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Molecules 2016, 21(6), 784;

Ultrasound-Assisted Extraction of Stilbenes from Grape Canes

IFAPA Rancho de la Merced, Carretera de Trebujena, Km. 2.2, Apdo. 589, Jerez de la Frontera 11471, Spain
Departamento de Química Analítica, IVAGRO, Universidad de Cadiz, Apdo. 40, Puerto Real 11510, Spain
Author to whom correspondence should be addressed.
Academic Editor: Gregory Chatel
Received: 26 May 2016 / Revised: 8 June 2016 / Accepted: 12 June 2016 / Published: 16 June 2016
(This article belongs to the Special Issue Sonochemistry and Green Chemistry Applications)
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An analytical ultrasound-assisted extraction (UAE) method has been optimized and validated for the rapid extraction of stilbenes from grape canes. The influence of sample pre-treatment (oven or freeze-drying) and several extraction variables (solvent, sample-solvent ratio and extraction time between others) on the extraction process were analyzed. The new method allowed the main stilbenes in grape canes to be extracted in just 10 min, with an extraction temperature of 75 °C and 60% ethanol in water as the extraction solvent. Validation of the extraction method was based on analytical properties. The resulting RSDs (n = 5) for interday/intraday precision were less than 10%. Furthermore, the method was successfully applied in the analysis of 20 different grape cane samples. The result showed that grape cane byproducts are potentially sources of bioactive compounds of interest for pharmaceutical and food industries. View Full-Text
Keywords: trans-resveratrol; stilbenes; ultrasound; extraction; HPLC; grape canes trans-resveratrol; stilbenes; ultrasound; extraction; HPLC; grape canes

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Piñeiro, Z.; Marrufo-Curtido, A.; Serrano, M.J.; Palma, M. Ultrasound-Assisted Extraction of Stilbenes from Grape Canes. Molecules 2016, 21, 784.

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