Publication details

Influence of UV and Ozonised Water Treatment on Trans-resveratrol Content in Berry Skins and Juices of Franc and Green Veltliner Grapes

Authors

LANDFELD Aleš TŘÍSKA Jan BALÍK Josef STROHALM Jan NOVOTNÁ Pavla VRCHOTOVÁ Naděžda TOTUŠEK Jiří LEFNEROVÁ Danuše HÍC Pavel TOMÁNKOVÁ Eva HALAMA Radek HOUŠKA Milan

Year of publication 2015
Type Article in Periodical
Magazine / Source Czech Journal of Food Sciences
MU Faculty or unit

Faculty of Medicine

Citation
Field Plant production
Keywords grape juices; stilbens content; UV irradiation; ozonisation
Description Grapes from two varieties - Franc (red) and Green Veltliner (white) were processed using UV radiation at selected powers and times. Irradiated grapes were stored for 24, 48, and 72 h at room temperature. A second set of grapes was dipped into ozonised water. We tested the influence of ozone concentration, dipping time, and storage time. All experiments were performed using grapes harvested in 2009, 2010, and 2011. The two treatments were compared relative to trans-resveratrol content in grape skins and juices (prepared from treated grapes).
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