Molecules 2011, 16(3), 2218-2232; doi:10.3390/molecules16032218
Article

Microwave-Assisted Extraction of Phenolic Antioxidants from Potato Peels

1,* email, 2, 2, 3, 1, 1 and 1
Received: 6 January 2011; in revised form: 2 March 2011 / Accepted: 4 March 2011 / Published: 7 March 2011
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A response surface method was used to optimize the microwave-assisted extraction parameters such as extraction time (t) (min), solvent (methanol) concentration (S) (v/v) and microwave power level (MP) for extraction of antioxidants from potato peels. Max. total phenolics content of 3.94 mg g−1 dry weight (dw) was obtained at S of 67.33%, t of 15 min and a MP of 14.67%. For ascorbic acid (1.44 mg g−1 dw), caffeic acid (1.33 mg g−1 dw), ferulic acid (0.50 mg g−1 dw) max contents were obtained at S of 100%, t of 15 min, and MP of 10%, while the max chlorogenic acid content (1.35 mg g−1 dw) was obtained at S of 100%, t of 5 min, and MP of 10%. The radical scavenging activity of the extract was evaluated by using the DPPH assay and optimum antioxidant activity was obtained at S of 100%, t of 5 min, and MP of 10%.
Keywords: response surface method; chlorogenic acid; ferulic acid; ascorbic acid; DPPH; potato peel
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MDPI and ACS Style

Singh, A.; Sabally, K.; Kubow, S.; Donnelly, D.J.; Gariepy, Y.; Orsat, V.; Raghavan, G. Microwave-Assisted Extraction of Phenolic Antioxidants from Potato Peels. Molecules 2011, 16, 2218-2232.

AMA Style

Singh A, Sabally K, Kubow S, Donnelly DJ, Gariepy Y, Orsat V, Raghavan G. Microwave-Assisted Extraction of Phenolic Antioxidants from Potato Peels. Molecules. 2011; 16(3):2218-2232.

Chicago/Turabian Style

Singh, Ashutosh; Sabally, Kebba; Kubow, Stan; Donnelly, Danielle J.; Gariepy, Yvan; Orsat, Valérie; Raghavan, G.S.V. 2011. "Microwave-Assisted Extraction of Phenolic Antioxidants from Potato Peels." Molecules 16, no. 3: 2218-2232.

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