Comparison of three extraction methods to extract Zanthoxylum oil
- VernacularTitle:三种花椒籽油提取方法的分析与比较
- Author:
Fang LIU
;
Xiu DENG
- Publication Type:Journal Article
- Keywords:
Zanthoxylum oil;
distillation of essential oil;
solvent extraction;
supercritical fluid extraction
- From:
Chinese Traditional Patent Medicine
1992;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
AIM: To extract Zanthoxylum oil from the seeds of Zanthoxylum bungeanum Maxin, and find out a better extraction method and its optimized operating conditions. METHODS: Zanthoxylum oil was extracted by distillation method, solvent extraction and supercritical fluid extraction, respectively. The products gained in each experiment was analyzed by GC after it had been methyl esterified. RESULTS: The yield of Zanthoxylum oil extracted by distillation, solvent extraction and supercritical fluid extraction was 0.88 %, 13.73 % and 13.52 %, respectively, and its content of unsaturated fatty acid 4.50 %, 65.97 %, 74.97 %, respectively. CONCLUSION: Supercritical fluid extraction was the better of the three mehtods, whose optimized operating conditions consisted of 30 MPa pressure, 50 ?C operating temperature and 5 h extraction time.
