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- W4382134653 abstract "Due primarily to the many health benefits associated with a diet high in antioxidants, numerous assays have been developed to determine antioxidant content of foods. However, most are time-consuming and costly. This paper presents an electrochemical technique as a simple, sensitive and cost-effective alternative to traditional assays, and uses the presented technique to determine the optimal method for the extraction of antioxidants from produce samples. In this study, fresh carrot, tomato, rhubarb, raspberry, strawberry, red bell pepper, green bell pepper and yellow bell pepper samples were subjected to three different extraction methods: aqueous extraction, using phosphate buffer as the extraction solvent; organic extraction, using acidified methanol as the extraction solvent; and solventless extraction, using a Breville® home juicer. Extracts were then analyzed by differential pulse voltammetry (DPV). Differences in the potential and area of the principal peak, indicative of antioxidant activity and capacity respectively, were analyzed to determine the effect of extraction method on antioxidant measurement. Aqueous extraction was found to provide the most effective extraction relative to antioxidant activity, while organic extraction was most effective relative to antioxidant capacity. Limits of detection and quantitation were 1.9 x 10-4 mol/L and 6.5 x 10-4 mol/L, respectively. This study showed DPV to be a sensitive and effective technique for antioxidant determination." @default.
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- W4382134653 date "2014-11-01" @default.
- W4382134653 modified "2023-10-16" @default.
- W4382134653 title "Effect of Extraction Method on Antioxidant Determination in Produce by Differential Pulse Voltammetry" @default.
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- W4382134653 doi "https://doi.org/10.1016/s1452-3981(23)10884-4" @default.
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