Lab-on-a-disc for simultaneous determination of total phenolic content and antioxidant activity of beverage samples
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- Lab-on-a-disc for simultaneous determination of total phenolic content and antioxidant activity of beverage samples
- Phonchai, Apichai; Kim, Yubin; Chantiwas, Rattikan; Cho, Yoon-Kyoung
- Issue Date
- ROYAL SOC CHEMISTRY
- LAB ON A CHIP, v.16, no.17, pp.3268 - 3275
- In this paper, we present a fully integrated and automated lab-on-a-disc for the rapid determination of the total phenolic content (TPC) and antioxidant activity (AA) of beverage samples. The simultaneous determinations of TPC and AA on a spinning disc were achieved by integrating three independent analytical techniques: the Folin–Ciocalteu method that is used to measure TPC, the 2,2-diphenyl-1-picrylhydrazyl radical (DPPH) method and the ferric reducing antioxidant power method that are used to measure AA. The TPC and AA of 8 different beverage samples, including various fruit juices, tea, wine and beer, were analyzed. Unlike conventional labor-intensive processes for measuring TPC and AA, our fully automated platform offers one-step operation and rapid analysis.
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