Details
| Original language | English |
|---|---|
| Pages (from-to) | 63-74 |
| Number of pages | 12 |
| Journal | Biotechnology progress |
| Volume | 14 |
| Issue number | 1 |
| Publication status | Published - 1998 |
Abstract
Two-dimensional fluorescence spectroscopy is presented as a new method for bioprocess monitoring. It covers a wide range of excitation and emission wavelengths and is a further development of the fluorescence measurements performed so far, which concentrated mainly on NAD(P)H culture fluorescence. Biogenic fluorophores such as proteins, coenzymes, and vitamins can simultaneously be detected qualitatively and quantitatively inside and outside the cells. This optical method is noninvasive, suitable for in vive measurements. One whole spectrum (excitation, 250-550 nm; emission, 260-600 nm) with the described parameters is performed within 1 min, which allows an almost continuous monitoring of the bioprocess. The technique is ideal for on-line, in situ measurements via fiber optical systems. Results are presented for cultivations of Claviceps purpurea, Escherichia coli, Saccharomyces cerevisiae, and Sphingomonas yanoikuyae. Cell growth and the metabolism of the cells (changes from aerobic to anaerobic conditions and uncoupling of the oxidative phosphorylation) could be detected.
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biotechnology
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In: Biotechnology progress, Vol. 14, No. 1, 1998, p. 63-74.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Two-Dimensional Fluorescence Spectroscopy: A New Tool for On-Line Bioprocess Monitoring
AU - Marose, Stefan
AU - Lindemann, Carsten
AU - Scheper, Thomas
PY - 1998
Y1 - 1998
N2 - Two-dimensional fluorescence spectroscopy is presented as a new method for bioprocess monitoring. It covers a wide range of excitation and emission wavelengths and is a further development of the fluorescence measurements performed so far, which concentrated mainly on NAD(P)H culture fluorescence. Biogenic fluorophores such as proteins, coenzymes, and vitamins can simultaneously be detected qualitatively and quantitatively inside and outside the cells. This optical method is noninvasive, suitable for in vive measurements. One whole spectrum (excitation, 250-550 nm; emission, 260-600 nm) with the described parameters is performed within 1 min, which allows an almost continuous monitoring of the bioprocess. The technique is ideal for on-line, in situ measurements via fiber optical systems. Results are presented for cultivations of Claviceps purpurea, Escherichia coli, Saccharomyces cerevisiae, and Sphingomonas yanoikuyae. Cell growth and the metabolism of the cells (changes from aerobic to anaerobic conditions and uncoupling of the oxidative phosphorylation) could be detected.
AB - Two-dimensional fluorescence spectroscopy is presented as a new method for bioprocess monitoring. It covers a wide range of excitation and emission wavelengths and is a further development of the fluorescence measurements performed so far, which concentrated mainly on NAD(P)H culture fluorescence. Biogenic fluorophores such as proteins, coenzymes, and vitamins can simultaneously be detected qualitatively and quantitatively inside and outside the cells. This optical method is noninvasive, suitable for in vive measurements. One whole spectrum (excitation, 250-550 nm; emission, 260-600 nm) with the described parameters is performed within 1 min, which allows an almost continuous monitoring of the bioprocess. The technique is ideal for on-line, in situ measurements via fiber optical systems. Results are presented for cultivations of Claviceps purpurea, Escherichia coli, Saccharomyces cerevisiae, and Sphingomonas yanoikuyae. Cell growth and the metabolism of the cells (changes from aerobic to anaerobic conditions and uncoupling of the oxidative phosphorylation) could be detected.
UR - http://www.scopus.com/inward/record.url?scp=0031907915&partnerID=8YFLogxK
U2 - 10.1021/bp970124o
DO - 10.1021/bp970124o
M3 - Article
C2 - 9496670
AN - SCOPUS:0031907915
VL - 14
SP - 63
EP - 74
JO - Biotechnology progress
JF - Biotechnology progress
SN - 8756-7938
IS - 1
ER -