摘要:来自新疆的薰衣草精油1号品种和2号薰衣草精油品种,采用气相色谱-质谱联用(GC-MS)和气相色谱-稀释频率分析法(GC-O)对薰衣草精油中的挥发性成分进行分析鉴定。得到薰衣草精油中含有80种挥发性成分,通过GC-O-AEDA法能够嗅闻到的香气化合物有31种,其中萜烯类物质11种、醇类物质10种、酯类物质6种、醛类物质2种、酮类物质1种、其他化合物1种。通过单点校正方法(类似标准加入法)去计算相对校正因子,从而来计算薰衣草精油中的挥发性物质浓度。最后通过数据分析得到薰衣草精油中的特征香气成分有芳樟醇、乙酸芳樟酯和β-月桂烯。36086
毕业论文关键词:薰衣草精油;气相色谱-质谱(GC-MS);气相色谱-稀释频率分析(GC-O);单点校正;
Study on characteristic aroma components of lavender essential oils
Abstract: Two lavender essential oils,Xinjiang lavender No.1 and Xinjiang lavender No.2,were analyzed both by using gas chromatography-mass spectrometry (GC-MS) and gas chromatography - diluted frequency analysis (GC-O) .Eighty volatile components of lavender essential oils were analyzed and identified by GC-MS. Thirty-one aroma compounds of lavender essential oils were identified by GC-O-AEDA, among which eleven terpenes, ten alcohols, six esters, two aldehydes, one ketone as well as one other compound. Through using “single point correction method” similar to the standard addition method,these aroma compounds from lavender essential oils were calculated.Quantitive data of the identified aroma compounds were obtained from calculating their relative quantitative correction factors. Finally, the characteristic aroma components of Xinjiang lavender essential oils are linalool, linalyl acetate and β- myrcene,respectively.
KeyWords: Lavender essential oils;Gas chromatography-mass spectrometry(GC-MS);Gas chromatography-olfactometry(GC-O);Aroma reconstitution experiments;Omission tests
目录
1 绪论 1
1.1 薰衣草及其精油的研究概述 1
1.1.1 薰衣草的概述以及品种 1
1.1.2 薰衣草精油的研究概述 1
1.2 气相色谱-质谱联用仪(GC-MS) 3
1.2.1 气相色谱-质谱的基本原理 3
1.2.2 气相色谱-质谱的应用领域及前景 4
1.3 气相色谱-嗅觉测量法(GC-O) 4
1.3.1 GC-O检测技术 4
1.3.2 GC-O的应用 6
1.4 本课题研究意义和内容 6
1.4.1 研究意义 6
1.4.2 研究内容 6
2 材料和方法 7
2.1 原料、试剂和仪器设备 7
2.1.1 实验原料 7
2.1.3 实验仪器设备及材料 8
2.2 GC-MS和GC-O 8
2.2.1 气相色谱-质谱联用(GC-MS) 8
2.2.2 气相色谱-嗅觉测量法(GC-O) 9
2.3 GC-MS鉴定出的化合物的半定量 9
2.4 挥发性香气化合物的鉴定 9
2.5 挥发性香气化合物的定量方法 10
3 结果与讨论 11
3.1 挥发性香气化合物的鉴定 11
3.1.1 GC-MS的鉴定结果 11
3.1.2 GC-O香气成分分析结果 16
3.2 挥发性香气化合物的定量分析 18
4 结论 21
4.1 GC-MS和GC-O定性分析结果 21
4.2 薰衣草精油挥发性香气成分的定量结果 22
4.3 薰衣草精油中的特征香气成分的确定 22 薰衣草精油特征香气成分研究:http://www.youerw.com/huaxue/lunwen_34408.html