| 微波辅助提取柚皮精油的研究 |
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| 引用本文： | 龚盛昭,程江,杨卓如.微波辅助提取柚皮精油的研究[J].林产化学与工业,2005,25(4):67-70. |
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| 作者姓名： | 龚盛昭 程江 杨卓如 |
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| 作者单位： | 华南理工大学,化工与能源学院,广东,广州,510640;广东轻工职业技术学院轻化工程系,广东,广州,510300;华南理工大学,化工与能源学院,广东,广州,510640 |
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| 基金项目： | 广东省佛山市产学研专项资金资助项目（2003A336） |
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| 摘 要： | 进行了微波辅助提取柚皮精油的实验。结果表明，石油醚是微波辅助提取柚皮精油的最佳溶剂，液料质量比、物料含水率、粒度、微波功率等因素对微波辅助提取柚皮精油有较大影响。通过实验得到了柚皮精油提取的最佳工艺条件：物料粒度60目，物料含水率7．4％，总液料质量比14：1，微波功率300w，提取两次，每次微波辐射时间3min。提取液进行真空浓缩至不再有溶剂蒸出，得精油粗产品。往精油粗产品中加入乙醇溶解，放入～15℃冰箱中冷冻48h，离心分离去除树脂状物质，过滤，滤液进行真空浓缩后，即得精油，产率约2．09％，精油纯度99．0％。与传统的直接加热提取法相比，微波辅助提取法所用时间仅为直接加热提取法的1／20。
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| 关 键 词： | 微波辅助提取 精油 沙田柚皮 |
| 文章编号： | 0253-2417（2005）04-0067-04 |
| 收稿时间： | 11 8 2004 12:00AM |
| 修稿时间： | 2004-11-08 |
MICROWAVE-ASSISTED EXTRACTION OF ESSENTIAL OIL FROM CITRUS GRANDIS PEEL |
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| GONG Sheng-zhao,CHENG Jiang,YANG Zhuo-ru.MICROWAVE-ASSISTED EXTRACTION OF ESSENTIAL OIL FROM CITRUS GRANDIS PEEL[J].Chemistry & Industry of Forest Products,2005,25(4):67-70. |
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| Authors: | GONG Sheng-zhao CHENG Jiang YANG Zhuo-ru |
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| Abstract: | Microwave-assisted extraction(MAE) was used to extract essential oil (EO) from pomelo(Citrus grandis (L.)Osbeck) peel (CGP). Results show that petroleum ether is an optimal solvent and the extraction was affected mainly by stock mass ratio, microwave power, water content and granularity of material. The optimal conditions were obtained. Materials with granularity of 60 mesh and water content of around 7.4 % are suitablefor extraction. Total solvent-material mass ratio is 14: 1. Extraction had to be performed twice with microwave irradiation (300 W) for 3 min each time. Crude EO was obtained after the extracted liquor was concentrated under vacuum. Crude EO was then dissolved with ethanol, frozen at - 15 ℃ for 48 h, and centrifugally separated and filtered to get rid of impurities. The final product EO with yield of 2.09 % and purity of 99.0 % was then obtained after distilling the liquor under vacuum. Compared with direct-heating extraction (DHE), MAE reduced the extracting time up to 1/20. |
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| Keywords: | microwave-assisted extraction essential oil Citrus grandis (L ) Osbeck peels |
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