Optimization of supercritical CO2 extraction of plantaginis semen oil by response surface methodology and studies on its antioxidant activity / 中国中药杂志
China Journal of Chinese Materia Medica
; (24): 3253-3257, 2011.
Article
in Chinese
| WPRIM (Western Pacific)
| ID: wpr-274390
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>The optimum conditions of SFE-CO2 extraction of Plantaginis Semen oil (SPO), the composition of SPO and its antioxidant activities of SPO were all investigated in this paper.</p><p><b>METHOD</b>Response surface method (RSM) was used to establish the mathematical model of SFE-CO2 extraction of SPO to obtain the optimum conditions based on Single factor experiments. Fatty acid compositions and contents of SPO were tested by GC-MS, and antioxidant activities of SPO were studied by DPPH and ABTS free radical elimination method.</p><p><b>RESULT</b>The optimum conditions obtained through RSM analysis were as follows extraction tempreture 70 degrees C, extraction pressure 30 MPa, extraction time 120 min and flow rate 30 L x h(-1). Under the optimal condition, predicted value was 35.91%, while the experimental value was 35.07%. The experimental values agree with the predicted from the regression model with a relative error less than 5%. The main components of SPO were 9,12,15-octadecatrienoic acid, 8,11-octadecadienoic acid, octadecanoic acid and hexadecanoic acid. Most of the fatty acids were polyunsaturated fatty ones, whose quantities were obtained more than 88%. The IC50DPPH and IC50ABTS were 1.13, 3.57 g x L(-1) respectively in DPPH and ABTS assay.</p><p><b>CONCLUSION</b>Optimization of the extraction process by RSM of SPO is convenient and feasible. SPO has good antioxidant activity and is worth to develop for application.</p>
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Plant Oils
/
Carbon Dioxide
/
Chemistry
/
Cupressaceae
/
Chromatography, Supercritical Fluid
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Gas Chromatography-Mass Spectrometry
/
Methods
/
Antioxidants
Type of study:
Prognostic study
Language:
Chinese
Journal:
China Journal of Chinese Materia Medica
Year:
2011
Document type:
Article