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Use of an electronic tongue to analyze mold growth in liquid media
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Applied Physics .
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Organic Analytical Chemistry .
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Applied Physics .
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Applied Physics .
2003 (English)In: International Journal of Food Microbiology, ISSN 0168-1605, E-ISSN 1879-3460, Vol. 83, no 3, 253-261 p.Article in journal (Refereed) Published
Abstract [en]

The feasibility of employing an electronic tongue to measure the growth of mold in a liquid medium was studied. We used the electronic tongue developed at Linköping University, which is based on pulsed voltammetry and consists of an array of different metal electrodes. Instead of focusing on a single parameter, this device provides information about the condition or quality of a sample or process. Accordingly, the data obtained are complex, and multivariate methods such as principal component analysis (PCA) or projection to latent structures (PLS) are required to extract relevant information. A gas chromatographic technique was developed to measure ergosterol content in mold biomass and was subsequently used as a reference method to investigate the ability of the electronic tongue to measure the growth of mold in liquid media. The result shows that the electronic tongue can monitor mold growth in liquids. In PLS analysis, the electronic tongue signals correlate well with the amount of ergosterol in the mold biomass as well as the microbially induced changes in the pH of the medium. © 2002 Elsevier Science B.V. All rights reserved.

Place, publisher, year, edition, pages
2003. Vol. 83, no 3, 253-261 p.
Keyword [en]
Electronic tongue, Liquid media, Mold growth
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-46588DOI: 10.1016/S0168-1605(02)00375-6OAI: oai:DiVA.org:liu-46588DiVA: diva2:267484
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13

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Söderström, CharlotteBorén, HansWinquist, FredrikKrantz-Rülcher, Christina

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Söderström, CharlotteBorén, HansWinquist, FredrikKrantz-Rülcher, Christina
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The Institute of TechnologyApplied Physics Organic Analytical Chemistry
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