A new design for obtaining of white zein micro- and nanoparticles powder: antisolvent-dialysis method
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The objective of this work was propose antisolvent-dialysis as a new, easy, one-step and reproducible method for obtaining white zein micro- and nanoparticles powder. Firstly, the study by SEM of white zein powder predicted micro- and nanoparticles with spherical morphology and average diameters of 243.2 ± 94.5 nm for nanoparticles and 0.74 ± 0.2 μm for microparticles. UV–Vis predicted lower absorbance of 250–500 nm for white zein powder compared to commercial yellow zein powder. FT-IR showed shifting of the main bands to the right, due to changes in particle-shaped microstructure that acquires white zein powder compared to yellow zein powder. In TGA white zein powder showed a decomposition range from 214 to 400 °C, while yellow zein powder from 240 to 400 °C. Therefore, antisolvent-dialysis is new method to obtain white zein micro- and nanoparticles with potential applications such as polymer matrix and white natural coloring.
KeywordsAntisolvent-dialysis method White zein powder Microparticles Nanoparticles Characterization
M.Sc. José Agustín Tapia Hernández, thanks CONACYT for the scholarship granted.
Compliance with ethical standards
Conflict of interest
The authors declared no conflict of interest.
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