Abstract
A cellulose-cadmium (Cd)-tellurium (TE) quantum dots (QDs) composite film was successfully synthesized by incorporating CdTe QDs onto a cellulose matrix derived from waste cotton linters. Cellulose-CdTe QDs composite film was characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray (EDX) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and X-ray diffraction (XRD). The antibacterial activity of the prepared composite film was investigated using the multidrug-resistance (MTR) Staphylococcus aureus bacteria. In vitro antibacterial assays demonstrated that CdTe QDs composite film can efficiently inhibit biofilm formation. Our results showed that the cellulose-CdTe QDs composite film is a promising candidate for biomedical applications including wound dressing, medical instruments, burn treatments, implants, and other biotechnology fields.
Highlights
The Gram-positive (+ve) bacteria Staphylococcus aureus (S. aureus) is one of the widespread human pathogens and approximately 30–60% of the human population is intermittently or permanently colonized with S. aureus [1,2]
We investigate the effectiveness of glutathione (GSH)-capped CdTe quantum dots (QDs) supported on cellulose films in inhibiting the development of multidrug resistance (MDR) S. aureus biofilms
All these energy values are consistent with the energy values reported previously further confirms that CdTe QDs are anchored on the surface of the cellulose film
Summary
The Gram-positive (+ve) bacteria Staphylococcus aureus (S. aureus) is one of the widespread human pathogens and approximately 30–60% of the human population is intermittently or permanently colonized with S. aureus [1,2]. Cellulose fiber inherits intriguing properties including relative abundance, biocompatibility, low density and high strength, thermal and mechanical stability, nontoxicity, low cost, and good sorption properties. It has been used in many industries such as textile, food, energy, and medicine [14,15,16,17]. Over the past few years, there have been many investigations of cellulose-based composite materials as antimicrobial agents against many antibiotic resistance pathogens including S. aureus [18,19,20]. Cellulose films were prepared from a facile method using waste cotton linters To our knowledge, this is the first attempt to use waste cotton cellulose-CdTe QDs composite films as an anti-biofilm agent against S. aureus
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