Safety aspects of novel foods
The rational improvement of microbial strains for the production of primary and secondary metabolites ('metabolic engineering') requires a quantitative understanding of microbial metabolism. A process by which this information can be derived from dynamic fermentation experiments is presented. By applying a substrate pulse to a substrate-limited, st...
Published in Analytical Biochemistry
The primary goal of metabolomic analysis is the unbiased relative quantification of every metabolite in a biological system. A number of different metabolite-profiling techniques must be combined to make this possible. Here we report the separation and analysis of highly polar compounds in a proof of concept study. Compounds were separated and anal...
Published in Phytochemistry Reviews
Metabolomic approaches are taking place within emerging technologies that share the focus to unravel unexpected effects in classical biological experiments, for example mutant/wild type comparisons. This review highlights the possibility of metabolomics going beyond this stage and comparing the onset and the pathogenesis of complex diseases, such a...
New techniques in sample preparation allow high throughput analysis of samples on the transcriptional as well as on the metabolic level. We present a service accessible via the web that allows the analysis of integrated data sets that combine gene-expression data and metabolic data. After uploading, data sets can be normalized, clustered by various...
Published in Proceedings of the National Academy of Sciences of the United States of America
Despite the tremendous importance of secondary metabolites for humans as for the plant itself, plant secondary metabolism remains poorly characterized. Here, we present an experimental approach, based on functional genomics, to facilitate gene discovery in plant secondary metabolism. Targeted metabolite analysis was combined with cDNA-amplified fra...
Plant Physiology Vol.131 Nr.3, 1161 - 1164
Published in Fish Physiology and Biochemistry
The metabolic condition, stress response, and growth rates of juvenile steelhead trout (Oncorhynchus mykiss) were assessed throughout a 10-week exposure to 15 and 20 °C, each at full and half food ration. Metabolic measurements included white muscle phosphocreatine (PCr), ATP, ADP and AMP, hepatic glycogen, and global metabolite profiling of muscle...
Published in Proceedings of the National Academy of Sciences of the United States of America
Plants synthesize an extensive array of secondary metabolites, often with highly complex structures. Currently, most pharmaceutically important secondary metabolites are isolated from wild or cultivated plants because their chemical synthesis is not economically feasible. Biotechnological production in plant cell cultures is an attractive alternati...