Results 251 to 260 of about 2,889,328 (295)

Degradation of Acetic and Propionic Acids in the Methane Fermentation

Water Research, 1991
Abstract A series of batch digestion experiments was performed to evaluate the effect of elevated acetic acid concentrations on the degradation of propionic acid and vice versa. Flask digesters were incubated at 37°C with acetic and propionic acids added at up to 2000 and 1500 mg 1 −1 , respectively.
R L Earle
exaly   +2 more sources

Acetobacter pasteurianus Metabolic Change Induced by Initial Acetic Acid to Adapt to Acetic Acid Fermentation Conditions

Applied Microbiology and Biotechnology, 2017
Initial acetic acid can improve the ethanol oxidation rate of acetic acid bacteria for acetic acid fermentation. In this work, Acetobacter pasteurianus was cultured in ethanol-free medium, and energy production was found to increase by 150% through glucose consumption induced by initial acetic acid.
Yu Zheng, Yangang Chang, Renkuan Zhang
exaly   +3 more sources

Fermentation of Xylose into Acetic Acid by Clostridium thermoaceticum

Applied Biochemistry and Biotechnology, 2001
For optimum fermentation, fermenting xylose into acetic acid by Clostridium thermoaceticum (ATCC 49707) requires adaptation of the strain to xylose medium. Exposed to a mixture of glucose and xylose, it preferentially consumes xylose over glucose. The initial concentration of xylose in the medium affects the final concentration and the yield of acetic ...
N, Balasubramanian, J S, Kim, Y Y, Lee
openaire   +2 more sources

Effect of Acetic Acid on Citric Acid Fermentation in an Integrated Citric Acid–Methane Fermentation Process

Applied Biochemistry and Biotechnology, 2014
An integrated citric acid-methane fermentation process was proposed to solve the problem of extraction wastewater in citric acid fermentation process. Extraction wastewater was treated by anaerobic digestion and then recycled for the next batch of citric acid fermentation to eliminate wastewater discharge and reduce water resource consumption.
Jian, Xu, Yang-Qiu, Chen, Hong-Jian, Zhang, Lei, Tang, Ke, Wang, Jian-Hua, Zhang, Xu-Sheng, Chen, Zhong-Gui, Mao   +7 more
openaire   +2 more sources

Hydrogen production by fermentation using acetic acid and lactic acid

Journal of Bioscience and Bioengineering, 2007
Microbial hydrogen production from sho-chu post-distillation slurry solution (slurry solution) containing large amounts of organic acids was investigated. The highest hydrogen producer, Clostridium diolis JPCC H-3, was isolated from natural environment and produced hydrogen at 6.03+/-0.15 ml from 5 ml slurry solution in 30 h.
Mitsufumi, Matsumoto, Yasuhiko, Nishimura   +1 more
openaire   +2 more sources

Aerobic Submerged Fermentation by Acetic Acid Bacteria for Vinegar Production: Process and Biotechnological Aspects [PDF]

Process Biochemistry, 2014
Strictly aerobic acetic acid bacteria (AAB) have a long history of use in fermentation processes, and the conversion of ethanol to acetic acid for the production of vinegar is the most well-known application.
Maria Gullo, Elena Verzelloni
exaly   +2 more sources

Acetic acid formation in escherichia coli fermentation

Biotechnology and Bioengineering, 1992
AbstractAcetic acid formation in Escherichia coli fermentation has been studied in continuous cultures. Experimental results suggest that the limited capacity of the oxidative metabolism (perhaps the limited capacity of TCA cycle) may be responsible for acetic acid formation.
K, Han, H C, Lim, J, Hong
openaire   +2 more sources

Simultaneous Saccharification and Fermentation of Cellulosic Biomass to Acetic Acid

Applied Biochemistry and Biotechnology, 2000
A strain of Clostridium thermoaceticum (ATCC 49707) was evaluated for its homoacetate potential. This thermophilic anaerobe best produces acetate from glucose at pH 6.0 and 59 degrees C with a yield of 83% of theoretical. Enzyme hydrolysis of two substrates, a-cellulose and a pulp mill sludge, yielded 68% and 70% digestion, respectively.
J R, Borden, Y Y, Lee, H H, Yoon
openaire   +2 more sources

Genetic organization ofAcetobacter for acetic acid fermentation

Antonie van Leeuwenhoek, 1994
Plasmid vectors for the acetic acid-producing strains of Acetobacter and Gluconobacter were constructed from their cryptic plasmids and the efficient transformation conditions were established. The systems allowed to reveal the genetic background of the strains used in the acetic acid fermentation.
openaire   +2 more sources

Inhibitory effect of acetic acid on dark-fermentative hydrogen production

Bioresource Technology, 2022
This study examined the working mechanisms of acetic acid inhibition on dark fermentative hydrogen production. It was found that undissociated acetic acid (UAA) concentration was the critical factor in acetic acid inhibition. Hydrogen production activity decreased by 50 % and 90 % when UAA concentrations was 76.3 mg/L (1.27 mmol/L) and 686.7 mg/L (11 ...
Yanan, Yin, Weize, Song, Jianlong, Wang
openaire   +2 more sources