Quercetin delivery characteristics of chitosan nanoparticles prepared with different molecular weight polyanion cross-linkers

Published on Sep 1, 2021in Carbohydrate Polymers7.182
· DOI :10.1016/J.CARBPOL.2021.118157
Eun Suh Kim8
Estimated H-index: 8
(Hanyang University),
Da Young Kim1
Estimated H-index: 1
(Hanyang University)
+ 1 AuthorsHyeon Gyu Lee35
Estimated H-index: 35
(Hanyang University)
Abstract The aim of the study was to investigate the effects of cross-linkers on quercetin (QUE) absorption characteristics of QUE-loaded chitosan nanoparticles (CS-NPs). CS-NPs (461.2–482.7 nm) were prepared by ionic gelation at pH 3.5 using tripolyphosphate (367.9 Da), dextran sulfate (>15 kDa), arabic gum (AG, >250 kDa), or hyaluronic acid (HA, >1000 kDa). Mucoadhesion and cell permeation of QUE were significantly increased by positive charged CS-NPs due to interactions with negatively charged mucosal layer. Moreover, CS-AG and CS-HA NPs prepared with relatively higher MW cross-linkers exhibited significantly higher adhesion and permeation than the others. These results were verified by a cellular antioxidant activity assay; CS-AG (137.5 unit) and CS-HA NPs (126.5 unit) showed significantly higher activities after internalization into Caco-2 cells. Therefore, encapsulation within CS-NPs prepared using high MW cross-linkers such as AG and HA is found to be potentially valuable techniques for improving the QUE absorption.
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