A new design for obtaining of white zein micro- and nanoparticles powder: antisolvent-dialysis method

Abstract

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 lm 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.

Nanoencapsulation of Eggplant (Solanum melongena L.) Peel Extract in Electrospun Gelatin Nanofiber: Preparation, Characterization, and In Vitro Release

“…In this sense, different methods have been proposed to nanoencapsulate extracts in biopolymers such as electrohydrodynamic atomization, nano spray dryer, antisolventdialysis [25], and micro/nanofluidics [26,27]. This is thanks to the fact that the food industry together with nutraceuticals is opening the way to reveal exclusive properties and high surface/volume ratio thanks to its small size, being able to guarantee purer compounds and a better application of them [28], specifically, electrohydrodynamic atomization (EHDA) processes including electrospraying and electrospinning techniques [20,29] for the formation of nanoparticles and nanofibers, respectively.…”

Fabrication, Characterization, and Antimicrobial Activity of Carvacrol-Loaded Zein Nanoparticles Using the pH-Driven Method

“…The first stage was from 50 °C to 210 °C, and the mass loss was 2.57% and 5.22% for zein and SC, respectively, mainly resulting from the evaporation of water in the sample. The second stage was from 210 °C to 400 °C, the mass loss of zein was 59.14%, and that of SC was 57.75%, which were mainly attributed to the breakdown of peptide bonds and amino acids in the protein structure [ 27 ]. When the temperature was 500 °C, the residual mass of zein was only 27.49%, and that of SC was 30.29%, and they mainly included hydrocarbons that were difficult to decompose in the nitrogen atmosphere [ 28 ].…”

Preparation and Characterization of Carvacrol-Loaded Caseinate/Zein-Composite Nanoparticles Using the Anti-Solvent Precipitation Method

“…From 200 • C to 400 • C, both zein and SC showed a large mass loss of 59.14% and 57.75%, respectively. This is mainly due to the decomposition of the amino acids and peptide bonds in proteins [33]. At 500 • C, the mass of zein and SC is only 27.49% and 30.29%, respectively, which may be the thermally stable residue C X H Y N Z under nitrogen.…”