Various instrumental approaches for determination of organic acids in wines.

Various instrumental approaches for determination of organic acids in wines.

Food chemistry (2015-10-17)

Jiri Zeravik, Zdenka Fohlerova, Miodrag Milovanovic, Ondrej Kubesa, Marta Zeisbergerova, Karel Lacina, Aleksandar Petrovic, Zdenek Glatz, Petr Skladal

PMID26471576

ABSTRACT

Biosensors based on lactate oxidase, sarcosine oxidase and mixture of fumarase and sarcosine oxidase were used for monitoring of organic acids in wine samples. Additionally, tartaric acid was determined by modified colorimetric method based on formation of the vanadate-tartrate complex. The above mentioned methods were used for the analysis of 31 wine samples and obtained data were compared with the results from capillary electrophoresis as a basic standard method. This comparison showed a certain degree of correlation between biosensors and capillary electrophoresis. The provided information pointed to the potential uses of biosensors in the field of winemaking.

MATERIALS

Product Number

Brand

Product Description

V900068

Sigma-Aldrich

Potassium chloride, Vetec^™, reagent grade, 99%

60130

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Potassium chloride, puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E508, 99-100.5% (AT), ≤0.0001% Al

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793590

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323381

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