A cerium-containing nanogel with enzyme-like activity was combined with choline oxidase to build a color-change test for hydrogen peroxide and choline, validated with choline spiked into commercial milk and infant formula. Cerium is part of the sensor, not the analyte.
Key numbers
- Choline linear range 4 to 400 µM (abstract).
Methods (brief)
Polymer nanogel synthesis by atom transfer radical polymerization, enzyme entrapment and colorimetric assay with recovery testing in spiked foods.
Evidence fitness
Off-topic for dietary exposure: cerium is a sensor component; the paper does not support dietary exposure or toxicity claims about cerium.
Limitations
Laboratory material or biomedical study; no environmental, food or human exposure measurements.
Related evidence
Update history
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