柚子皮挥发油提取及成分测定_new重点解读.doc

本 科 毕 业 设 计 (论 文) 挥发油提取及成分测定 The extraction and content determination of volatile oil from Pomelo peel 学 院： 化学工程学院 专业班级： 化学工程与工艺 DZ化工 学生姓名： 学 号： 201 指导教师： 夏海涛（教授） 201年6月 毕业设计（论文）中文摘要 挥发油提取及成分测定 摘 要： 关键词：；挥发油；单因素；成分； 毕业设计（论文）外文摘要 The extraction and content determination of volatile oil fPomelo peel Abstract: The experiment of extracting the volatile oil from Pomelo peel is conducted to study the factors affecting the extraction of volatile oil with steam distillation using the normal temperature extraction technology. In the experiment, distilled water is used as extraction reagent. The results show that, the extraction duration is 12h, Extraction time is 8h, the ratio of material to water is 1:26, is the best extraction conditions of the experiment. This essay also determines the composition of the volatile oil and its chemical properties are analyzed by GC-MS spectrometry. 62 peaks were isolated from the the volatile oil of artemisia anethifolia, and 31 compounds were identified, accounting for 50% of the ion peak. Their chemical constituents and relative contents were analyzed by GC- MS method. 62components were determined and 31compounds were identified in them,and they were 50. 0% ofthe total volatile oil.The main constituents are ?-pinene, 4, 4A, 5, 6, 7, 8-hexahydro-4, 4A-dimethyl-6 -( 1-methylethylidene) -( 4R-cis) -2( 3H) -naphthalenone, linalool oxide, ( E, E) -3, 7, 11,15- tetramethyl-1, 6, 10, 14-Hexadecatetraen-3-ol. Key words: Crateva unilocularis; Univariate; Ingredient ; GC-MC 目 录 1引言 1 1.1的概况 1.2挥发油的概况……………………………………………………………………….2 1.3 实验方法………………………………………………………………………………..…..… 3 2 挥发油提取实验 4 2.1 研究对象 4 2.2 仪器试剂 4 2.3 样品采集 4 2.4 空白对照组的测定 2.5 样品预处理 2.6 柚子皮中挥发油的提取步骤及含量测定 2.7 单因素实验 3 挥发油成分测定 3.1 仪器及测定条件 3.2 测定结果…………………………………………………………………………..1 3.2 样品分析…………………………………………………………………………..1 3.3面积百分比报告……..