TY - JOUR T1 - Various extraction methods for obtaining stilbenes from grape cane of Vitis vinifera L. AU - Soural,Ivo, AU - Vrchotová,Naděžda, AU - Tříska,Jan, AU - Balík,Josef, AU - Horník,Štěpán, AU - Cuřínová,Petra, AU - Sýkora,Jan, Y1 - 2015/04/08/ PY - 2015/02/16/received PY - 2015/03/30/revised PY - 2015/04/02/accepted PY - 2015/4/10/entrez PY - 2015/4/10/pubmed PY - 2016/1/13/medline SP - 6093 EP - 112 JF - Molecules (Basel, Switzerland) JO - Molecules VL - 20 IS - 4 N2 - Grape cane, leaves and grape marc are waste products from viticulture, which can be used to obtain secondary stilbene derivatives with high antioxidant value. The presented work compares several extraction methods: maceration at laboratory temperature, extraction at elevated temperature, fluidized-bed extraction, Soxhlet extraction, microwave-assisted extraction, and accelerated solvent extraction. To obtain trans-resveratrol, trans-ε-viniferin and r2-viniferin from grape cane of the V. vinifera variety Cabernet Moravia, various conditions were studied: different solvents, using powdered versus cut cane material, different extraction times, and one-step or multiple extractions. The largest concentrations found were 6030 ± 680 µg/g dry weight (d.w.) for trans-resveratrol, 2260 ± 90 µg/g d.w. for trans-ε-viniferin, and 510 ± 40 µg/g d.w. for r2-viniferin. The highest amounts of stilbenes (8500 ± 1100 µg/g d.w.) were obtained using accelerated solvent extraction in methanol. SN - 1420-3049 UR - https://www.unboundmedicine.com/medline/citation/25856060/Various_extraction_methods_for_obtaining_stilbenes_from_grape_cane_of_Vitis_vinifera_L_ DB - PRIME DP - Unbound Medicine ER -