Abstract
Isoorientin (Iso) is a natural flavone with multiple activities. In the present study, the partial chemical properties and activities of Iso were improved by the nanoparticle loading technique. Zein/GA nanoparticles were successfully synthesized with the antisolvent precipitation method, and the structure and stability of the Zein/GA nanoparticles loaded with Iso (Zein/GA-Iso nanoparticles) were characterized by FTIR, UV–vis spectroscopy and zeta-sizer analysis. Results showed that Zein/GA-Iso nanoparticles possessed greater stability, light stability, hydrophilicity and antioxidant activity. Furthermore, Zein/GA-Iso nanoparticles exerted notable antibacterial activity against E. coli, S. aureus, and P. aeruginosa by destroying the permeability and integrity of cell membrane. On this basis, Zein/GA-Iso nanoparticles do have a bacteriostatic effect on pork. In conclusion, Zein/GA-Iso nanoparticles had better stability and pork preservation for applications in the food processing field as a new type of antiseptic and freshening agent.
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