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Evaluation of the colloidal/chemical performance of core-shell nanoparticle formed by zein and gum Arabic

Chen, Guowen, Fu, Yuying, Niu, Fuge, Zhang, Hao, Li, Xiaomeng, Li, Xin
Colloids and surfaces 2019 v.560 pp. 130-135
biopolymers, curcumin, encapsulation, gum arabic, hydrophobicity, iron, nanoparticles, nanospheres, pH, sodium, solubilization, temperature, zein
To evaluate the performance of biopolymer fabricated nanoparticle under commercial processing conditions, the stability of gum Arabic (GA)-zein-cur (curcumin) colloidal system was recorded and analyzed. The results showed that GA-zein-cur system is colloidal stable in the pH range of 5–8, however, encapsulated curcumin degraded rapidly as long as the pH changes. As for processing temperature, more than 70 °C will affect the spatial structure of zein and leading to the leak or exposure of encapsulated curcumin which result in the degradation of curcumin. Na+ has no significant effect on colloidal and chemical performance of nanoparticles while Fe3+ could penetrate the zein nanosphere and compromise curcumin. Results of our work imply that the protein-based core-shell delivery system has advantages in solubilizing the hydrophobic compounds and has certain ability to protect the encapsulated material against the unfavorable environment.