Apostolidis, E, Stergiou, A, Kioupis, D et al. (4 more authors) (2023) Production of nanoparticles from resistant starch via a simple three-step physical treatment. Food Hydrocolloids, 137. 108412. ISSN 0268-005X
Abstract
The purpose of this study was to physically process Hi-maize 260® granules and investigate the size reduction towards obtaining starch nano-particles, stable in aqueous suspensions. We developed a novel sequential three-step physical process consisting of hydrothermal gelatinization, nano-precipitation and ultrasonic treatment. Ultrasonication proved to be a key-step to dismantle the ununiform agglomerates nanoparticles produced by the nanoprecipitation of the hydrothermally gelatinized starch, furnishing uniform nanoparticles (170 nm). This was unveiled by complementary Dynamic Light Scattering (DLS) and electrophoretic mobility (Z-potential) studies, as well as fluorescence spectroscopy. Notably, this 3-step process reduced the size of the starch particles to nano dimensions without destroying their crystallographic structure, as shown by X-ray diffraction (XRD) and Small Angle X-ray Scattering (SAXS), or changing. their chemical integrity, as validated by Fourier transform infrared spectroscopy (FTIR) and Thermogravimetric Analysis (TGA) analyses. Finally, we evaluated the hydrophobicity of the isolated nanoparticles by employing the sessile drop method, witnessing an increment to the hydrophobicity as a result of size reduction. Collectively, we developed a handy protocol enroot to reduce the size of RS2 starch particles enabling its application in an array of meaningful real-world food applications.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 Elsevier Ltd. All rights reserved. This is an author produced version of an article published in Food Hydrocolloids. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Physical modification; Resistant starch type 2; Starch nano-particles; Morphology |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Food Science and Nutrition (Leeds) > FSN Chemistry and Biochemistry (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 01 Feb 2023 16:26 |
Last Modified: | 17 Dec 2023 01:13 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.foodhyd.2022.108412 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:195906 |
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Licence: CC-BY-NC-ND 4.0