Variability in the content of trans-resveratrol, trans-ε-viniferin and r2-viniferin in grape cane of seven Vitis vinifera L. varieties during a three-year study

0477071 - ÚVGZ 2018 RIV CH eng J - Článek v odborném periodiku
Tříska, Jan - Vrchotová, Naděžda - Balík, J. - Soural, I. - Sotolář, R.
Variability in the content of trans-resveratrol, trans-ε-viniferin and r2-viniferin in grape cane of seven Vitis vinifera L. varieties during a three-year study.
Molecules. Roč. 22, č. 6 (2017), č. článku 928. E-ISSN 1420-3049
Grant CEP: GA MŠMT(CZ) LO1415; GA MŠMT(CZ) LD14038
Výzkumná infrastruktura: CzeCOS II - 90061
Institucionální podpora: RVO:67179843
Klíčová slova: stilbenes * Vitis vinifera L * grape cane * Moravian wine region
Obor OECD: Environmental sciences (social aspects to be 5.7)
Impakt faktor: 3.098, rok: 2017

Grape canes are a waste product from viticulture that show potential as an industrially extractable source of stilbenes, which are valuable for medical and other purposes. In this work, grape canes collected in three consecutive years (2014-2016) at six different places in South Moravia, Czech Republic were extracted, and the contents of trans-resveratrol, trans-epsilon-viniferin, and r2-viniferin were determined by high-performance liquid chromatography. The study included three blue grape varieties of Vitis vinifera L. (Cabernet Moravia, Blaufrankisch, and Piwi variety Laurot) and four white grape varieties (Chardonnay, Green Veltliner, Piwi variety Hibernal, and Piwi variety Malverina). From the viewpoint of producing extracts with high stilbenes content, the Hibernal variety is clearly the best. The mean amounts of the stilbenes for this variety at all localities and for all three years were 4.99 g/kg for trans-resveratrol, 3.24 g/kg for trans-epsilon-viniferin, and 1.73 g/kg for r2-viniferin. The influence of vintage, locality, and variety on the amounts of stilbenes was studied using PCA analysis. In contrast to expectations, there was no strong impact of locality on stilbenes content. The differences were varietal for most varieties, regardless of the area of cultivation. Laurot and Hibernal varieties did differ significantly in that respect, however, as they exhibited clear dependence on location.
Trvalý link: http://hdl.handle.net/11104/0273471