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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Acknowledgements
Part of the research described in this paper was carried out as part of the HARMONIA project of the EC (Hemp as Raw Material for Novel Industrial Applications; QLK5-CT-1999-01505). The authors gratefully acknowledge the contribution of Plant Research International, PRI, The Netherlands, which provided all the hemp samples.
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Kessler, W., Kessler, R.W. Multivariate curve resolution: a method of evaluating the kinetics of biotechnological reactions. Anal Bioanal Chem 384, 1087–1095 (2006). https://doi.org/10.1007/s00216-005-0077-7
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DOI: https://doi.org/10.1007/s00216-005-0077-7