Multivariate curve resolution: a method of evaluating the kinetics of biotechnological reactions |
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Authors: | W Kessler R W Kessler |
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Institution: | (1) STZ Prozesskontrolle und Datenanalyse, Herderstr. 47, 72762 Reutlingen, Germany;(2) Institut für Angewandte Forschung, Reutlingen University, Alteburgstr. 150, 72762 Reutlingen, Germany |
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Abstract: | In biotechnology, strong emphasis is placed on the development of wet chemical analysis and chromatography to separate target
components from a complex matrix. In bioprocessing, the development of single compound biosensors is an important activity.
The advantages of these techniques are their high sensitivity and specificity. Inline or online monitoring by means of spectroscopy
has the potential to be used as an “all-in-one” analysis technique for biotechnological studies, but it lacks specificity.
Multivariate curve resolution (MCR) can be used to overcome this limitation. MCR is able to extract the number of components
involved in a complex spectral feature, to attribute the resulting spectra to chemical compounds, to quantify the individual
spectral contributions, and to use this quantification to develop kinetic models for the process with or without a priori
knowledge. After a short introduction to MCR, two applications are presented. In the first example, the spectral features
of hemp are monitored and analysed during growth. MCR provides unperturbed spectra on the activity of, for example, lignin
and cellulose during plant development. In a second example, the kinetics of a laccase enzyme-catalysed degradation of aromatic
hydrocarbons are calculated from UV/VIS spectra. |
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Keywords: | Multivariate curve resolution Online spectroscopy Laccases Cellulose Hemp |
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