Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/73696
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Type: | Journal article |
Title: | Sensing free sulfur dioxide in wine |
Author: | Monro, T. Moore, R. Nguyen, M. Ebendorff-Heidepriem, H. Skouroumounis, G. Elsey, G. Taylor, D. |
Citation: | Sensors, 2012; 12(8):10759-10773 |
Publisher: | Molecular Diversity Preservation International (MDPI) |
Issue Date: | 2012 |
ISSN: | 1424-8220 1424-8220 |
Statement of Responsibility: | Tanya M. Monro, Rachel L. Moore, Mai-Chi Nguyen, Heike Ebendorff-Heidepriem, George K. Skouroumounis, Gordon M. Elsey and Dennis K. Taylor |
Abstract: | Sulfur dioxide (SO2) is important in the winemaking process as it aids in preventing microbial growth and the oxidation of wine. These processes and others consume the SO2 over time, resulting in wines with little SO2 protection. Furthermore, SO2 and sulfiting agents are known to be allergens to many individuals and for that reason their levels need to be monitored and regulated in final wine products. Many of the current techniques for monitoring SO2 in wine require the SO2 to be separated from the wine prior to analysis. This investigation demonstrates a technique capable of measuring free sulfite concentrations in low volume liquid samples in white wine. This approach adapts a known colorimetric reaction to a suspended core optical fiber sensing platform, and exploits the interaction between guided light located within the fiber voids and a mixture of the wine sample and a colorimetric analyte. We have shown that this technique enables measurements to be made without dilution of the wine samples, thus paving the way towards real time in situ wine monitoring. |
Keywords: | Sulfur dioxide potassium (sodium) metabisulfite wine microstructured optical fiber sensors wine sensing pararosaniline |
Rights: | © 2012 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
DOI: | 10.3390/s120810759 |
Published version: | http://dx.doi.org/10.3390/s120810759 |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest 5 IPAS publications |
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hdl_73696.pdf | Published version | 642.34 kB | Adobe PDF | View/Open |
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