Acidogenic fermentation

Ghosh, S. Sun, M. L. (1992). Anaerobic biodegradation of benzene under acidogenic fermentation condition. In Proceedings of the Conference on Hazardous Waste Research, ed. L. E. Erickson, S. C. Grant J. P. McDonald, pp. 208-18. Manhattan, KS Engineering Extension. 

TABLE 12.5 Comparison of Kinetic Constants of Mesophilic Acidogenic Fermentation of Glucose, Cellulose, and Activated Biosolids and Mesophilic Methanogenic Fermentation of Acetic Acid ... 

Figure 2 Anaerobic acidogenic fermentation of sediment mud suspension without vitamin addition (a) and with vitamin addition (b). The vitamin concentration added to the suspension was 1 mg/L of thiamine, I mg/L of nicotinic acid and 10 gg/L-of biotin. . 200 g sediment mud/L artificial sea water , 400 g sediment mud/L artificial sea water.

Figure 3 Profiles of cell growth (ODM0 and dry cell), acetic acid, phosphate, ammonium, nitrate COD and intracellular carotinoid by R. sphaeroides IL106 on anaerobic acidogenic fermentation liquor of sediment mud. O, control (no inoculation of IL106) , 2% (v/v) inoculation of IL106 A, 4% (v/v) inoculation of IL106. 200 mg/L of ammonium (NH4+-N) as added as (NH4)2S04.

Bengtsson S, HaUquist J, Werker A, Welander T. Acidogenic fermentation of industrial vrastevraters effects of chemostat retention time and pH on volatile fatty acids production. Biochem Eng J 2008 40 492-9. 

Commonest oral bacteria and can represent up to 70% of plaque organisms. Strongly acidogenic, fermenting sugars and other dietary carbohydrates to organic acids which can reduce the external pH to 4-5. Produce intracellular and extracellular polysaccharides which act as carbohydrate reserves and enhance surface colonization. Frequently isolated from carious plaques and produce caries in... 

Maddox IS (1980) Production of n-butanol from whey filtrate using Clostridium acetobutylicum NCIB 2951. Biotechnol Lett 2 493-498 Maddox IS, Steiner E, Hirsch S, Wessner S, Gutierrez NA, Gapes JR, Schuster KG (2000) The cause of acid crash and acidogenic fermentations during the batch acetone-butanol-ethanol (ABE-) fermentation process. J Molec Microbiol Biotechnol 2 95-100... 

FW Heating Acidogenic fermentation tank (500 L) Batch to continuous 0.88... 

Lactobionic acid. This derivative is produced by oxidation of the free carbonyl group of lactose (Figure 2.25), chemically (Pt, Pd or Bi), electro-lytically, enzymatically or by fermentation. Its lactone crystallizes readily. Lactobionic acid has found only limited application its lactone could be used as an acidogen but it is probably not cost-competitive with gluconic acid-<5-lactone. It is used in preservation solutions for organs prior to transplants. 

Acid production is a key feature in the manufacture of all cheese varieties -the pH decreases to about 5 ( 0.3, depending on variety) within 5-20h, at a rate depending on the variety (Figure 10.11). Acidification is normally achieved via the bacterial fermentation of lactose to lactic acid, although an acidogen, usually gluconic acid-<5-lactone, alone or in combination with acid, may be used in some cases, e.g. Mozzarella. 

On acidification to pH 4.6, the caseins coagulate, which is the principle used to manufacture of a family of cheeses which represent about 25% of total cheese consumption and are the principal cheeses in some countries (Appendix 10B). Acidification is traditionally and usually achieved by in situ fermentation of lactose by a Lactococcus starter but direct acidification by acid or acidogen (gluconic acid-d-lactone) is also practised. The principal... 

Maltitol is not fermented by oral bacteria and is neither acidogenic nor cariogenic. A specification for maltitol syrup is contained in the Food Ghemicals Godex (EGG). The EINEGS number for maltitol is 209-567-0. 

For a full cavity to develop, the process of demineralization has to occur at a faster rate than remineralization, and to be able to continue unchecked [29-32]. The pathological factors that promote this include the continued presence of acidogenic bacteria, repeated consumption of fermentable carbohydrates and also, in some patients, reduced sahvary function [32]. 

The acidogenic and solventogenic metabolic pathways in Clostridia have been detailed (41). Clostridial bacteria can also ferment other cheaper alternative biomass such as, lignocellulosic materials due to their saccharolytic ability (42). There, an acidic or enz5miatic hydrolysis of lignocellulosic materials is necessary to convert them into monosaccharides before they can be used as substrates in the... 

Fermentative or acidogenic bacteria convert simpler compounds to short chain fatty acids, alcohols, ammonia, hydrogen and carbon dioxide. 

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