8 Result(s)
within
Wael Sabra
Microbiology
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Article
Open AccessSubstrates and oxygen dependent citric acid production by Yarrowia lipolytica: insights through transcriptome and fluxome analyses
Unlike the well-studied backer yeast where catabolite repression represents a burden for mixed substrate fermentation, Yarrowia lipolytica, an oleaginous yeast, is recognized for its potential to produce single c...
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Article
Open AccessMetabolic and proteomic analyses of product selectivity and redox regulation in Clostridium pasteurianum grown on glycerol under varied iron availability
Clostridium pasteurianum as an emerging new microbial cell factory can produce both n-butanol (BuOH) and 1,3-propanediol (1,3-PDO), and the pattern of product formation changes signifi...
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Article
Open AccessFermentation of mixed substrates by Clostridium pasteurianum and its physiological, metabolic and proteomic characterizations
Clostridium pasteurianum is becoming increasingly attractive for the production of chemicals and fuels such as n-butanol and 1,3-propanediol. Previously we have shown that dual substra...
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Article
Open AccessMetabolic network analysis and experimental study of lipid production in Rhodosporidium toruloides grown on single and mixed substrates
Microbial lipids (triacylglycerols, TAG) have received large attention for a sustainable production of oleochemicals and biofuels. Rhodosporidium toruloides can accumulate lipids up to 70% of its cell mass under ...
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Article
Microbial community composition and dynamics in high-temperature biogas reactors using industrial bioethanol waste as substrate
Stillage, which is generated during bioethanol production, constitutes a promising substrate for biogas production within the scope of an integrated biorefinery concept. In this study, a microbial community wa...
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Article
Open AccessImproved n-butanol production by a non-acetone producing Clostridium pasteurianum DSMZ 525 in mixed substrate fermentation
The kinetics of growth, acid and solvent production in batch culture of Clostridium pasteurianum DSMZ 525 were examined in mixed or mono-substrate fermentations. In pH-uncontrolled batch cultures, the addition of...
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Article
Open AccessCo-cultivation of Lactobacillus zeae and Veillonella criceti for the production of propionic acid
In this work a defined co-culture of the lactic acid bacterium Lactobacillus zeae and the propionate producer Veillonella criceti has been studied in continuous stirred tank reactor (CSTR) and in a dialysis membr...
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Microbial Production of Alginates: Physiology and Process Aspects
Presently, most of the alginate produced commercially is still obtained from algae, although it is subjected to variations in quality and quantity due to changes of climate and sources. Alginate can also be bi...
