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食品研究与开发:2019,40(6):105-110
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超临界流体工艺萃取茶叶香气成分
(1.江西师范大学生命科学学院,江西南昌330022;2.江西省桑蚕茶叶研究所,江西南昌330202)
Supercritical Fluid Technology Extraction of Tea Aroma Components
(1.College of Life Science,Jiangxi Normal University,Nanchang 330022,Jiangxi,China;2.Jiangxi Silkworm Tea Research Institute,Nanchang 330202,Jiangxi,China)
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投稿时间:2018-08-08    
中文摘要: 将前岭银毫茶作为样本,采用正交试验设计,对CO2超临界流体萃取(supercritical fluid extraction,SFE)茶叶精油工艺条件进行研究,最佳萃取组合为:压力25 MPa、温度45℃、CO2流量8 L/h、时间4 h。在此条件下,最大产率为2.57%。各因素对萃取率的影响主次为:时间>压力>温度>流量。通过对萃取的精油进行气相色谱-质谱分析(gas chromatography-mass spectrometric analysis,GC-MS)鉴定以及感官评定,CO2SFE可将茶叶主要香气物质萃取出来,萃取的茶叶精油与原茶香味一致,有较高的产率,可以用于工业制备。
Abstract:Taking Qianlingyinhao tea as samples,the condition of CO2supercritical fluid extraction of tea essentialoilwasmodifiedbyorthogonaltestdesignandthemodifyingconditionwasfound (25 MPa,45℃,8 L/h,4 h).The highest yield of extracted tea essential oil was 2.57%in the optimal condition.The influence of each element of the condition was as fallows:time>pressure>temperature>flowing.The extracted oil was analyzed by gas chromatography-mass spectrometry and sensory evaluation.The main aroma constituents in tea was extracted by CO2SFE method which could keep the original aroma of that tea with the higher yield.It could be used in industrial preparation.
文章编号:201906019     中图分类号:    文献标志码:
基金项目:江西省科技计划(20161BBF60067)
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