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Zelle, R.M. (author), De Hulster, E. (author), Van Winden, W.A. (author), De Waard, P. (author), Dijkema, C. (author), Winkler, A.A. (author), Geertman, J.M. (author), Van Dijken, J.P. (author), Pronk, J.T. (author), Van Maris, A.J.A. (author)
Malic acid is a potential biomass-derivable "building block" for chemical synthesis. Since wild-type Saccharomyces cerevisiae strains produce only low levels of malate, metabolic engineering is required to achieve efficient malate production with this yeast. A promising pathway for malate production from glucose proceeds via carboxylation of...
journal article 2008
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Abbott, D.A. (author), Suir, E. (author), Duong, G.H. (author), De Hulster, E. (author), Pronk, J.T. (author), Van Maris, A.J.A. (author)
Industrial production of lactic acid with the current pyruvate decarboxylase-negative Saccharomyces cerevisiae strains requires aeration to allow for respiratory generation of ATP to facilitate growth and, even under nongrowing conditions, cellular maintenance. In the current study, we observed an inhibition of aerobic growth in the presence of...
journal article 2009
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Boender, L.G.M. (author), De Hulster, E.A.F. (author), Van Maris, A.J.A. (author), Daran-Lapujade, P.A.S. (author), Pronk, J.T. (author)
Growth at near-zero specific growth rates is a largely unexplored area of yeast physiology. To investigate the physiology of Saccharomyces cerevisiae under these conditions, the effluent removal pipe of anaerobic, glucose-limited chemostat culture (dilution rate, 0.025 h–1) was fitted with a 0.22-µm-pore-size polypropylene filter unit. This...
journal article 2009
document
Zelle, R.M. (author), De Hulster, E. (author), Kloezen, W. (author), Pronk, J.T. (author), Van Maris, A.J.A. (author)
A recent effort to improve malic acid production by Saccharomyces cerevisiae by means of metabolic engineering resulted in a strain that produced up to 59 g liter?1 of malate at a yield of 0.42 mol (mol glucose)?1 in calcium carbonate-buffered shake flask cultures. With shake flasks, process parameters that are important for scaling up this...
journal article 2009
document
Zelle, R.M. (author), De Hulster, E. (author), Kloezen, W. (author), Pronk, J.T. (author), Van Maris, A.J.A. (author)
A recent effort to improve malic acid production by Saccharomyces cerevisiae by means of metabolic engineering resulted in a strain that produced up to 59 g liter(-1) of malate at a yield of 0.42 mol (mol glucose)(-1) in calcium carbonate-buffered shake flask cultures. With shake flasks, process parameters that are important for scaling up this...
journal article 2010
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Boender, L.G.M. (author), Van Maris, A.J.A. (author), De Hulster, E.A.F. (author), Almering, M.J.H. (author), Van der Klei, I.J. (author), Veenhuis, M. (author), De Winde, J.H. (author), Pronk, J.T. (author), Daran-Lapujade, P.A.S. (author)
Extremely low specific growth rates (below 0.01 h?1) represent a largely unexplored area of microbial physiology. In this study, anaerobic, glucose-limited retentostats were used to analyse physiological and genome-wide transcriptional responses of Saccharomyces cerevisiae to cultivation at near-zero specific growth rates. While quiescence is...
journal article 2011
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Huisjes, E.H. (author), De Hulster, E. (author), Van Dam, J.C. (author), Pronk, J.T. (author), Van Maris, A.J.A. (author)
The efficient fermentation of mixed substrates is essential for the microbial conversion of second-generation feedstocks, including pectin-rich waste streams such as citrus peel and sugar beet pulp. Galacturonic acid is a major constituent of hydrolysates of these pectin-rich materials. The yeast Saccharomyces cerevisiae, the main producer of...
journal article 2012
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Mendes, F. (author), Sieuwerts, S. (author), De Hulster, E. (author), Almering, M.J. (author), Luttik, M.A. (author), Pronk, J.T. (author), Smid, E.J. (author), Bron, P.A. (author), Daran-Lapujade, P. (author)
Mixed populations of Saccharomyces cerevisiae yeasts and lactic acid bacteria occur in many dairy, food, and beverage fermentations, but knowledge about their interactions is incomplete. In the present study, interactions between Saccharomyces cerevisiae and Lactobacillus delbrueckii subsp. bulgaricus, two microorganisms that co-occur in kefir...
journal article 2013
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Guadalupe-Medina, V. (author), Wisselink, H.W. (author), Luttik, M.A.H. (author), De Hulster, E. (author), Daran, J.M. (author), Pronk, J.T. (author), Van Maris, A.J.A. (author)
Background Redox-cofactor balancing constrains product yields in anaerobic fermentation processes. This challenge is exemplified by the formation of glycerol as major by-product in yeast-based bioethanol production, which is a direct consequence of the need to reoxidize excess NADH and causes a loss of conversion efficiency. Enabling the use of...
journal article 2013
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Hebly, M. (author), De Ridder, D. (author), De Hulster, E.A. (author), De la Torre Cortes, P. (author), Pronk, J.T. (author), Daran-Lapujade, P.A.S. (author)
Diurnal temperature cycling is an intrinsic characteristic of many exposed microbial ecosystems. However, its influence on yeast physiology and the yeast transcriptome has not been studied in detail. In this study, 24-h sinusoidal temperature cycles, oscillating between 12°C and 30°C, were imposed on anaerobic, glucose-limited chemostat cultures...
journal article 2014
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