Optimization and validation of analytical methods for the simultaneous determination of antioxidants: Application to the analysis of tomato sauces.

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Issue date
2014
Author
Motilva Casado, Mª José
Macià i Puig, Ma Alba
Romero Fabregat, Mª Paz
Labrador, Agustín
Domínguez, Alba
Peiró, Lluís
Suggested citation
Motilva Casado, Mª José; Macià i Puig, Ma Alba; Romero Fabregat, Mª Paz; Labrador, Agustín; Domínguez, Alba; Peiró, Lluís; . (2014) . Optimization and validation of analytical methods for the simultaneous determination of antioxidants: Application to the analysis of tomato sauces.. Food Chemistry, 2014, vol. 163, p. 234-243. https://doi.org/10.1016/j.foodchem.2014.04.096.
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Abstract
In the present study, simultaneous extraction of natural antioxidants (phenols and carotenoids) in complex matrices, such as tomato sauces, is presented. The tomato sauce antioxidant compounds studied were the phenolics hydroxytyrosol, from virgin olive oil, quercetin and its derivatives, from onions,
and quercetin-rutinoside as well as the carotenoid, lycopene (cis andtrans), from tomatoes. These antioxidant compounds were extracted simultaneously with n-hexane/acetone/ethanol (50/25/25, v/v/v).The phenolics were analysed by ultra-performance liquid chromatography coupled with tandem mass spectrometry (UPLC<br>MS/MS), and lycopene (cis- andtrans-forms) was analysed using high-performanceliquid chromatography coupled to a diode array detector (HPLC-DAD). After studying the parameters of these methods, they were applied to the analysis of virgin olive oil, fresh onion, tomato concentrate and tomato powder, and commercial five tomato sauces. Subsequently, the results obtained in our laboratory were compared with those from the Gallina Blanca Star Group laboratory
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http://hdl.handle.net/10459.1/48119
DOI
https://doi.org/10.1016/j.foodchem.2014.04.096
Is part of
Food Chemistry, 2014, vol. 163, p. 234-243
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