Extraction of Dittany (Origanum dictamnus) using supercritical CO2 and liquid solvent |
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| Affiliation: | 1. School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China;2. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;3. School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China;1. Collage of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, Henan 450001, PR China;2. Collage of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450001, PR China |
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| Abstract: | Different extraction processes of dittany (Origanum dictamnus) for the recovery of extracts enriched with bioactive components were examined in this work. More specifically, hydrodistillation, extraction with a liquid organic solvent, supercritical CO2 extraction, as well as a combination of supercritical and liquid extraction were applied in order to recover improved extracts with respect to their antioxidant activity. The latter was determined by using a free radical method (DPPH ). The antioxidant activities of the extracts obtained were compared with those of carvacrol, a main component of dittany, and BHT, a common synthetic antioxidant. It is shown that the combination of the conventional liquid extraction with supercritical extraction could be a promising alternative process for the recovery of extracts enriched with bioactive compounds. |
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