K. Grohmann et al., FERMENTATION OF GALACTURONIC ACID AND OTHER SUGARS IN ORANGE PEEL HYDROLYSATES BY THE ETHANOLOGENIC STRAW OF ESCHERICHIA-COLI, Biotechnology letters, 16(3), 1994, pp. 281-286
Enzymatic hydrolysates of orange peel contain relatively high levels o
f galacturonic acid and arabinose which are not fermentable to ethanol
by yeasts. We observed complete utilization of both sugars during fer
mentation of peel hydrolysates by the ethanologenic construct of E. co
li KO11. The bacterium exhibits a novel pattern of galacturonic acid f
ermentation producing equimolar amounts of acetate and ethanol accompa
nied by carbon dioxide.