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KMID : 1007520200290050619
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Food Science and Biotechnology
2020 Volume.29 No. 5 p.619 ~ p.629
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A new design for obtaining of white zein micro- and nanoparticles powder: antisolvent-dialysis method
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Rodriguez-Felix Francisco
Del-Toro-Sanchez Carmen Lizette
Tapia-Hernandez Jose Agustin
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Abstract
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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.
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KEYWORD
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Antisolvent-dialysis method, White zein powder, Microparticles, Nanoparticles, Characterization
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