摘要
[目的]更好地提取生姜中的风味物质。[方法]采用水蒸气蒸馏法、有机溶剂浸提法和超临界CO2萃取法提取生姜中的风味物质,对所得产物进行HPLC和GC-MS分析。[结果]水蒸气法提取的姜精油为浅黄,折光指数（20℃）1.491～1.497,密度d^200.855～0.890g/ml,得率0.7%～1.2%,主要成分为单萜、单萜醇、醛、酯等含氧衍生物和倍半萜。超临界CO2萃取法的适宜工艺为：萃取时间80min,萃取温度35℃,萃取压力15MPa,所得姜精油为稠状深黄色,折光指数（20℃）1.490～1.512,密度d^200.950～0.975g/ml,主要包括姜烯、金合欢烯、β-倍半水芹烯、β-水芹烯,按面积归一法计算,共占色谱峰的88.29%。有机溶剂浸提法提取率低,杂质多。[结论]超临界CO2萃取法提取物含较多的醇类化合物,更能体现生姜的独特风味。
[Objective]The aim of this study was to extract the flavor substances in ginger better. [Method] Three extraction ways of steam distillation,organic solvent extraction and supercritical CO2 extraction were used to extract the flavor substances in ginger and their products were analyzed by HPLC and GC-MS. [Result] The ginger essential oil extracted by steam distillation method was light yellow and had refractive index of 1.491～1.497 at 20 ℃ ,density d^20 of 0.855～0.890 g/ml and yield of 0.7%～1.2%,with the major components as containing oxygen derivatives such as monoterpene, monoterpenols,aldehyde and ester and sesquiterpene. The optimum process for supercritical CO2 extraction was follows： extracting time of 80 min,extracting temperature of 35 ℃ and extracting press of 15 MPa. The gained ginger essential oil was thick and dark yellow and had refractive index of 1.490～1.512 at 20 ℃ ,density d^20 of 0.950～0.975 g/ml and their the major components were zingiberene,farnesene,β-sesquiphellandrene,β-phellandrene,accounting for 88.29% of chromatographic peak counted by area normalization method. The organic solvent extraction was low in extracting yield and more impurity in extracted product. [Conclusion] The extract by supercritical CO2 extraction method contained more alcohol compounds,and showed the ginger unique flavor better.
出处
《安徽农业科学》
CAS
北大核心
2008年第21期8878-8880,共3页
Journal of Anhui Agricultural Sciences
基金
莱芜市科技局科技计划资助项目(200720-1)
关键词
姜精油
水蒸气蒸馏
超临界萃取
有机溶剂浸提
GC-MS分析
Essential oil of ginger
Steam distillation
Supercritical CO2 extraction
Organic solvent extraction
GC-MS analysis
