Design of Green Silver Nanoparticles Based on Primula Officinalis Extract for Textile Preservation

Abstract

The present study aims to bring an addition to biomass resources valorization for environmental-friendly synthesis of nanoparticles. Thus, the green synthesis of silver nanoparticles (AgNPs) was performed, using a novel and effective reducing agent, Primula officinalis extract. The synthesis was optimized by monitoring the characteristic absorption bands, using UV–Vis spectroscopy, and by evaluating the size and physical stability. The phenolic consumption was established using Folin-Ciocâlteu method (1.40 ± 0.42 mg, representing ~5% from the total amount of poly--phenols) and the antioxidant activity was evaluated using chemiluminescence and TEAC methods. The optimum ratio extract to Ag ions was 1:3, for which the AgNPs presented a zeta potential value of −29.3 ± 1.2 mV and particles size of 5-30 nm. For characterization, EDS and XRD techniques were used, along with microscopy techniques (TEM). The AgNPs dispersions were applied on natural textile samples (cotton and wool), as a novel antimicrobial treatment for textile preservation. The treated fabrics were further characterized in terms of chromatic parameters and antimicrobial effect against Escherichia coli, Staphylococcus aureus, Bacillus subtilis, and Penicillium hirsutum strains. The high percentages of bacterial reduction, >99%, revealed that the AgNPs produced are a good candidate for textiles preservation against microbial degradation.

Phytochemical Synthesis of Silver Nanoparticles and Their Antimicrobial Investigation on Cotton and Wool Textiles

“…The calculated Trolox equivalent of the pure extract was 17.6 ±1.7 µmol/g of the dry plant. The variation of the chemiluminescence correlates with the results obtained in our previous study [31]. This behavior is attributed to the AgNPs' ability to scavenge shortlived free radicals, which is higher compared to that of the AgNPs.…”

“…Figure 14 illustrates the color change of the textile samples and indicates a slight shift of the color towards yellow for the cotton sample, while for wool, the color is insignificantly changed. Compared to our previous study, the value of the total color change obtained for cotton was lower when Stellaria media extract was used for the synthesis, while the wool sample presented a similar value [31]. In addition, when compared to other studies, the total color change obtained in the present work is considerably When treating cotton with AgNPs produced using the biomass filtrate of the A. alternata fungus strain, the color shift values varied from 13.4 to 41.8 [61].…”

“…This behavior is attributed to the AgNPs' ability to scavenge short-lived free radicals, which is higher compared to that of the AgNPs. The variation of the chemiluminescence correlates with the results obtained in our previous study [31]. This behavior is attributed to the AgNPs' ability to scavenge shortlived free radicals, which is higher compared to that of the AgNPs.…”

“…In the case of B. subtilis, only 2 CFU were tracked on the wool sample, while the cotton sample presented a 100% bactericidal ratio. Compared to our previous study, the value of the total color change obtained for cotton was lower when Stellaria media extract was used for the synthesis, while the wool sample presented a similar value [31]. In addition, when compared to other studies, the total color change obtained in the present work is considerably lower.…”

“…Silver nanoparticles were produced through a photo-catalyzed reaction, according to the synthesis procedure described in our previous work [31]. The reaction mixtures were incubated in a sunlight-simulating chamber for 24 h; afterward, they were transferred into brown containers due to the photosensitivity of the synthesis.…”