Facile route of synthesis of silver nanoparticles templated bacterial cellulose, characterization, and its antibacterial application

Abstract

Bacterial cellulose (BC) produced from coconut water, commonly known as nata de coco, is a biopolymer with enormous properties. Compared to plant cellulose, BC has better mechanical strength and a greater degree of polymerization. BC’s high purity and high porosity make it a suitable candidate for the embedding and dispersion template for silver nanoparticles (AgNPs). This study investigated a facile and scalable method of making BC from coconut water and impregnated them with AgNO3 solution to produce AgNPs templated BC. The resulting materials were characterized by Fourier transform infra-Red (FTIR), scanning electron microscope (SEM), energy dispersive X-ray (EDX), and X-ray diffraction (XRD). The thermal stability was also investigated by thermogravimetric analysis (TGA). The antibacterial activity of AgNPs templated BC was challenged in cultures of gram-positive bacteria Staphylococcus aureus and gram-negative bacteria Escherichia coli and showed an inhibition zone of growth in agar media. This study proves that the resulting AgNPs templated BC sheets are potential materials for antibacterial and industrial application that are low cost and easy to produce.

Antibacterial Potential of Bacterial Cellulose Impregnated with Green Synthesized Silver Nanoparticle Against S. aureus and P. aeruginosa

“…In X-ray diffraction, the intense peaks observed at 27.46° and 31.88° corresponds to (110) and (111) of Ag 2 O. Diffraction peaks at 45.90°, 54.51° and 67.13° could be due to (211), (220) and (222) planes of face‐center cubic silver, respectively as compared with the standard Ag 2 O (JCPDS 76‐1393). Also, same results reported by [ 27 – 29 ]. Unknown peaks observed at 57.17°, 64.19° may correspond to any contamination from plant leaf extract.…”

“…FTIR analyses of AgNPs indicated the presence of C–N and C–C stretching which in turn indicate the presence of proteins which also reported by [ 29 , 30 ]. Also, detection of N–H stretch vibration indicates the presence of amide linkages of the proteins.…”

Fabrication of Silver Nanoparticle Loaded into Nanocellulose Derived from Hemp and Poly(vinyl alcohol)-Based Composite as an Electrode for Electrochemical Sensors for Lactate Determination

“…Furthermore, with the existence of AgNPs in the composite, a low intensity of peak is observed at the diffraction angle of 28.9°. It is attributed to the diffraction plane of (111) caused by the presence of AgNPs . With the increase of HNC/AgNPs, the intensity is therefore slightly high.…”

“…It is attributed to the diffraction plane of (111) caused by the presence of AgNPs. 38 With the increase of HNC/AgNPs, the intensity is therefore slightly high. It could significantly improve the crystallinity of the composite.…”

Effect of Reduction Methods on the Properties of Composite Films of Bacterial Cellulose-Silver Nanoparticles

“…For the reduction of Ag ions using NaOH and ascorbic, the pretreated BC pellicles that had earlier been immersed in the 0.02 M AgNO 3 solution were rinsed with DI water to eliminate excess AgNO 3 solution. Subsequently, the pellicles of BC-Ag ions were reduced by immersing them in a solution containing 0.12 M ascorbic acid or 0.12 M NaOH for 30 min [ 14 , 24 ]. For reduction by chitosan, the BC pellicles were pretreated by immersing them in a solution of 0.02 M AgNO 3 , 2.0% ( w/v ) chitosan, and 1.0% ( v/v ) acetic acid, stirring for 2 h, and leaving them in the dark for 2 days.…”