María Hormigos, RobertoMayorga-Martinez, Carmen C.Kim, JeonghyoPumera, Martin2025-12-192025-12-192025-03-11Roberto Maria‐Hormigos, Carmen C. Mayorga‐Martinez, Jeonghyo Kim, Martin Pumera. High‐throughput Photoactive Magnetic Microrobots for Food Quality Control. Small Methods, 9 (7), 2025, 24019522366-9608https://doi.org/10.1002/smtd.202401952https://hdl.handle.net/20.500.14468/31227The registered version of this article, first published in “Small Methods, 9 (7), 2025, 2401952", is available online at the publisher's website: https://doi.org/10.1002/smtd.202401952La versión registrada de este artículo, publicado por primera vez en “Small Methods, 9 (7), 2025, 2401952", está disponible en línea en el sitio web del editor: https://doi.org/10.1002/smtd.202401952Ensuring food quality and safety according to stringent global standards requires analytical procedures that are accurate, cost-effective, and efficient. This present innovative high-throughput microrobots designed for the detection of antioxidants in food samples. These microrobots consist of photocatalytic bismuth subcarbonate anchored on silica-coated magnetite nanoparticles. Upon exposure to UV light, they generate reactive oxygen species via photocatalysis, which oxidize the colorless dye into a green-colored radical cation. The presence of antioxidants inhibits this reaction, allowing for the quantification of antioxidant activity. The magnetic Fe₃O₄/SiO₂ core enables steering of the microrobots using a transverse rotating magnetic field, facilitating automated assays on a custom-designed 3D-printed sensing platform. This results demonstrate that these magneto-photocatalytic microrobots can perform automated, high-throughput assessments of food quality, representing a significant advancement in food analysis technology.esinfo:eu-repo/semantics/openAccess2301 Química analítica2302 Bioquímicaartículofood analysismicrorobotsnanorobots