Searched for: author%3A%22Douma%2C+R.D.%22
(1 - 4 of 4)
document
De Jonge, L.P. (author), Douma, R.D. (author), Heijnen, J.J. (author), Van Gulik, W.M. (author)
A sampling procedure for quantitative metabolomics in Penicillium chrysogenum based on cold aqueous methanol quenching was re-evaluated and optimized to reduce metabolite leakage during sample treatment. The optimization study included amino acids and intermediates of the glycolysis and the TCA-cycle. Metabolite leakage was found to be minimal...
journal article 2011
document
Douma, R.D. (author), Batista, J.M. (author), Touw, K.M. (author), Kiel, J.A.K.W. (author), Krikken, A.M. (author), Zhao, Z. (author), Veiga, T. (author), Klaassen, P. (author), Bovenberg, R.A.L. (author), Daran, J.M. (author), Heijnen, J.J. (author), Van Gulik, W.M. (author)
Background In microbial production of non-catabolic products such as antibiotics a loss of production capacity upon long-term cultivation (for example chemostat), a phenomenon called strain degeneration, is often observed. In this study a systems biology approach, monitoring changes from gene to produced flux, was used to study degeneration of...
journal article 2011
document
Douma, R.D. (author)
Penicillin has been produced on an industrial scale for several decades. The improvements in its production process, in terms of product yields and production rates, present an unprecedented success in fermentation technology. However, the obtained product yields still remain far from their theoretical maximum. More insight in the regulation of...
doctoral thesis 2010
document
Gidijala, L. (author), Kiel, J.A.K.W. (author), Douma, R.D. (author), Seifar, R.M. (author), Van Gulik, W.M. (author), Bovenberg, R.A.L. (author), Veenhuis, M. (author), Van Klei, I.J. (author)
This study aimed at developing an alternative host for the production of penicillin (PEN). As yet, the industrial production of this β-lactam antibiotic is confined to the filamentous fungus Penicillium chrysogenum. As such, the yeast Hansenula polymorpha, a recognized producer of pharmaceuticals, represents an attractive alternative....
journal article 2009
Searched for: author%3A%22Douma%2C+R.D.%22
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