Fig 1.
Effect of zein and lecithin mass ratios on particle size (A), PDI (A), turbidity (B) and ζ-potential (B) of the composite colloidal nanoparticle dispersions. Values with different letters are significantly different (p < 0.05).
Fig 2.
Fluorescence spactra of zein and zein-lecithin complex in 70% (v/v) ethanol-water solution.
Fig 3.
CD spectra of zein and zein-lecithin complex in 70% (v/v) ethanol-water solution.
Fig 4.
FTIR of zein and zein-lecithin composite colloidal nanoparticles.
Fig 5.
DSC thermograms of zein and zein-lecithin composite colloidal nanoparticles.
Fig 6.
AFM images of zein and zein-lecithin composite colloidal nanoparticles.
Fig 7.
Effect of NaCl on zein and zein-lecithin composite colloidal nanoparticle dispersion stability.
Fig 8.
Effect of heating temperature on the mean particle size of zein and zein-lecithin composite colloidal nanoparticles (zein:lecithin = 1:1).
Fig 9.
Effect of pH on the mean particle size (A) andζ-potential (B) of zein and zein-lecithin composite colloidal nanoparticles (zein:lecithin = 1:1).
Fig 10.
Illustration of the formation mechanism and possible structures of zein and lecithin composite colloidal nanoparticles.