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Simultaneous Optimization of Ultrasound-Assisted Extraction for Flavonoids and Antioxidant Activity of Using Response Surface Methodology (RSM)

Overview
Journal Molecules
Publisher MDPI
Specialty Biology
Date 2019 Sep 27
PMID 31554203
Citations 18
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Abstract

Koidzumi (), as a Japanese edible herbal plant, enjoys a variety of biological activities due to the presence of numerous active compounds, especially flavonoids. This study aims for the optimization of ultrasound-assisted extraction (UAE) for flavonoids in and their antioxidant activity by using the response surface methodology (RSM). Single-factor experiments and a four-factor three-level Box-Behnken design (BBD) were performed to explore the effects of the following parameters on flavonoid extraction and antioxidant activity evaluation: ultrasonic temperature (X), ultrasonic time (X), ethanol concentration (X) and liquid-solid ratio (X). The optimum conditions of the combination of total flavonoid content (TFC), 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity (DPPH-RSC) and ferric-reducing antioxidant power (FRAP) were as follows: X = 80 °C, X = 4 min, X = 78%, X = 35 mL/g, respectively. The experimental results provide a theoretical basis for the extensive utilization of and flavonoids extraction from as a potential source of antioxidants.

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