Effect of propionic acid on citric acid fermentation in an integrated citric acid–methane fermentation process

2015 ◽  
Vol 39 (3) ◽  
pp. 391-400 ◽  
Author(s):  
Jian Xu ◽  
Jia-Wei Bao ◽  
Xian-Feng Su ◽  
Hong-Jian Zhang ◽  
Xin Zeng ◽  
...  
Keyword(s):  
Citric Acid ◽  
Propionic Acid ◽  
Fermentation Process ◽  
Acid Fermentation ◽  
Methane Fermentation ◽  
Citric Acid Fermentation

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

2014 ◽  
Vol 174 (1) ◽  
pp. 376-387 ◽  
Author(s):  
Jian Xu ◽  
Yang-Qiu Chen ◽  
Hong-Jian Zhang ◽  
Lei Tang ◽  
Ke Wang ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Citric Acid ◽  
Fermentation Process ◽  
Acid Fermentation ◽  
Methane Fermentation ◽  
Citric Acid Fermentation

scholarly journals Fate and Role of Ammonium Ions during Fermentation of Citric Acid by Aspergillus niger

2005 ◽  
Vol 71 (11) ◽  
pp. 7178-7186 ◽  
Author(s):  
Maria Papagianni ◽  
Frank Wayman ◽  
Michael Mattey
Keyword(s):  
Citric Acid ◽  
Aspergillus Niger ◽  
Fermentation Process ◽  
Nitrogen Compound ◽  
Ammonium Ion ◽  
Growth Enhancement ◽  
Ammonium Ions ◽  
Acid Fermentation ◽  
Citric Acid Fermentation ◽  
Early Stages

ABSTRACT Stoichiometric modeling of the early stages of the citric acid fermentation process by Aspergillus niger revealed that ammonium ions combine with a carbon-containing metabolite inside the cell, in a ratio 1:1, to form a nitrogen compound which is then excreted by the mycelium. High-performance liquid chromatography analysis identified glucosamine as the product of the relationship between glucose and ammonium during the early stages of the citric acid fermentation process. Slightly acidic internal pHs, extremely low ammonium ion concentrations inside the cell, and glucosamine synthesis come into direct contradiction with the earlier theory of the ammonium pool inside the cell, regarded as responsible for inhibition of the enzyme phosphofructokinase. At later fermentation stages, when the mycelium is involved in a process of fragmentation and regrowth, the addition of ammonium sulfate leads to a series of events: the formation and secretion of glucosamine in elevated amounts, the short inhibition of citrate synthesis, growth enhancement, the utilization of glucosamine, and finally, the enhancement of citric acid production rates. Obviously, the enzymatic processes underlining the phenomena need to be reexamined. As a by-product of the citric acid fermentation, glucosamine is reported for the first time here. Suitable process manipulations of the system described in this work could lead to successful glucosamine recovery at the point of its highest yield before degradation by the fungus occurs.

The use of deionised date syrup as a substrate for citric acid fermentation

1979 ◽  
Vol 1 (4) ◽  
pp. 153-158 ◽  
Author(s):  
Z. Al-Obaidi ◽  
D. R. Berry
Keyword(s):  
Citric Acid ◽  
Acid Fermentation ◽  
Citric Acid Fermentation ◽  
Date Syrup

Citric Acid Fermentation by Aspergillus niger NG-110 in Shake Flask

2003 ◽  
Vol 3 (3) ◽  
pp. 360-370 ◽  
Author(s):  
Rubina Mazhar ◽  
Sikander Ali . ◽  
Ikram-ul-haq . ◽  
Abdul Waheed .
Keyword(s):  
Citric Acid ◽  
Aspergillus Niger ◽  
Shake Flask ◽  
Acid Fermentation ◽  
Citric Acid Fermentation

The Chemistry of the Citric Acid Fermentation. I. The Carbon Balance

1936 ◽  
Vol 58 (4) ◽  
pp. 555-558 ◽  
Author(s):  
P. A. Wells ◽  
A. J. Moyer ◽  
O. E. May
Keyword(s):  
Citric Acid ◽  
Carbon Balance ◽  
Acid Fermentation ◽  
Citric Acid Fermentation
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