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摘要：柑橘类精油作为天然食品添加剂与赋香剂，具有令人愉悦的香气，是天然香精香料中最受欢迎的一大类。为了解决加热条件导致的精油产率低且品质欠佳的问题，本设计利用有机溶剂浸提法和离心分离法提取柚子精油，对影响精油提取率的工艺条件进行全面的分析。利用气相色谱设备对提取出的柚子精油香气成分进行检测。实验结果表明利用离心分离法提取柚子精油的最佳工艺条件：浸泡剂为Ca(OH)2，料液比为1:4.5，Ca(OH)2浓度为3.00%，NaCl浓度为0.20%，精油得率为0.563%。坪山柚精油颜色橙黄，葡萄柚颜色棕黄，香气接近鲜果果香，精油皆透明澄亮。62005
毕业论文关键字：柚子，柚子精油，有机溶剂萃取
The extraction process of grapefruit essential oils
Abstract: Citrus oil as a natural food additive and aromatic agent, has a pleasant aroma, is the most popular category in natural flavors and fragrances. In order to solve the problem of low yield and poor quality caused by heating conditions , this design extracts orange essential oil by solvent extraction method and centrifugal separation method, and researches comprehensive effects of conditions on extraction yield . The GC was used to determinate the aroma composition of the oil. The results showed that the optimal pressing conditions for extraction of grapefruit essential oil is soaking agent was calcium hydroxide, ratio of material to liquid was 1:4.5, and calcium hydroxide solution concentration was 3.00%, sodium chloride was 0.20%,and the yield was 0.563%. The fragrance of the Pingshan shaddock oil is close to fresh fruit and grapefruit essential oil is close to brown，the color of the oil are all glassy orange.
Key Word：grapefruit，grapefruit essential oil，organic solvent extraction
1 前言 1
1.1柚子精油 1
1.3柚子精油应用概况 2
1.4柚子皮精油的提取工艺 2
1.4.1 蒸馏法 3
1.4.2 微波萃取法 3
1.4.3 溶剂浸提法 3
1.4.4 压榨法 3
1.5本课题研究的目的与意义 4
1.6展望 5
2 实验原理与方法 6
2.1实验原理 6
2.1.1有机溶剂萃取 6
2.1.2离心分离 6
2.2 实验方法 7
2.2.1有机溶剂萃取法 7
2.2.2离心分离法 8
3 实验原料、仪器 9
3.1实验原料 9
3.1.1有机溶剂萃取法原料 9
3.1.2离心分离法原料 9
3.2 实验仪器设备 9
3.2.1有机溶剂萃取法仪器设备 9
3.2.2离心分离法仪器设备 9
4 实验内容与步骤 10
4.1有机溶剂萃取法的实验内容与步骤 10
4.2离心分离法的实验内容步骤 10
5 实验结果与讨论