Showing papers on "2,3-Butanediol published in 1947"
TL;DR: Under aerobic conditions both the Marburg and Ford types of Bacillus subtilis dissimilate glucose, giving carbon dioxide, acetoin, and 2,3-butanediol as the main products, and small amounts of glycerol and acetic, formic, lactic, and n-butyric acids.
Abstract: Under aerobic conditions both the Marburg and Ford types of Bacillus subtilis dissimilate glucose, giving carbon dioxide, acetoin, and 2,3-butanediol as the main products, and small amounts of glycerol and acetic, formic, lactic, and n-butyric acids. The Ford type cultures dissimilate the sugar more rapidly and also give a small amount of ethanol.Under anaerobic conditions Marburg type cultures will not ferment glucose while the Ford type cultures dissimilate it as rapidly as they do under aerobic conditions. Some strains give 2,3-butanediol, glycerol, and carbon dioxide as the major products while others give chiefly lactic acid. As much as 86% and as little as 8% of the glucose was converted to 2,3-butanediol plus glycerol. The 2,3-butanediol was a mixture of 65% meso- and 35% levo-isomers, while the lactic acid was approximately 90% dextro-isomer in most cases.It is suggested that the Ford type deserves separate species rank.
19 citations
7 citations
TL;DR: In the A. polymyxa fermentation, aerobic as compared to anaerobic conditions resulted in an increased yield of acetoin plus diol and a decreased yield of ethanol and there was a decrease in the proportion substrate being used in the formation ofacetoin and diol.
Abstract: In the A. polymyxa fermentation, aerobic as compared to anaerobic conditions resulted in an increased yield of acetoin plus diol and a decreased yield of ethanol. As the fermentation proceeded under anaerobic conditions, there was a decrease in the proportion substrate being used in the formation of acetoin and diol. This decrease was accompanied by an increase in the formation of acetic acid. During fermentation under aerobic conditions, no decrease occurred in the formation of acetoin plus diol.
6 citations
TL;DR: In this paper, the cyclic sulphite of meso-2,3-butanediol (b.p. 188° to 189 °C) was also prepared and shown to be optically active and can be hydrolyzed by dilute hydrochloric acid.
Abstract: levo-2,3-Butanediol reacts spontaneously with thionyl chloride to give good yields of its cyclic sulphite (b.p. 177° to 178 °C.). This ester is optically active and can be hydrolyzed by dilute hydrochloric acid to pure levo-2,3-butanediol and sulphurous acid. The cyclic sulphite of meso-2,3-butanediol (b.p. 188° to 189 °C.) was also prepared.
3 citations