Title: Determination and Content of Flavonoids in Potato Peel
Abstract: The procedure for flavonoid extraction from potato peel was studied and optimal conditions determined using potato as experimental material. In the experiment, flavonoids in potato peel was extracted, separated, and evaluated by clearance of 1,1-Diphenyl-2-picrylhydrazyl radical 2, 2-Diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl(DPPH). Through single factor experiments, extraction efficiency was studied under different extraction solvents, temperatures, times, as well as the ratios of solid to liquid. An orthogonal experiment was designed based on changes in 4 factors and 3 levels to determine the best conditions for flavonoid extraction in potato peel. The experiment showed that extracted flavonoids in potato peel in 80% acetone solution with the ratio of 1: 10 of solid to liquid at 50° C for 3 h could get the ideal result. Under these conditions, the DPPH clearance rate was 84.62% and the content of flavonoids in dried potato peel was 10.95 mg /g DW. Potato peel contained higher flavonoids than other fruit peels which has a similar antioxidant activity.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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