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Formation and Stability of Pea Proteins Nanoparticles Using Ethanol-Induced Desolvation

Protein nanoparticles have recently found a lot of interests due to their unique physicochemical properties and structure-functionality compared to the conventional proteins. The aim of this research was to synthesize pea protein nanoparticles (PPN) using ethanol-induced desolvation, to determine th...

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Detalles Bibliográficos
Autores principales: Doan, Chi Diem, Ghosh, Supratim
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6669580/
https://www.ncbi.nlm.nih.gov/pubmed/31261964
http://dx.doi.org/10.3390/nano9070949
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author Doan, Chi Diem
Ghosh, Supratim
author_facet Doan, Chi Diem
Ghosh, Supratim
author_sort Doan, Chi Diem
collection PubMed
description Protein nanoparticles have recently found a lot of interests due to their unique physicochemical properties and structure-functionality compared to the conventional proteins. The aim of this research was to synthesize pea protein nanoparticles (PPN) using ethanol-induced desolvation, to determine the changes in secondary structures and the particle stability in an aqueous dispersion. The nanoparticles were prepared by diluting 3.0 wt% pea protein solutions in 1–5 times ethanol at pH 3 and 10 at different temperatures. Higher ratios of ethanol caused greater extent of desolvation and larger sizes of PPN. After homogenization at 5000 psi for 5 min, PPN displayed uniform size distribution with a smaller size and higher zeta potential at pH 10 compared to pH 3. PPN prepared from a preliminary thermal treatment at 95 °C revealed a smaller size than those synthesized at 25 °C. Electron microscopy showed roughly spherical shape and extensively aggregated state of the nanoparticles. Addition of ethanol caused a reduction in β-sheets and an increase in α-helices and random coil structures of the proteins. When PPN were separated from ethanol and re-dispersed in deionized water (pH 7), they were stable over four weeks, although some solubilization of proteins leading to a loss in particle size was observed.
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spelling pubmed-66695802019-08-08 Formation and Stability of Pea Proteins Nanoparticles Using Ethanol-Induced Desolvation Doan, Chi Diem Ghosh, Supratim Nanomaterials (Basel) Article Protein nanoparticles have recently found a lot of interests due to their unique physicochemical properties and structure-functionality compared to the conventional proteins. The aim of this research was to synthesize pea protein nanoparticles (PPN) using ethanol-induced desolvation, to determine the changes in secondary structures and the particle stability in an aqueous dispersion. The nanoparticles were prepared by diluting 3.0 wt% pea protein solutions in 1–5 times ethanol at pH 3 and 10 at different temperatures. Higher ratios of ethanol caused greater extent of desolvation and larger sizes of PPN. After homogenization at 5000 psi for 5 min, PPN displayed uniform size distribution with a smaller size and higher zeta potential at pH 10 compared to pH 3. PPN prepared from a preliminary thermal treatment at 95 °C revealed a smaller size than those synthesized at 25 °C. Electron microscopy showed roughly spherical shape and extensively aggregated state of the nanoparticles. Addition of ethanol caused a reduction in β-sheets and an increase in α-helices and random coil structures of the proteins. When PPN were separated from ethanol and re-dispersed in deionized water (pH 7), they were stable over four weeks, although some solubilization of proteins leading to a loss in particle size was observed. MDPI 2019-06-29 /pmc/articles/PMC6669580/ /pubmed/31261964 http://dx.doi.org/10.3390/nano9070949 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Doan, Chi Diem
Ghosh, Supratim
Formation and Stability of Pea Proteins Nanoparticles Using Ethanol-Induced Desolvation
title Formation and Stability of Pea Proteins Nanoparticles Using Ethanol-Induced Desolvation
title_full Formation and Stability of Pea Proteins Nanoparticles Using Ethanol-Induced Desolvation
title_fullStr Formation and Stability of Pea Proteins Nanoparticles Using Ethanol-Induced Desolvation
title_full_unstemmed Formation and Stability of Pea Proteins Nanoparticles Using Ethanol-Induced Desolvation
title_short Formation and Stability of Pea Proteins Nanoparticles Using Ethanol-Induced Desolvation
title_sort formation and stability of pea proteins nanoparticles using ethanol-induced desolvation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6669580/
https://www.ncbi.nlm.nih.gov/pubmed/31261964
http://dx.doi.org/10.3390/nano9070949
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