase anaerobic digestion system with a completely mixed acid reactor was studied using a 2 percent synthetic glucose substrate. The steady‐state performance of the acid phase was studied at pH 4.3 and a hydraulic retention time (HRT) of 4.5 hours for 117 days.
Dipak Roy, Lynn M. Jones
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Acidogenesis in relation to fluoride resistance of Streptococcus mutans
Oral Microbiology and Immunology, 1991The velocity of acid production (Vap) of Streptococcus mutans C180‐2 and of 2 fluoride‐resistant mutant strains S. mutans C180‐2FR and S. mutans C180‐2MFR was examined in vitro at pH values between 7.0 and 4.5. The Vap of the fluoride‐resistant mutants was lower than the Vap of the parent strain at pH ≥6.0.
C, Van Loveren +4 more
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Continuous lactose fermentation by Clostridium acetobutylicum – Assessment of acidogenesis kinetics
Bioresource Technology, 2011An assessment of the growth kinetics of acidogenic cells of Clostridium acetobutylicum DSM 792 is reported in the paper. Tests were carried out in a continuous stirred tank reactor under controlled conditions adopting a complex medium supplemented with lactose as carbon source to mimic cheese whey.
NAPOLI, FABIO +4 more
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Anaerobic fermentation of whey : acidogenesis
2010Based on the initial exploratory results of single-phase (acidogenesis and methanogenesis takes place in one vessel) whey biomethanation studies, a two-phase (acidogenesis and methanogenesis takes place in two separated serial vessels) biomethanation process was found to be more suitable for dealing with the current whey utilisation and/or disposal ...
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Maximization of acetic acid production in partial acidogenesis of swine wastewater
Biotechnology and Bioengineering, 2001AbstractSwine wastewater was biologically treated to produce short‐chain volatile organic acids (VOAs) in laboratory‐scale continuously stirred tank reactors. The maximum production rates of acetic and butyric acids associated with simultaneous changes in pH and hydraulic retention time (HRT) were investigated, in which the degree of acidification of ...
Hwang, S, Lee, Y, Yang, KY
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