Pulse Brain · Growing Health Evidence Index
Peer-reviewed

In vitro release kinetics of bioactive compounds (gallic acid, ellagic acid, and eugenol) from chitosan polymer and the bioactivity of herb-loaded chitosan–CuO nanocomposites

Geethma Ekanayake; Supuni Wijayawardana; Madara Jayanetti; Charitha Thambiliyagodage; Heshan Liyanaarachchi; Amavin Mendis

Scientific Reports · 2025

Read source ↗ All evidence

Summary

The biological efficacy of nanocomposites comprised of chitosan, CuO nanoparticles, and extracts of Phyllanthus emblica, and Syzygium aromaticum was studied. The study assessed the pH- and ionic strength-responsive controlled release of the bioactive compounds, gallic acid, ellagic acid and eugenol, from the chitosan biopolymer. Release data were fitted into zero-order, first-order, Korsmeyer-Peppas (KP), Peppas-Sahlin (PS), Higuchi, and Hixson-Crowell kinetic models to evaluate the release mechanism. According to KP and PS models (R<sup>2</sup> ≥ 0.96), release was governed by quasi-Fickian diffusion (n < 0.43), where the diffusion occurs along with the polymer relaxation and swelling. P.emblica-coated chitosan (PeC) composite exhibited a burst release at acidic media conditions, and a qu

Source type
Peer-reviewed study
DOI
10.1038/s41598-025-19914-7
Catalogue ID
NRmo3d4gae-0f3
Pulse AI · ask about this record

Dig deeper with Pulse AI.

Pulse AI has read the whole catalogue. Ask about this record, its theme, or how the findings apply to UK farming and policy — every answer cites the underlying studies.