The combined effect on initial glucose concentration and pH control strategies for acetone-butanol-ethanol (ABE) fermentation by Clostridium acetobutylicum DSM 792

2020 ◽  
pp. 107910
Author(s):  
M. Capilla ◽  
P. San-Valero ◽  
M. Izquierdo ◽  
J.M Penya-roja ◽  
C. Gabaldón
Keyword(s):  
Glucose Concentration ◽  
Clostridium Acetobutylicum ◽  
Control Strategies ◽  
Ph Control ◽  
Abe Fermentation ◽  
Combined Effect ◽  
Initial Glucose Concentration ◽  
Acetone Butanol Ethanol

Monitoring Initial Glucose Concentration for Optimum pH Control during Fermentation of Microbial Cellulose in Rotary Discs Reactor

2013 ◽  
Vol 594-595 ◽  
pp. 319-324 ◽  
Author(s):  
Khairul Azly Zahan ◽  
Norhayati Pa’e ◽  
Kok Fook Seng ◽  
Ida Idayu Muhamad
Keyword(s):  
Glucose Concentration ◽  
Ph Control ◽  
Fermentation Medium ◽  
Initial Glucose Concentration ◽  
Cellulose Production ◽  
Microbial Cellulose ◽  
Cellulose Yield ◽  
Optimum Ph ◽  
Initial Ph ◽  
Wet Weight

The study aimed to investigate the effect of initial glucose concentration on the microbial cellulose production using Acetobacter xylinum in a Rotary Discs Reactor (RDR-2 liter volume). The fermentations were carried out for four days at temperature 28°C, initial pH 6.5, and 9 rpm of rotation speed; meanwhile, the initial glucose concentration was manipulated in the range of 0.5-5.0 % (w/v). The cell growth was stimulated using 1.4% (v/v) ethanol in the fermentation medium. The result indicated that 1% (w/v) of initial glucose concentration provided the highest microbial cellulose yield with total wet weight of 296.1657g/l. The increase of initial glucose concentration resulted to the decrease of microbial cellulose yield and greater pH drop after fermentation. It can be conclude that production of microbial cellulose using RDR could produce relatively much higher microbial cellulose with less amounts of glucose in a shorter fermentation period compared to static fermentation due to more efficient oxygen uptake during rotary movements and homogenous environment for microbial growth.

scholarly journals Effect of lignocellulose-derived weak acids on butanol production byClostridium acetobutylicumunder different pH adjustment conditions

RSC Advances ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 1967-1975 ◽  
Author(s):  
Jianhui Wang ◽  
Hongyan Yang ◽  
Gaoxaing Qi ◽  
Xuecheng Liu ◽  
Xu Gao ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Formic Acid ◽  
Clostridium Acetobutylicum ◽  
Levulinic Acid ◽  
Abe Fermentation ◽  
Butanol Production ◽  
Weak Acids ◽  
Ph Adjustment ◽  
Acetone Butanol Ethanol

The effects of formic acid, acetic acid and levulinic acid on acetone–butanol–ethanol (ABE) fermentation under different pH adjustment conditions were investigated usingClostridium acetobutylicumas the fermentation strain.

Energy-efficient butanol production by Clostridium acetobutylicum with histidine kinase knockouts to improve strain tolerance and process robustness

2021 ◽  
Author(s):  
Guangqing Du ◽  
Chao Zhu ◽  
Mengmeng Xu ◽  
Lan Wang ◽  
Shang-Tian Yang ◽  
...  
Keyword(s):  
Histidine Kinase ◽  
Energy Efficient ◽  
Clostridium Acetobutylicum ◽  
Abe Fermentation ◽  
Butanol Production ◽  
Process Robustness ◽  
Strain Tolerance ◽  
Acetone Butanol Ethanol

Under stress, Clostridium acetobutylicum sporulates and halts its metabolism, which limits its use in industrial acetone-butanol-ethanol (ABE) fermentation. It is challenging to manipulate the highly regulated sporulation program used by...

Sign in / Sign up

Export Citation Format

Share Document