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. 2020 Mar 10;10:4456. doi: 10.1038/s41598-020-61358-8

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© The Author(s) 2020, corrected publication 2024

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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The size and zeta potential of PEG derived ENPs are comparable to ultra-ENPs. (a) & (c) Size distribution of purified ginger ENPs were determined using Malvern Zeta analyzer. PEG derived ENPs showed size distribution similar to ultra-ENPs, though at higher concentrations of PEG, significantly smaller sized ENPs were precipitated. **P < 0.01. Results presented are an average of four independent experiments. (b) & (d) No significant differences in zeta potential was observed between ultra-versus PEG-ENPs.