State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
Nat Prod Res. 2011 Jan;25(2):85-92. doi: 10.1080/14786410701592778.
Microwave-assisted extraction (MAE) was applied in the extraction of phenolics from Canarium album L. Effects of various conditions including the solvent, solvent to material ratio, microwave power and irradiation time on extraction yield of phenolics were investigated. In terms of the optimal conditions of MAE, it was concluded that 70% (v/v) of ethanol was the proper extraction solvent, the solvent to material ratio was 10 : 1 (mL : g), and the microwave power and irradiation time were 600 W and 15 s, respectively. Compared with normal stirring extraction and ultrasound-assisted extraction, the MAE of phenolics from C. album L. was more time efficient and gave a high extraction rate. More than 1.2% extraction yield was achieved with MAE, and the purity of the phenolics in the extract product was up to 25%. In addition, by ultraviolet-visible (UV) spectrometry and electrospray ionised mass spectrometry (ESI/MS), the main phenolic compound in the extract product was identified as gallic acid.
微波辅助提取（MAE）被应用于从橄榄（Canarium album L.）中提取酚类物质。考察了不同条件（包括溶剂、溶剂与物料比、微波功率和辐射时间）对酚类物质提取率的影响。根据 MAE 的最佳条件，得出结论：70%（v/v）乙醇是合适的提取溶剂，溶剂与物料比为 10:1（mL：g），微波功率和辐射时间分别为 600 W 和 15 s。与常规搅拌提取和超声辅助提取相比，MAE 从橄榄中提取酚类物质更高效，提取率更高。MAE 的提取率超过 1.2%，提取物中酚类物质的纯度高达 25%。此外，通过紫外-可见（UV）光谱和电喷雾电离质谱（ESI/MS），鉴定出提取物中主要的酚类化合物为没食子酸。
