Department of Physics, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang 50275, Indonesia
BibTex Citation Data :
@article{JKSA83384, author = {Ernik Dwi Safitri and Ngurah Ayu Ketut Umiati and Agus Subagio}, title = {Optimization of Guava Leaf Extract Loading in Chitosan-Based Nanoencapsulation for Oxidation Inhibition}, journal = {Jurnal Kimia Sains dan Aplikasi}, volume = {29}, number = {5}, year = {2026}, keywords = {Nanoencapsulation; Guava Leaves; Ionic Gelation; Chitosan; Inhibition}, abstract = { Guava leaves contain various active compounds, including tannins, phenolics, and flavonoids, with potential as antioxidants, antimicrobials, and anti-inflammatory agents. Guava leaf extract has been used in various fields, including manufacturing, as a corrosion inhibitor. Nanoencapsulation is a method for maintaining the stability and durability of guava leaf extract under various environmental conditions, including changes in pH and temperature, as well as chemical degradation. In this study, guava leaf extract was obtained by ultrasonication. Nanoencapsulation of guava leaf extract at varying concentrations was performed using the ionic gelation method with the natural polymer chitosan and the cross-linking agent STPP. Sample characteristics were identified using X-ray Fluorescence Spectroscopy, Fourier Transform Infrared Spectroscopy, Particle Size Analysis, and Inductively Coupled Plasma–Optical Emission Spectroscopy. The optimal concentration of guava leaf extract in this encapsulation study, 2000–3500 ppm, resulted in particle sizes of 315–390 nm and a polydispersity index below 0.5, indicating well-dispersed particles. The smaller, more dispersed particles will increase the electrostatic bonding between particles, thereby strengthening the interactions involved in the formation of the complex layer. This layer reduces pyrite oxidation by decreasing the release of sulfur and iron into the leaching environment. Nanoencapsulation of guava leaf extract using the ionic gelation method with chitosan is quite effective. }, issn = {2597-9914}, pages = {347--353} doi = {10.14710/jksa.29.5.347-353}, url = {https://ejournal.undip.ac.id/index.php/ksa/article/view/83384} }
Refworks Citation Data :
Guava leaves contain various active compounds, including tannins, phenolics, and flavonoids, with potential as antioxidants, antimicrobials, and anti-inflammatory agents. Guava leaf extract has been used in various fields, including manufacturing, as a corrosion inhibitor. Nanoencapsulation is a method for maintaining the stability and durability of guava leaf extract under various environmental conditions, including changes in pH and temperature, as well as chemical degradation. In this study, guava leaf extract was obtained by ultrasonication. Nanoencapsulation of guava leaf extract at varying concentrations was performed using the ionic gelation method with the natural polymer chitosan and the cross-linking agent STPP. Sample characteristics were identified using X-ray Fluorescence Spectroscopy, Fourier Transform Infrared Spectroscopy, Particle Size Analysis, and Inductively Coupled Plasma–Optical Emission Spectroscopy. The optimal concentration of guava leaf extract in this encapsulation study, 2000–3500 ppm, resulted in particle sizes of 315–390 nm and a polydispersity index below 0.5, indicating well-dispersed particles. The smaller, more dispersed particles will increase the electrostatic bonding between particles, thereby strengthening the interactions involved in the formation of the complex layer. This layer reduces pyrite oxidation by decreasing the release of sulfur and iron into the leaching environment. Nanoencapsulation of guava leaf extract using the ionic gelation method with chitosan is quite effective.
Article Metrics:
Last update:
Last update: 2026-06-19 09:20:41
As an article writer, the author has the right to use their articles for various purposes, including use by institutions that employ authors or institutions that provide funding for research. Author rights are granted without special permission.
Author who publishes a paper at JKSA has the broad right to use their work for teaching and scientific purposes without the need to ask permission, including: used for (i) teaching in the author's class or institution, (ii) presentation at meetings or conferences and distributing copies to participants ; (iii) training conducted by the author or author's institution; (iv) distribution to colleagues for research use; (v) use in the compilation of subsequent authors' works; (vi) inclusion in a thesis or dissertation; (vi) reuse of part of the article in another work (with citation); (vii) preparation of derivative works (with citation); (viii) voluntary posting on open websites operated by authors or author institutions for scientific purposes (follow the CC BY-SA License).
Authors and readers can copy and redistribute material in any media or format, and mix, modify, and build material for any purpose but they must provide appropriate credit (provide article citation or content), providing links to the license, and indicate if there are changes.
The authors submitting a manuscript do so on the understanding that if accepted for publication, copyright of the article shall be assigned to Jurnal Kimia Sains dan Aplikasi (JKSA). Copyright encompasses rights to reproduce and deliver the article in all form and media, including reprints, photographs, microfilms and any other similar reproductions, as well as translations.
Reproduce any part of this journal, its storage in the database or its transmission by all forms or media is permitted does not need for written permission from JKSA. However, it should be cited as an honor in academic manners
JKSA and the Chemistry Department of Diponegoro University and the Editor make every effort to ensure that there are no data, opinions, or false or misleading statements published in JKSA. However, the content of the article is the sole and exclusive responsibility of each author.
The Copyright Transfer Form can be downloaded here: [Copyright Transfer Form - Indonesian] [Copyright Transfer Form - English]. The copyright form should be signed originally and send to the Editor in the form of printed letters, scanned documents sent via email or fax.
Adi Darmawan, Ph.D (Editor in Chief)
Editor in chief of Jurnal Kimia Sains dan Aplikasi (JKSA)
Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University
Visitor: View My Stats
Jurnal Kimia Sains dan Aplikasi is indexed in:
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
