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The optimization of essential oils supercritical CO2 extraction from Lavandula hybrida through static-dynamic steps
Hossein Kamali1, Noushin Aminimoghadamfarouj1, Ebrahim Golmakani2
1Research Center of Natural Products Health, North Khorasan University of Medical Sciences, Bojnurd, Iran.
Aim:
The aim of this study was to examine and evaluate crucial variables in essential oils extraction process from Lavandula hybrida through static-dynamic and semi-continuous techniques using response surface method.
Materials And Methods:
Essential oil components were extracted from Lavandula hybrida (Lavandin) flowers using supercritical carbon dioxide via static-dynamic steps (SDS) procedure, and semi-continuous (SC) technique.
Results:
Using response surface method the optimum extraction yield (4.768%) was obtained via SDS at 108.7 bar, 48.5°C, 120 min (static: 8×15), 24 min (dynamic: 8×3 min) in contrast to the 4.620% extraction yield for the SC at 111.6 bar, 49.2°C, 14 min (static), 121.1 min (dynamic).
Conclusion:
The results indicated that a substantial reduction (81.56%) solvent usage (kg CO2/g oil) is observed in the SDS method versus the conventional SC method.
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