期刊论文

Optimization of supercritical CO_2 fluid extraction of essential oil from jasmine buds by response surface methodology and effect of antioxidant activity

中文

天然产物研究与开发

1001-6880

2019

31

7

1220-1229

10.16333/j.1001-6880.2019.7.015

2018年湖南省研究生科研创新项目(CX2018B420).

本校为第一机构

为研究超临界CO_2萃取茉莉花蕾获得精油的最佳工艺及抗氧化活性,实现资源的综合利用。实验考察了夹带剂用量、原料颗粒大小、萃取压力、萃取温度和动态萃取时间对茉莉精油产率的影响,进一步以响应面实验设计优化挥发油的提取工艺参数,以GC-MS分析挥发油组成及相对含量,并测定精油清除DPPH自由基及还原铁离子能力。结果表明,最佳工艺参数为:夹带剂乙醇用量为0.2 mL/g,花粉颗粒为40目,萃取压力20 MPa,萃取温度46 ℃,动态萃取时间1.6 h。在此条件下茉莉精油的产率为13.67%,远高于同时蒸馏萃取法(2.87%)和超声辅助提取(2.45%)。超临界萃取精油的主要香气成分与茉莉鲜花基本一致,并且具有较好的清除自...

This study was to investigate the optimum extraction conditions of essential oil from jasmine flower buds and antioxidation of the extraction by supercritical CO_2 extraction,and the comprehensive utilization of jasmine flower bud resources was realized.Firstly,the effects of entrainer dosage,raw material particle size,extraction pressure,extraction temperature and dynamic extraction time on the extraction yields of jasmine essential oil were investigated by single-factor experiment combined with central combination design method of Box-Behnken...