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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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Purification of ginger derived ENPs using PEG6000. (a) Experimental flow chart depicting the purification of ginger ENPs using PEG6000 and ultra-centrifugation. (b) Photomicrographs of ENP pellets obtained in ultra-method (left panel) in comparison with increasing concentration of PEG6000. (c) The ENP pellets were lyophilized and weighed to calculate the total yield per kg of ginger rhizomes used. Increasing the PEG6000 concentration led to increased ENP yields. **P < 0.01. Results presented are an average of four independent experiments.