Abstract
In current study, a novel strategy, cyclodextrin-based liquid-phase pulsed discharge (CLPD), was proposed to extract flavonoids from tangerine pericarp in order to improve the extraction efficiency of target components. The maximum flavonoids yield (17.78 ± 0.23 mg/g) of CLPD was achieved under the optimized conditions: 15 mmol/L of HP-β-cyclodextrin solvent, 42 mL/g liquid-solid ratio, 5.9 kV peak-voltage and 4.2 min duration, which was more than those of liquid-phase pulsed discharge (LPD) (15.23 ± 0.34 mg/g) and warm maceration extraction (WME) (14.1 ± 0.26 mg/g). HPLC analysis indicated that the extracts of CLPD had similar flavonoids compositions to the extracts of LPD and WME. Besides, DPPH scavenging ability test and stability study of the extracts of CLPD, LPD and WME proved that CLPD extracts had better antioxidant ability and storage stability. Therefore, this study provided an effective and promising strategy for extracting flavonoids from tangerine pericarp.
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