Stilbenoid-Enriched Grape Cane Extracts for the Biocontrol of Grapevine Diseases

Postharvest Treatment of Wood Biomass from a Large Collection of European Grape Varieties: Impact on the Selection of Polyphenol-Rich Byproducts

“…29 Other resveratrol oligomers including trimers and tetramers have been less investigated. 8 Compared to previous studies, ampelopsin A concentrations were comparable for Chardonnay and Cot but lower for Gamay, Pinot Noir, and Sauvignon. 18,21 The contents in miyabenol C were always very low in Chardonnay, Gamay, Malbec, Pinot Noir, and Sauvignon as previously reported.…”

“…30 The present list of cultivars contains varieties that were previously investigated, allowing comparisons of polyphenol concentrations for the same variety. 8 We obtained Eresveratrol concentrations in the same range of concentration as previous studies in varieties Cinsault, 29,31 Melon and Semillon, Pinot Noir, and Sauvignon. 22,29,31 E-ε-viniferin levels in Cabernet, Chardonnay, Gamay, Pinot Noir, Riesling, Sauvignon, and Semillon were similar to those reported by previous analyses.…”

“…From this production, 79% of grape canes are used for soil amendment and the resulting unused balance of grape canes is 378 000 tons per year . Interestingly, grapevine woody tissues accumulate in various bioactive polyphenols that could be recovered after green extraction processes including microwave-assisted extraction, ultrasound-assisted extraction, and pressurized solvent extraction. − For these reasons, grape canes have been proposed as a valuable source of polyphenols with interesting health benefits, including antiproliferative effects and anti-inflammatory activities, , and valuable potential in agroecology to produce biocontrol agents with antifungal activities . Moreover, skin whitening properties and activation of cell longevity protein showed the potential of grape cane extracts (GCEs) as natural cosmetic ingredients …”

Variability of Constitutive Stilbenoid Levels and Profiles in Grape Cane (Vitis vinifera L.) Depending upon Variety and Clone, Location in the Vineyard, Pruning Time, and Vintage

“…These findings might be explained by the direct biosynthetic relationship of resveratrol, ε-viniferin, and vitisin B. Both ε-viniferin and vitisin B are produced by sequential dimerization at the expense of resveratrol as suggested before by Billet et al Considering that our results are premised on constitutive stilbenoid levels, it is conceivable that this biosynthetic relationship is modified upon biotic or abiotic stress. We highlight that we did not carry out any study of the expression of the related genes, which will be crucial for any further discussion about the regulatory biosynthetic relationships of the mentioned compounds.…”

Natural Active Ingredients for Poly (Lactic Acid)-Based Materials: State of the Art and Perspectives

“…Extracts from grapevine cane rich in stilbenes and other polyphenols were prepared using different methodologies: maceration in water or ethanol/water at 80 °C allowed high yields that decreased with long extraction times due to the thermal degradation of the compounds [ 114 ]. For large-scale extraction of grapevine cane, other technologies were described, including MAE, UAE, and SFE, which allowed efficient extraction yield for stilbenes; however, considering the yields, costs, and complexity of processes and plants, hydroalcoholic maceration remains a competitive extraction method [ 115 , 116 ]. PLA-based films, useful as sustainable food packaging materials, were produced with a hydroalcoholic grapevine extract obtained by maceration at 80 °C and then characterized for their physical-chemical properties.…”