Journal
BIOPROCESS AND BIOSYSTEMS ENGINEERING
Volume 45, Issue 2, Pages 257-268Publisher
SPRINGER
DOI: 10.1007/s00449-021-02655-y
Keywords
Komagataeibacter rhaeticus; Bacterial cellulose (BC); AgNPs; BC/AgNP composite
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A simple and ecofriendly method for synthesizing silver nanoparticles and BC/AgNP composite was developed using bacterial cellulose nanofibers soaked in silver nitrate solution under solar radiation induction. The synthesized AgNPs exhibited strong antibacterial activity against both Gram-positive and Gram-negative bacteria, making them potentially useful for food packaging and wound dressing applications.
In the present work, a simple, novel, and ecofriendly method for synthesis of silver nanoparticles (AgNPs) and BC/AgNP composite using bacterial cellulose (BC) nanofibers soaked in AgNO3 solution under induction action of solar radiation. The photochemical reduction of silver Ag + ions into silver nanoparticles (Ag-o) was confirmed using UV visible spectra; the surface plasmon resonance of synthesized AgNPs was localized around 425 nm. The mean diameter of AgNPs obtained by DLS analysis was 52.0 nm with a zeta potential value of - 9.98 mV. TEM images showed a spherical shape of AgNPs. The formation of BC/AgNP composite was confirmed by FESEM, EDX, FTIR, and XRD analysis. FESEM images for BC showed the 3D structures of BC nanofibers and the deposited AgNPs in the BC crystalline nanofibers. XRD measurements revealed the high crystallinity of BC and BC/AgNP composite with crystal sizes of 5.13 and 5.6 nm, respectively. BC/AgNP composite and AgNPs exhibited strong antibacterial activity against both Gram-positive and Gram-negative bacteria. The present work introduces a facile green approach for BC/AgNP composite synthesis and its utility as potential food packaging and wound dressings, as well as sunlight indicator application. [GRAPHICS] .
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