Searched for: subject%3A%22Engineering%22
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Totlani, K. (author)
A crucial challenge during the initial stages of bioprocess development is that tools used to screen microorganisms and optimize cultivation conditions do not represent the environment imposed at industrial scale. Inside an industrial-scale bioreactor, microorganisms are often cultivated under fed-batch conditions, where nutrients are supplied...
doctoral thesis 2021
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Perli, T. (author)
The increase in world population together with an unsustainable and fossil fuel-based economy are at the root of the significant increase in the average global temperature since the pre-industrial era. Switching to a more sustainable and circular bio-based economy is one of the main pillars included in the Paris agreement aimed at reducing green...
doctoral thesis 2021
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Verhoeven, M.D. (author), Bracher, J.M. (author), Nijland, Jeroen G. (author), Bouwknegt, J. (author), Daran, J.G. (author), Driessen, Arnold J.M. (author)
Cas9-assisted genome editing was used to construct an engineered glucose-phosphorylation-negative S. cerevisiae strain, expressing the Lactobacillus plantaruml-arabinose pathway and the Penicillium chrysogenum transporter PcAraT. This strain, which showed a growth rate of 0.26 h−1 on l-arabinose in aerobic batch cultures, was subsequently...
journal article 2018
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Papapetridis, I. (author), Verhoeven, M.D. (author), Wiersma, S.J. (author), Goudriaan, M. (author), van Maris, A.J.A. (author), Pronk, J.T. (author)
Simultaneous fermentation of glucose and xylose can contribute to improved productivity and robustness of yeast-based processes for bioethanol production from lignocellulosic hydrolysates. This study explores a novel laboratory evolution strategy for identifying mutations that contribute to simultaneous utilisation of these sugars in batch...
journal article 2018
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Vos, T. (author), De la Torre Cortes, P. (author), Van Gulik, W.M. (author), Pronk, J.T. (author), Daran-Lapujade, P.A.S. (author)
Introduction: Saccharomyces cerevisiae has become a popular host for production of non-native compounds. The metabolic pathways involved generally require a net input of energy. To maximize the ATP yield on sugar in S. cerevisiae, industrial cultivation is typically performed in aerobic, sugar-limited fed-batch reactors which, due to constraints...
journal article 2015
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Huisjes, E.H. (author)
The ambition to reduce our current dependence on fossil transportation fuels has driven renewed interest in bioethanol. Pectin-rich feedstocks like sugar beet pulp and citrus peel, which are currently sold as cattle feed, are promising raw materials for the production of bioethanol. This thesis explores the challenges related to the fermentation...
doctoral thesis 2013
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De Kok, S. (author)
Metabolic engineering – the improvement of cellular activities by manipulation of enzymatic, transport and regulatory functions of the cell – has enabled the industrial production of a wide variety of biological molecules from renewable resources. Microbial production of fuels and chemicals thereby provides an alternative to oil-based production...
doctoral thesis 2012
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Zelle, R.M. (author)
Biotechnological production of chemicals from renewable feedstocks offers a sustainable alternative to petrochemistry. Understanding of the biology of microorganisms and plants is increasing at an unprecedented rate and tools with which these organisms can be engineered for industrial application are becoming ever more powerful. However,...
doctoral thesis 2011
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Kuijper, S.M. (author)
For various reasons mankind is looking for alternatives for fossil fuels. One of these alternatives is ethanol made from plant biomass. However, the plant material when broken down by hydrolysis into its sugar monomers contains a significant amount of xylose, a 5-carbon-sugar or pentose. Contrary to the sugars with 6 carbon atoms (hexoses) wild...
doctoral thesis 2006
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Vuralhan, Z. (author)
Saccharomyces cerevisiae is a popular industrial microorganism. It has since long been used in bread, beer and wine making. More recently it is also being applied for heterologous protein production and as a target organism for metabolic engineering. The work presented in this thesis describes how S. cerevisiae may be used as a metabolic...
doctoral thesis 2006
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