Supercritical CO_2 extraction of safflower essential oil
- VernacularTitle:超临界CO_2萃取红花挥发油的实验研究
- Author:
Xiaojin HAN
;
Rong ZHANG
;
Jicheng BI
- Publication Type:Journal Article
- Keywords:
supercritical CO_2 extraction;
safflower;
essential oil;
GC-MS analysis
- From:
Chinese Traditional Patent Medicine
1992;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
AIM:To obtain the fine safflower essential oil by supercritical CO_2 extraction(SFE-CO_2). METHODS: The effects of pressure, temperature and CO_2 flow rate on supercritical CO_2 extraction were studied and the safflower essential oil was analysed by GC-MS. Both yield and components of essential oil obtained by SFE-CO_2 were compared with that obtained from hydrodistillation and microwave-assisted extraction. RESULTS: The optimal conditions were determined: the pressure of 9 MPa, the temperature was at 40 ℃ and the CO_2 flow rate was 4 kg/h. The yield of essential oil by SFE-CO_2 was higher than that of hydrodistillation, the qualities of both kinds of essential oil were fine, as analysed by GC-MS. The yield of essential oil by microwave extraction was the highest, but its quality was worse than those obtained by using other methods. CONCLUSION: The SFE-CO_2 is a good method for extraction of safflower essential oils.
