Biomedical and Textile Applications of Alternanthera sessilis Leaf Extract Mediated Synthesis of Colloidal Silver Nanoparticle

Abstract

The aqueous extract of Alternanthera sessilis (As) acts as the precursors for the quick reduction of silver ions, which leads to the formation of silver nanoparticles. In the agar, well diffusion method of the K. pneumoniae shows the minimal inhibitory concentration of 12 mm against A. sessilis mediated silver nanoparticles (As-AgNPs) at 60 µg/mL concentration. Fabric treated with novel AS-AgNPs is tested against the Klebsiella pneumoniae and shows an inhibitory action of 12 mm with mixed cotton that determines the antimicrobial efficacy of the fabrics. Uv- visible spectrophotometer was performed, showing a surface plasmon resonance peak at 450 nm cm−1. FTIR shows the vibration and the infrared radiation at a specific wavelength of 500–4000 cm−1. The HR-TEM analysis showed the presence of black-white crystalline, spherical-shaped As-AgNPs embedded on the fabrics range of 15 nm–40 nm. In the scanning electron microscope, the presence of small ball-shaped As-AgNPs embedded on the fabrics at a voltage of 30 KV was found with a magnification of 578X. EDAX was performed in which the nanoparticles show a peak of 2.6–3.9 KeV, and it also reveals the presence of the composition, distribution, and elemental mapping of the nanoparticles. The cytotoxic activity of synthesized nanosilver was carried out against L929 cell lines, which show cell viability at a concentration of 2.5 µg mL−1. Cell proliferation assay shows no cytotoxicity against L929 cell lines for 24 h. In this study, the green synthesis of silver nanoparticles from A. sessilis appears to be a cheap, eco-friendly, and alternative approach for curing infectious ulcers on the floor of the stratum corneum. Nanotechnology conjoined with herbal therapeutics provides a promising solution for wound management.

Evaluation of bactericidal effects of silver hydrosol nanotherapeutics against Enterococcus faecium 1449 drug resistant biofilms

“…Silver (Ag) nanocomposites hold promises as bactericidal agents against the emerging MDR bacteria over conventional antibiotics and have been a potential antibiotic agent towards gram-positive and gram-negative bacteria including E. faecium and Escherichia coli ( Gong et al., 2007 ; Rai et al., 2009 ; Khan et al., 2020 ).. They have also exhibited a strong bactericidal activity against the gram-negative bacteria, such as Pseudomonas aeruginosa and Klebsiella pneumonia , as well as the gram-positive bacteria, such as Staphylococcus aureus ( Khan et al., 2011 ; Guzman et al., 2012 ; Rubio-Canalejas et al., 2022 ; Kabeerdass et al., 2022 ). Whether the bacterial species are gram-positive or gram-negative, Ag nanoparticles (NPs) manage to accumulate inside of the bacterial membrane and navigate across the peptidoglycan to cause cell damage ( Sondi and Salopek-Sondi, 2004 ).…”

Jute fibre reinforced unsaturated polyesters laminate preparation using eggshell filler

“…Unsaturated polyester was a matrix in the composite with jute fibre as a dispersed phase and eggshell as an interface. 11 Moreover, the incorporation of eggshells into the epoxy composites has been proven to showcase a diverging effect as the increase in the volume of it in the matrix increases the impact strength and the flexural capabilities but also decrease the tensile and shear strengths. 12 Furthermore, the addition of haritaki (Terminalia chebula) and tamarind seed's nanopowder into epoxy composite has also been proven to cause a considerable improvement in the load-carrying capacity of the reinforced composites.…”

“…It is also the cheapest and most widely available form of calcium in supplements. Unsaturated polyester was a matrix in the composite with jute fibre as a dispersed phase and eggshell as an interface 11 . Moreover, the incorporation of eggshells into the epoxy composites has been proven to showcase a diverging effect as the increase in the volume of it in the matrix increases the impact strength and the flexural capabilities but also decrease the tensile and shear strengths 12 .…”

Eco-Friendly Green Synthesis of Rubropunctatin Functionalized Silver Nanoparticles and Evaluation of Antibacterial Activity

“…Silver nanoparticles (AgNPs), the most common silver-containing nano-materials are processed to nano-scale silver particles [10]. As a kind of high-efficiency broad-spectrum antibacterial materials, silver nanoparticles have been broadly used in daily life, including antibacterial fabrics, water purification, antibacterial food packaging and antibacterial coatings [11][12][13][14][15][16]. However, the traditional method of AgNPs synthesis is to use organic phase synthesis method to obtain monodisperse nanoparticles, but organic solvents are generally toxic which pose a great threat to the environment and human body [17].…”