GC: n
CT: Role of anaerobic spore-forming bacteria in the acidogenesis of glucose: changes induced by discontinuous or low-rate feed supply.A mineral salts medium containing 1% (w/v) glucose providing carbon-limited growth conditions was subjected to anaerobic acidogenesis by mixed populations of bacteria in chemostat cultures. The formation of butyrate was shown to be dependent on the presence of saccharolytic anaerobic sporeformers in the acid-forming population. By the use of pasteurized activated sludge as an inoculum a culture was obtained consisting solely of anaerobic sporeformers that gave rise to the formation of butyrate, acetate, hydrogen and carbon dioxide as the main fermentation products.
S: PubMed – http://www.ncbi.nlm.nih.gov/pubmed/3929685 (last access: 15 September 2014)
N: 1. – acid (adj.) 1620s, “of the taste of vinegar,” from French acide (16c.) or directly from Latin acidus “sour, sharp,” adjective of state from acere “to be sour,” from PIE root *ak- “sharp, pointed” (see acrid). Figurative use from 1775; applied to intense colors from 1916. Acid test is American English, 1892, from the frontier days, when gold was distinguished from similar metals by application of nitric acid. Acid rain is first recorded 1859 in reference to England.
– genesis (n.) Old English Genesis, first book of the Pentateuch, from Latin genesis, adopted as title of first book of Old Testament in Vulgate, from Greek genesis “origin, creation, generation,” from gignesthai “to be born,” related to genos “race, birth, descent” (see genus). As such, it translated Hebrew bereshith, literally “in the beginning,” which was the first word of the text, taken as its title. Extended sense of “origin, creation” first recorded in English c.1600.
2. Acidogenesis is the second stage in the four stages of anaerobic digestion:
- Hydrolysis: A chemical reaction where particulates are solubilized and large polymers converted into simpler monomers;
- Acidogenesis: A biological reaction where simple monomers are converted into volatile fatty acids;
- Acetogenesis: A biological reaction where volatile fatty acids are converted into acetic acid, carbon dioxide, and hydrogen;
- Methanogenesis: A biological reaction where acetates are converted into methane and carbon dioxide, while hydrogen is consumed.
S: 1. OED – http://www.etymonline.com/index.php?allowed_in_frame=0&search=genesis&searchmode=none (last access 15 September 2014). 2. http://www.abbreviations.com/Acidogenesis (last access: 21 September 2014).
SYN: acid formation
S: GDT (last access: 21 September 2014)
CR: acetogenesis, anaerobic digester, anaerobic digestion, biogas, biomass, biomass energy, methanogenesis, nitric acid, sulfuric acid, fermentation
