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Extraction Papers

Impact of extraction parameters on chemical composition and antioxidant activity of bioactive compounds from Chinese licorice (Glycyrrhiza uralensis Fisch.) by subcritical water

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Pages 609-621 | Received 13 Feb 2015, Accepted 03 Nov 2015, Published online: 21 Feb 2016
 

ABSTRACT

An efficient extraction of bioactive compounds from licorice was developed using subcritical water. This study aimed at investigating the impacts of parameters on the composition and antioxidant property of the extract. It was found that total phenolics (TP), total flavonoids (TF), glycyrrhizic acid (GL), and antioxidant activity (TAA) were significantly affected by the time, pH, and temperature. The parameters of 20 min and pH 8 were preferred. The maximum values were obtained at 200°C (TF, TP), and 140°C (GL). At 280°C, TAA reached the highest level. Subcritical water extraction was confirmed to be an environmentally-friendly and efficient method.

Additional information

Funding

The authors acknowledge financial support from National Science-technology Support Plan Projects for the12th five-year plan (No.2011BAI07B02-7).

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