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

Abstract

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-ε-viniferin, and r2-viniferin were determined by high-performance liquid chromatography. The study included three blue grape varieties of Vitis vinifera L. (Cabernet Moravia, Blaufränkisch, 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-ε-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.

Metabolite profiling during graft union formation reveals the reprogramming of primary metabolism and the induction of stilbene synthesis at the graft interface in grapevine

“…The three genotypes of grapevine studied, CS, RG and 1103P, had different stilbene profiles in the rootstock wood tissues, genotypic variation in stilbene concentration has been previously reported in different cultivars of V. vinifera [43,44] and in the roots of different rootstock genotypes [45]. Trans -ε-viniferin is the main stilbene reported in canes for all cultivars [39, 43, 44], with amounts between 0.43–2.30 g kg − 1 , which is consistent with our results.…”

Viticultural wood waste as a source of polyphenols of interest: Opportunities and perspectives through conventional and emerging extraction methods

“…Moreover, trans--viniferin standard being expensive, the ways for its quantification are numerous. Some authors expressed Vf concentrations in term of Rsv equivalents, others used Vf purified from vines and others used commercial standards (Karacabey et al, 2012;Vergara et al, 2012;Pawlus et al, 2013;Tříska et al, 2017). Lambert et al (2013) and Gorena et al (2014) also warned about this point in their work.…”

Role of Resveratrol in Regulating Cutaneous Functions

“…Other factors, such as cultivation sites and nitrogen availability, can also influence the resveratrol content in plants [35,62,64,65]. For example, the trans-resveratrol content in V. vinifera grape cane grown in Yantai is lower than that grown in Yangling, China (755 vs. 938 mg/kg fresh weight) [62].…”

“…Variation of resveratrol content in plants is likely due to different environment/weather conditions [40][41][42][43]64] and chemical compositions of soils [45,66]. In addition, processing methods of foods and beverages can affect resveratrol content.…”