Membrane inlet ion mobility spectrometry for on-line measurement of ethanol in beer and in yeast fermentation

Tapio Kotiaho, Frants Lauritsen, Hans Degn, Heikki Paakkanen

Research output: Contribution to journalArticleScientificpeer-review

33 Citations (Scopus)

Abstract

A membrane inlet ion mobility spectrometric method was developed for on-line measurement of ethanol concentration in beer and in yeast fermentation. Main parts of the measurement system are an ion mobility spectrometer, M90, and a custom built membrane inlet. The M90 ion mobility spectrometer is unique in the sense that positive and negative ions are simultaneously measured at 6 different detection channels, 3 for positive ions and 3 for negative ions. The custom built membrane inlet utilized a microporous polypropylene membrane for sample introduction into the M90 instrument.
The developed measurement system allowed analysis of ethanol at 0.05% () levels, clearly sufficient for the applications reported here. Good signal linearity was observed at positive ion channels 1 and 3 in ethanol concentration range 0.2−10% (), calculated correlation coefficients were 0.989 and 0.999, respectively. Agreement between the ethanol concentration measured by membrane inlet ion mobility spectrometry and the values declared on the beer bottle labels was good. Reproducibility of signals of the detection channels which gave the best response for ethanol was excellent in ethanol concentration measurement of beer samples, coefficient of variation was 1% for all these channels.
Membrane inlet ion mobility spectrometry was also shown to be capable of on-line ethanol measurement, confirmed by membrane inlet mass spectrometry, during yeast fermentations.

Original languageEnglish
Pages (from-to)317-325
JournalAnalytica Chimica Acta
Volume309
Issue number1-3
DOIs
Publication statusPublished - 1995
MoE publication typeA1 Journal article-refereed

Fingerprint

Beer
Yeast
Fermentation
Spectrometry
fermentation
yeast
spectrometry
ethanol
Spectrum Analysis
Ethanol
Yeasts
Ions
membrane
Membranes
ion
Ion mobility spectrometers
Positive ions
Negative ions
spectrometer
Polypropylenes

Cite this

Kotiaho, Tapio ; Lauritsen, Frants ; Degn, Hans ; Paakkanen, Heikki. / Membrane inlet ion mobility spectrometry for on-line measurement of ethanol in beer and in yeast fermentation. In: Analytica Chimica Acta. 1995 ; Vol. 309, No. 1-3. pp. 317-325.
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title = "Membrane inlet ion mobility spectrometry for on-line measurement of ethanol in beer and in yeast fermentation",
abstract = "A membrane inlet ion mobility spectrometric method was developed for on-line measurement of ethanol concentration in beer and in yeast fermentation. Main parts of the measurement system are an ion mobility spectrometer, M90, and a custom built membrane inlet. The M90 ion mobility spectrometer is unique in the sense that positive and negative ions are simultaneously measured at 6 different detection channels, 3 for positive ions and 3 for negative ions. The custom built membrane inlet utilized a microporous polypropylene membrane for sample introduction into the M90 instrument. The developed measurement system allowed analysis of ethanol at 0.05{\%} () levels, clearly sufficient for the applications reported here. Good signal linearity was observed at positive ion channels 1 and 3 in ethanol concentration range 0.2−10{\%} (), calculated correlation coefficients were 0.989 and 0.999, respectively. Agreement between the ethanol concentration measured by membrane inlet ion mobility spectrometry and the values declared on the beer bottle labels was good. Reproducibility of signals of the detection channels which gave the best response for ethanol was excellent in ethanol concentration measurement of beer samples, coefficient of variation was 1{\%} for all these channels. Membrane inlet ion mobility spectrometry was also shown to be capable of on-line ethanol measurement, confirmed by membrane inlet mass spectrometry, during yeast fermentations.",
author = "Tapio Kotiaho and Frants Lauritsen and Hans Degn and Heikki Paakkanen",
year = "1995",
doi = "10.1016/0003-2670(95)00086-F",
language = "English",
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journal = "Analytica Chimica Acta",
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Membrane inlet ion mobility spectrometry for on-line measurement of ethanol in beer and in yeast fermentation. / Kotiaho, Tapio; Lauritsen, Frants; Degn, Hans; Paakkanen, Heikki.

In: Analytica Chimica Acta, Vol. 309, No. 1-3, 1995, p. 317-325.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Membrane inlet ion mobility spectrometry for on-line measurement of ethanol in beer and in yeast fermentation

AU - Kotiaho, Tapio

AU - Lauritsen, Frants

AU - Degn, Hans

AU - Paakkanen, Heikki

PY - 1995

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AB - A membrane inlet ion mobility spectrometric method was developed for on-line measurement of ethanol concentration in beer and in yeast fermentation. Main parts of the measurement system are an ion mobility spectrometer, M90, and a custom built membrane inlet. The M90 ion mobility spectrometer is unique in the sense that positive and negative ions are simultaneously measured at 6 different detection channels, 3 for positive ions and 3 for negative ions. The custom built membrane inlet utilized a microporous polypropylene membrane for sample introduction into the M90 instrument. The developed measurement system allowed analysis of ethanol at 0.05% () levels, clearly sufficient for the applications reported here. Good signal linearity was observed at positive ion channels 1 and 3 in ethanol concentration range 0.2−10% (), calculated correlation coefficients were 0.989 and 0.999, respectively. Agreement between the ethanol concentration measured by membrane inlet ion mobility spectrometry and the values declared on the beer bottle labels was good. Reproducibility of signals of the detection channels which gave the best response for ethanol was excellent in ethanol concentration measurement of beer samples, coefficient of variation was 1% for all these channels. Membrane inlet ion mobility spectrometry was also shown to be capable of on-line ethanol measurement, confirmed by membrane inlet mass spectrometry, during yeast fermentations.

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JO - Analytica Chimica Acta

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