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http://hdl.handle.net/11129/6130
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Title: | Antibacterial Quaternary Chitosan / Alginate Polyelectrolyte Hydrogel Films with Silver Nanoparticles |
Authors: | Gazi, Mustafa (Supervisor) Güran, Mümtaz (Co-Supervisor) Vaizoğlu, Buse Eastern Mediterranean University, Faculty of Arts and Sciences, Dept. of Chemistry |
Keywords: | Chemistry Department Quaternary chitosan, Alginate, Silver Nanoparticles, Polyelectrolyte Film, Antibacterial, Antifungal, S. aureus, E. coli |
Issue Date: | Feb-2022 |
Publisher: | Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ) |
Citation: | Vaizoğlu, Buse. (2022). Antibacterial Quaternary Chitosan / Alginate Polyelectrolyte Hydrogel Films with Silver Nanoparticles. Thesis (M.S.), Eastern Mediterranean University, Institute of Graduate Studies and Research, Dept. of Chemistry, Famagusta: North Cyprus. |
Abstract: | Polymeric materials have an increasing attention due to their cost effective, easy to
use, bio degradable and bio compatible properties. Particularly chitosan and alginate
are two natural polymers which form fılm by making polyelectrolyte complex to use
as antimicrobial agent. In order to enhance the antimicrobial activity of chitosan
quaternization of the polymer is one strategy.
In this regard, Quaternary chitosan was synthesized with glycidyltrimethylammonium
chloride to fabricate polyelectrolyte bio composite film with alginate. Two different
mililiters (10 mL and 20 mL) of silver nitrate solution were used to obtain a quaternary
chitosan-alginate film loaded with silver nanoparticles. Polyelectrolyte hydrogel films
were prepared by the simple method without using any other solvent. The
characterization of the polyelectrolyte films was made by FT-IR Spectroscopy and the
colour of the films changed from white to brown after adding silver solution, indicating
that silver nanoparticles were loaded on the film. In addition, the immediate whitening
of the film thrown into the PBS solution with the swelling test indicates that the film
swells and releases silver nanoparticles into the environment.
The antibacterial and antifungal activity of four different kind of films (chitosan alginate (V4), quaternary chitosan-alginate (V2), quaternary chitosan-alginate with
10mL silver (V1) and quaternary chitosan-alginate with 20 mL silver (V3)) were
compared by the disk diffusion method and antimicrobial effect of silver was observed.
The films have a hydrophilic character. In this study we fabricated a novel promising
antimicrobial material which may use as wound healing or disinfection agent
especially against common pathogens Staphylococcus aureus (S. aureus),
Enterococcus faecalis (E. faecalis), Escherichia coli (E. coli), Klebsiella pneumoniae
(K. pneumoniae). ÖZ:
Polimerik malzemeler, uygun maliyetli, kullanımı kolay, biyolojik olarak uyumlu ve
parçalanabilir olduklarından dolayı artan bir ilgiye sahiptirler. Özellikle kitosan ve
aljinat, antimikrobiyal ajan olarak kullanmak üzere polielektrolit kompleks film
oluşturan iki doğal polimerdir. Antimikrobiyal aktiviteyi artırmak için de bir strateji
kitosanın kuaternarizasyonudur.
Bu bağlamda, aljinat ile polielektrolit biyokompozit filmi üretmek için
glisidiltrimetilamonyum klorür ile kuaterner kitosan sentezlendi. Gümüş nanoparçacık
yüklü kuaterner kitosan-aljinat filmi elde etmek için iki farklı mililitrelerde (10 ml ve
20 mL) gümüş nitrat çözeltisi kullanıldı. Polielektrolit hidrojel filmler, başka bir
çözücü kullanılmadan basit yöntemle hazırlanmıştır. Polielektrolit filmlerin
karakterizasyonu FT-IR Spektroskopisi ile yapılmış ve filmlerin renginin gümüş
çözeltisi eklendikten sonar beyazdan kahverengiye değişmesi, gümüş
nanopartiküllerin filme yüklendiğini göstermiştir. Ayrıca şişme testi ile PBS
solüsyonuna atılan filmin hemen beyazlaması, filmin şiştiğini ve ortama gümüş
nanopartiküller saldığını gösterir.
Dört farklı film çeşidinin (kitosan-aljinat (V4), kuaterner kitosan-aljinat (V2),
kuaterner kitosan-aljinat ile 10 mL gümüş (V1) ve kuaterner kitosan-aljinat ile 20 mL
gümüş (V3)) antibakteriyel ve antifungal aktivitesi disk difüzyon yöntemi ile
karşılaştırıldı ve gümüşün antimikrobiyal etkisi gözlendi. Filmler hidrofilik bir
karaktere sahiptir. Bu çalışmada özellikle yaygın patojenler Staphylococcus aureus (S.
aureus), Enterococcus faecalis (E. faecalis), Escherichia coli (E. coli), Klebsiella
pneumoniae (Kpneumoniae)’ye karşı yara iyileştirme veya dezenfeksiyon maddesi
olarak kullanılabilecek umut verici yeni bir antimikrobiyal materyal ürettik. |
Description: | Master of Science in Chemistry. Institute of Graduate Studies and Research. Thesis (M.S.) - Eastern Mediterranean University, Faculty of Arts and Sciences, Dept. of Chemistry, 2022. Co-Supervisor: Assoc. Prof. Dr. Mümtaz Güran and Supervisor: Prof. Dr. Mustafa Gazi |
URI: | http://hdl.handle.net/11129/6130 |
Appears in Collections: | Theses (Master's and Ph.D) – Chemistry
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