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Appl. Sci. 2017, 7(4), 321; doi:10.3390/app7040321

Optimization of Subcritical Water Extraction of Resveratrol from Grape Seeds by Response Surface Methodology

Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
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Received: 15 January 2017 / Revised: 16 March 2017 / Accepted: 21 March 2017 / Published: 24 March 2017
(This article belongs to the Section Chemistry)
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Abstract

The subcritical water extraction (SWE) is a high-efficiency and environment-friendly extraction method. The extraction of resveratrol (RES) of grape seeds obtained from the wine production process was proposed using subcritical water extraction (SWE). The effects of different extraction process parameters on RES yield were investigated by single factors. Extraction optimization was conducted using response surface methodology (RSM). Extraction temperature was proven to be the most significant factor influencing RES yield. The optimal conditions was as follows: extraction pressure of 1.02 MPa, temperature of 152.32 °C, time of 24.89 min, and a solid/solvent ratio of 1:15 g/mL. Under these optimal conditions, the predicted extraction RES yield was 6.90 μg/g and the recoveries was up to 91.98%. Compared to other previous studies, this method required less pollution and less treatment time to extract RES from grape seeds. From these results, added economic value to this agroindustrial residue is proposed using environmentally friendly extraction techniques. View Full-Text
Keywords: grape seeds; resveratrol (RES); subcritical water extraction (SWE); response surface methodology (RSM) grape seeds; resveratrol (RES); subcritical water extraction (SWE); response surface methodology (RSM)
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MDPI and ACS Style

Tian, Y.; Wang, Y.; Ma, Y.; Zhu, P.; He, J.; Lei, J. Optimization of Subcritical Water Extraction of Resveratrol from Grape Seeds by Response Surface Methodology. Appl. Sci. 2017, 7, 321.

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