Development of paper based colorimetric method using pigment from red dragon fruit for determination of Cu and Fe

Abstract Betalain, a natural pigment found in red dragon fruit, has been proposed as a natural reagent for metal detection. In the present study, this pigment was extracted and used as a colorimetric reagent for Cu and Fe on a paper-based analytical device (PAD) and then applied to water samples. Th...

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Bibliographic Details
Main Authors: Rimadani Pratiwi, Raspati Dewi Mulyaningsih, Aliya Nur Hasanah
Format: Article
Language:English
Published: Nature Portfolio 2025-04-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-025-98693-7
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