Journal
FOOD & FUNCTION
Volume 12, Issue 18, Pages 8626-8634Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1fo01852c
Keywords
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Funding
- National Science Fund for Distinguished Young Scholars of China [31925031]
- Doctoral Scientific Research Foundation of Liaoning Province [2020-BS-211]
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Food-borne nanoparticles from Undaria pinnatifida (UPFNs) were successfully utilized as nanocarriers for zinc delivery, showing high solubility and safety with the ability to rescue zinc-deficient cells.
Food-borne nanoparticles from Undaria pinnatifida (UPFNs) were prepared and successfully applied as nanocarriers for microelement zinc delivery. UPFNs were spherical nanoparticles with average sizes of about 4.07 +/- 1.09 nm, which chelated with zinc ions through amino nitrogen and carboxyl oxygen atoms as characterized by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and H-1 nuclear magnetic resonance spectroscopy. Thermodynamic analysis revealed that the overall chelation process between UPFNs and zinc ions was a spontaneous enthalpy-driven endothermic reaction. Compared to zinc sulfate, UPFN-Zn2+ showed higher solubility both in phytic acid solution and the process of gastrointestinal digestion. Meanwhile, no obvious cytotoxicity was found in UPFNs and UPFN-Zn2+. Specifically, UPFN-Zn2+ could successfully rescue cell viability, DNA replication activity and restore cell proliferation ability in zinc-deficient cells induced by a specific zinc chelator TPEN. Overall, UPFNs might serve as efficient, stable, and safe nanocarriers for zinc delivery.
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