- 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
ZUSAMMENFASSUNG
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.
MATERIALIEN
Produktnummer
Marke
Produktbeschreibung
Sigma-Aldrich
Zitronensäure, meets analytical specification of Ph. Eur., BP, USP, E330, anhydrous, 99.5-100.5% (based on anhydrous substance)
Sigma-Aldrich
Natriumphosphat, puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E 339, anhydrous, 98-100.5% (calc. to the dried substance)
Sigma-Aldrich
Kaliumchlorid, powder, BioReagent, suitable for cell culture, suitable for insect cell culture, ≥99.0%
Sigma-Aldrich
Kaliumchlorid, puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E508, 99-100.5% (AT), ≤0.0001% Al
Sigma-Aldrich
Glutaraldehyd -Lösung, Grade I, 25% in H2O, specially purified for use as an electron microscopy fixative
Sigma-Aldrich
Ethylendiamintetraessigsäure, anhydrous, crystalline, BioReagent, suitable for cell culture
Sigma-Aldrich
Ethylendiamintetraessigsäure -Lösung, 0.02% in DPBS (0.5 mM), sterile-filtered, BioReagent, suitable for cell culture