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- W1644027988 abstract "Abstract Microwave-assisted extraction of polyphenols and flavonoids from waste Achillea millefolium (yarrow) dust was optimised using the response surface methodology. The influence of the extraction time (13–47 s), ethanol concentration (53–87%), liquid/solid ratio (13–47 mL/g) and microwave power (170 and 340 W) was studied. The optimised conditions for the maximal recovery of polyphenols and flavonoids were as follows: 33 s of extraction time, 70% of ethanol concentration, 40 mL/g of liquid/solid ratio and 170 W of microwave power. Under the optimal conditions, 237.74 ± 2.08 mg of gallic acid equivalents per g of extract dry matter of total polyphenols, and 42.95 ± 1.32 mg of quercetin equivalents per g of extract dry matter of total flavonoids were extracted. The optimal extract strongly reduced the diphenylpicrylhydrazyl radical (IC50 7.89 μg/mL). The antioxidant activity of the obtained extracts was in correlation to the total polyphenol content in yarrow extracts. Compared to the conventional extractions (solid–liquid extraction (24 h) and maceration (48 h)) microwave-assisted extraction yielded extracts with higher polyphenol and flavonoid content and higher antioxidant activity in very short time (33 s)." @default.
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- W1644027988 date "2015-12-01" @default.
- W1644027988 modified "2023-10-18" @default.
- W1644027988 title "Optimisation of microwave-assisted extraction parameters for antioxidants from waste Achillea millefolium dust" @default.
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- W1644027988 doi "https://doi.org/10.1016/j.indcrop.2015.09.007" @default.
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