Objective To optimize the microwave-assisted extraction (MAE) process of resveratrol from grape pomace. Methods Single factor experiments involving three technological parameters of extraction time, material-solvent ratio and microwave power were conducted with resveratrol extraction yield as the examining index, and the effects of each parameter on the extraction yield of resveratrol were investigated by orthogonal test methodology. Both range analysis and variance analysis were carried out, and then the optimal extraction process conditions were obtained. Results The optimal conditions of MAE were as follows: extraction time was 70 s, material-solvent ratio was 1:20 (m:V) and microwave power was 600 W, and the yield of resveratrol was up to 0.284%. Compared to ethanol-extracting method, the extraction yield increased 42%. Conclusion The study can provide a reference for reuse and development of grape pomace.
标题：微波辅助提取葡萄皮渣中白藜芦醇的工艺研究
英文标题：Extraction of resveratrol from grape pomace by microwave-assisted extraction method
