Supercritical CO2 fluid extraction of Rosmarinus officinalis and capability of extracts eliminate OH radical
Zhang, C.; Li, J.-C.; Zhang, D.-L.; Feng, Y.-H.; Zhang, Y.-N.; Chen, S.-L.
Zhongguo Zhong Yao Za Zhi 33(9): 1007-1009
2008
ISSN/ISBN: 1001-5302 PMID: 18652344 Document Number: 622040
Supercritical CO2 fluid extraction process of antioxidation active components from Rosmarinus officinalis was studied. A new extraction process of components extracted from R. officinalis by supercritical CO2 fluid extraction (SFE-CO2 ) was studied in detail. The capability of that the extract eliminate *OH radical was tested by electron paramagnetic resonance (EPR) technique and spin catch technique. With free radical clearance as index, by range and variance analysis, the optimum extraction process conditions were: keeping pressure at 30 MPa and temperature at 75 degrees C for 1 h, in the same time adding alcohol 0.30 mL x g(-1).