广西林业科学2018，Vol.47Issue(1)：89-93,5.
蒸馏时间对柠檬桉叶得油率及主成分的影响
Effect of Distillation Time on Main Chemical Composition and Oil Yield of Eucalyptus citriodora Leaves
摘要
Abstract
Distillation time was one of the important factors to affect the oil yield and main chemical composi-tions of Eucalyptus citriodora.The qualitative and quantitative analysis of different distillation time of volatile oil from 25-year-old E.citriodora were conducted by gas chromatography and gas chromatography-mass spec-trometry(CG-MS). Results showed that when the distillation time was 2.0 h,the oil yield(fresh leaves) was 1.220% and 42 compounds were identified.The main compounds which the relative content was more than 1.000% were citronellal(58.188%),citronellol(12.959%),neoisopulegol(8.959%),citronellyl acetate (7.686%),p-menthane-3,8-diol(3.062%),1,8-cineole(1.665%),and isopulegol(1.005%). Those 6 compounds accounted for 93.524% of citriodora oils. GC results of volatile oil from 15-year-old E. citriodora indicated that when the steam consumption was 90 mL/min and the solid-liquid ratio was 1:1.8,the oil yield was 1.156% in 1.0 h.And the content of citronellal in volatile oil was 79.966%,the total content of neoisopulegol and isopulegol was 9.313%. The characteristic components of the citriodora oil met the GB/T 22179-2008 standard.The volatile oil became less with the extension of distillation time.It was suggested that the distillation time should be 1.0 h for the good quality of citriodora oil in order to reduce energy consumption and meet the national standard.关键词
柠檬桉油/香茅醛/蒸油时间/蒸汽量/料液比Key words
citriodora oil/citronellal/distillation time/steam consumption/solid-liquid ratio分类
化学化工引用本文复制引用
谷瑶,周丽珠,陈健波,梁忠云,李桂珍,邓紫宇,孟中磊..蒸馏时间对柠檬桉叶得油率及主成分的影响[J].广西林业科学,2018,47(1):89-93,5.基金项目
广西林科院基本科研业务费专项(林科201818号 （）
林科201821号) （）
