J. Ogawa et al., Enzymatic production of pyruvate from fumarate - an application of microbial cyclic-imide-transforming pathway, J MOL CAT B, 11(4-6), 2001, pp. 355-359
For the purpose of producing pyruvate from fumarate through microbial cycli
c-imide-transforming pathway, various cyclic-imide-utilizing microorganisms
were isolated from soil. Among them, strain g31 was the best producer and
was identified as Pseudomonas sp. With the resting cells of the strain, the
conditions were optimized for pyruvate production from fumarate. The cells
cultivated in the medium containing 2% (w/v) of fumarate showed the highes
t production with sufficient yield. The optimized wet-cell concentration, p
H and temperature of the reaction were 1% (w/v), pH 6 to 7, and 30 degreesC
, respectively. Aeration was found to be an effective factor, and vigorous
shaking during the reaction mixture resulted in higher production. Under th
e optimized reaction conditions, 100 mM of fumarate was almost stoichiometr
ically converted into pyruvate (94 mM) in 24 h. (C) 2001 Elsevier Science B
.V. All rights reserved.