Online ISSN: 2515-8260

Keywords : chitosan nanoparticles

Antibacterial Finishing and Dyeing Affinity Enhancement of cellulose-based fabrics via pre-treatment by chitosan nanoparticles treatment

Fatma A. Mohamed; Maysa M. Reda

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 10, Pages 2378-2392

Chitosan nanoparticles were prepared as green antibacterial finishing material and enhance antimicrobial activity of cellulose-based fabrics such as cotton and viscose. Two new bifunctional dye Bis (monochlorotriazine) (MCT) and hetero bifunctional (SES/MCT) reactive dyes have been prepared in previous work. Dimedone moiety (5,5-Dimethylcyclohexane-1,3-dione) and applied in cellulose-based fabrics with various chitosan nanoparticles concentrations imparting them antimicrobial activity. In this work the effect of chitosan nanoparticles on dye ability of cellulose-based fabrics were studied from evaluation of the colour strength expressed in K/S values of the dyed fabrics at different concentration of chitosan nanoparticles and the two synthesized used dyes. Results showed that chitosan nanoparticles treated cellulose-based fabrics have higher affinity towards dyeing than untreated cellulose-based fabrics. Also, the antimicrobial properties of the treated fabrics were higher than that of untreated fabrics and give higher exhaustion without using any salts and alkalinity. So, chitosan nanoparticles exhibit cellulose based fabrics high antimicrobial and having dyeing affinity than untreated one. Also, treated dyed fabrics showed very good to excellent fastness properties.

“Evaluating Salivary pH, Uric acid, & CReactive Protein levels in Completely Edentulous patients before and after wearing Complete dentures incorporated with and without 7.5% Chitosan nanoparticles” – An Interventional Study


European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 2, Pages 2132-2137

Abstract: Background: Saliva plays major part in oral well-being of complete denture
users and also considered a very important biomarker for overall body health and indicates
several biomolecules just like blood to give useful information and monitoring of diseases
and health .Denture stomatitis is a common finding in complete denture wearers and
analysing salivary ph, Uric acid & C-reactive protein levels through saliva collection will
help in its early diagnosis and treatment. Chitosan, a biomaterial nanoparticle
incorporated into dentures gives it antifungal and antimicrobial effect. Having
antimicrobial and regenerative properties it is of interest in dentistry and already being
used in toothpastes, mouth rinses and dental dressings.
Objectives: To evaluate salivary ph , Uric acid & C-Reactive protein levels before and after
complete denture insertion with and without addition of Chitosan nanoparticles &
Comparatively evaluate the outcome.
Method: 15 complete denture patients incorporated with Chitosan nanoparticles will be
tested for salivary ph, C-Reactive protein & Uric acid levels. Saliva samples will be
collected from subjects immediately before the insertion of complete dentures and after 24
hrs and compared with Control groups not containing Chitosan.
Results: This study shows antifungal and antimicrobial effect of Chitosan in Complete
dentures which implies less fungal activity post denture insertion leading to less denture
stomatitis cases proving effectiveness in preventing Denture stomatitis.