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<p>Both lutein and chlorophyllin are vital natural pigments. However, the application of lutein has been limited due to its low environmental stability and poor bioavailability. Herein, lutein/Cu-Chlorophyllin (L-Chls) composites have been fabricated via a simple and mild solvent-mixing process at room temperature. Compared to the pristine lutein, the synthesized L-Chls showed 5.2 times higher photostability and 6.9 times better antioxidant ability. The retention rate and thermostability in the air also improved by 77% and 23%, respectively. The experimental results reveal the energy/electron co-transfer at the interface of lutein and Cu-Chl, and a possible mechanism for the enhanced photostability and antioxidant ability of the L-Chls has been proposed. This work provided a feasible strategy to improve the stability and antioxidant ability of lutein, and can also be expanded to the functional food and pharmaceutical field.</p>

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Bioinspired Coupling Effect Between Lutein and Cu-Chlorophyllin for Remarkable Stability and Antioxidant Activity Enhancement

  • 期刊论文

  • 发表日期：

    2025年11月19日

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  • Shuangshuang Wu,
  • Dajian Ju,
  • Ao Li,
  • Tianhao Ji,
  • Mingyu Shi,
  • Zhemi Xu

摘要

Both lutein and chlorophyllin are vital natural pigments. However, the application of lutein has been limited due to its low environmental stability and poor bioavailability. Herein, lutein/Cu-Chlorophyllin (L-Chls) composites have been fabricated via a simple and mild solvent-mixing process at room temperature. Compared to the pristine lutein, the synthesized L-Chls showed 5.2 times higher photostability and 6.9 times better antioxidant ability. The retention rate and thermostability in the air also improved by 77% and 23%, respectively. The experimental results reveal the energy/electron co-transfer at the interface of lutein and Cu-Chl, and a possible mechanism for the enhanced photostability and antioxidant ability of the L-Chls has been proposed. This work provided a feasible strategy to improve the stability and antioxidant ability of lutein, and can also be expanded to the functional food and pharmaceutical field.