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. 2022 Nov 12;15(11):1394. doi: 10.3390/ph15111394

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© 2022 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 (https://creativecommons.org/licenses/by/4.0/).

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Preparation and characterization of HYAP. (A) Schematic diagram of the preparation of HYAP. (B) Morphology of HYAP by TEM. Scale bar: 100 nm. (C) Size distribution of HYAP by DLS. (D) Zeta-potential of HYAP. (E) Size and PDI changes of HYAP in seven days. (F) Cumulative release rate of HYAP and HSYA in vitro by UV. (G) Ultraviolet spectroscopy analysis of HSYA, phospholipids, mixture of HSYA and phospholipids, and HYAP. (H) Fourier transform infrared spectroscopy analysis of HSYA, phospholipids, mixture of HSYA and phospholipids, and HYAP.