Acid-Base equilibrium in aerobic fermentations: Influence of unutilizable acids and bases on the acetic acid concentration in culture liquid

1973 ◽  
Vol 15 (6) ◽  
pp. 1147-1158 ◽  
Author(s):  
Shigeho Ikeda ◽  
Ayaaki Ishizaki ◽  
Yoshio Hirose
Keyword(s):  
Acetic Acid ◽  
Acid Concentration ◽  
Culture Liquid ◽  
Acetic Acid Concentration ◽  
Acid Base ◽  
Base Equilibrium ◽  
Acid Base Equilibrium ◽  
Acids And Bases

Equilibria in acetic acid: Ionic association constant of acetamidium perchlorate and acid-base equilibrium constant of acetamidium acetate at 105.7°

1965 ◽  
Vol 18 (6) ◽  
pp. 801 ◽  
Author(s):  
RJL Martin
Keyword(s):  
Dielectric Constant ◽  
Acetic Acid ◽  
Equilibrium Constant ◽  
Association Constant ◽  
Ionic Association ◽  
Equivalent Conductivity ◽  
Acid Base ◽  
Base Equilibrium ◽  
Acid Base Equilibrium

In acetic acid at 105.7� acetamidium perchlorate has an ionic association constant KA = 0.0491 x 106 l. mole-1, a limiting equivalent conductivity A, = 79.4 cm2 Ω-1 equiv.-1, and a centre-to-centre distance between the ions � = 4.67 Ǻ. The acid-base equilibrium constant for acetamidium acetate KB = [ΣNH3Ac+ OAc-]/ [NH2Ac] increases slightly with increasing dielectric constant.

Equilibria in acetic acid: ionic association constant of oxonium perchlorate, acid-base equilibrium constant of oxonium acetate, and autoprotolysisconstant of acetic acid at 105.7°

1965 ◽  
Vol 18 (3) ◽  
pp. 321 ◽  
Author(s):  
RJL Martin
Keyword(s):  
Dielectric Constant ◽  
Acetic Acid ◽  
Equilibrium Constant ◽  
Association Constant ◽  
Ionic Association ◽  
Aqueous Acetic Acid ◽  
Equivalent Conductivity ◽  
Acid Base ◽  
Base Equilibrium ◽  
Acid Base Equilibrium

In aqueous acetic acid, 0.114-0.152M H2O, at 105.7�, oxonium perchlorate has limiting equivalent conductivity Λ0 90.7, ionic association constant KA = [H3O+ClO4-]/[H3O+][ClO4]f2 = 0.0310 x 106 and centre-to-centre distance between the ions (� = 4.84 Ǻ. The acid-base equilibrium constant for oxonium acetate KB = [ΣH3O+ OAc-]/[H2O] increases with the dielectric constant so that -log KB = 1.532+29.44/D. The autoprotolysis of acetic acid also increases with the dielectric constant.

Identification of valence electronic states of aqueous acetic acid in acid–base equilibrium using site-selective X-ray emission spectroscopy

2009 ◽  
Vol 11 (39) ◽  
pp. 8676 ◽  
Author(s):  
Yuka Horikawa ◽  
Takashi Tokushima ◽  
Yoshihisa Harada ◽  
Osamu Takahashi ◽  
Ashish Chainani ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Emission Spectroscopy ◽  
Electronic States ◽  
Aqueous Acetic Acid ◽  
Acid Base ◽  
X Ray ◽  
Base Equilibrium ◽  
Acid Base Equilibrium ◽  
Site Selective

scholarly journals The Combined Effects of Magnesium Oxide and Inulin on Intestinal Microbiota and Cecal Short-Chain Fatty Acids

Nutrients ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 152
Author(s):  
Kanako Omori ◽  
Hiroki Miyakawa ◽  
Aya Watanabe ◽  
Yuki Nakayama ◽  
Yijin Lyu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Acetic Acid ◽  
Dietary Fiber ◽  
Magnesium Oxide ◽  
Acid Concentration ◽  
Short Chain Fatty Acids ◽  
Water Soluble ◽  
Short Chain ◽  
Acetic Acid Concentration ◽  
Chain Fatty Acids

Constipation is a common condition that occurs in many people worldwide. While magnesium oxide (MgO) is often used as the first-line drug for chronic constipation in Japan, dietary fiber intake is also recommended. Dietary fiber is fermented by microbiota to produce short-chain fatty acids (SCFAs). SCFAs are involved in regulating systemic physiological functions and circadian rhythm. We examined the effect of combining MgO and the water-soluble dietary fiber, inulin, on cecal SCFA concentration and microbiota in mice. We also examined the MgO administration timing effect on cecal SCFAs. The cecal SCFA concentrations were measured by gas chromatography, and the microbiota was determined using next-generation sequencing. Inulin intake decreased cecal pH and increased cecal SCFA concentrations while combining MgO increased the cecal pH lowered by inulin and decreased the cecal SCFA concentrations elevated by inulin. When inulin and MgO were combined, significant changes in the microbiota composition were observed compared with inulin alone. The MgO effect on the cecal acetic acid concentration was less when administered at ZT12 than at ZT0. In conclusion, this study suggests that MgO affects cecal SCFA and microbiota during inulin feeding, and the effect on acetic acid concentration is time-dependent.

scholarly journals ACID-BASE EQUILIBRIUM IN THE NORMAL

1942 ◽  
Vol 144 (2) ◽  
pp. 529-535
Author(s):  
Frank C. d'Elseaux ◽  
Frances C. Blackwood ◽  
Lucille E. Palmer ◽  
Katherine G. Sloman
Keyword(s):  
Acid Base ◽  
Base Equilibrium ◽  
Acid Base Equilibrium
Sign in / Sign up

Export Citation Format

Share Document