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Updated: May 22, 2026

Enhanced Photoluminescence of Curcuma longa Extracts via Chitosan-Mediated Energy Transfer for Textile Authentication Applications
Published on: December 22, 2023
A novel Camellia oil microemulsion significantly enhances the bioaccessibility and antioxidant activity of curcumin:
Jingyi Chen1, Jiayi Zou1, Yuting Yang1
1School of Life Sciences, Sichuan Agricultural University, Yaan 625000, China.
Abstract:
This study compared a camellia oil-based microemulsion (CUR-ME) with a macroemulsion (CUR-MacE) of identical composition to enhance the delivery of curcumin. The CUR-ME exhibited a nanoscale droplet size (∼12 nm), low polydispersity (PDI < 0.1), and superior physical stability. During in vitro digestion, CUR-ME achieved a 2.6-fold higher bioaccessibility of curcumin (79.5%) compared to CUR-MacE (30.4%). The bioaccessible fraction from CUR-ME also demonstrated significantly stronger retention of antioxidant activity in ABTS and FRAP assays. Thermal analysis confirmed the molecular dispersion of curcumin within the microemulsion and revealed compatible interactions with the camellia oil phase. These findings underscore the microemulsion structure as a decisive factor for improving the bioaccessibility and preserving the antioxidant activity of curcumin, offering a superior delivery strategy for functional foods.
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