Phyto‐fabrication, purification, characterisation, optimisation, and biological competence of nano‐silver

Abstract

Published studies indicate that virtually any kind of botanical material can be exploited to make biocompatible, safe, and cost-effective silver nanoparticles. This hypothesis is supported by the fact that plants possess active bio-ingredients that function as powerful reducing and coating agents for Agþ. In this respect, a phytomediation method provides favourable monodisperse, crystalline, and spherical particles that can be easily purified by ultra-centrifugation. However, the characteristics of the particles depend on the reaction conditions. Optimal reaction conditions observed in different experiments were 70-95°C and pH 5.5-8.0. Green silver nanoparticles (AgNPs) have remarkable physical, chemical, optical, and biological properties. Research findings revealed the versatility of silver particles, ranging from exploitation in topical antimicrobial ointments to in vivo prosthetic/organ implants. Advances in research on biogenic silver nanoparticles have led to the development of sophisticated optical and electronic materials with improved efficiency in a compact configuration. So far, eco-toxicity of these nanoparticles is a big challenge, and no reliable method to improve the toxicity has been reported. Therefore, there is a need for reliable models to evaluate the effect of these nanoparticles on living organisms. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Antineoplastic and Cytotoxic Evaluation of Green AgNPs and Crude Extracts from Agave americana, Mentha spicata, and Mangifera indica Leaves

“…From the documented data, it was analyzed that the highest peak absorbance, i.e., ƛ max for green AgNPs, lies in the range of 350-500 nm. The ƛ max peak observed between 400 and 450 intensity corresponds to the presence of active polyphenols in plant extracts and excitation of reduced silver upon absorbance of UV-Vis rays [30].…”

Biogenic Synthesis of Silver Nanoparticles Using Rhazya stricta Extracts and Evaluation of Its Biological Activities

“…In United Arab Emirates, the plant decoction is used to treat several health ailments, including diabetes mellitus, fever, sore throat, inflammatory conditions, and helminthiasis [41]. The leaves of R. stricta are traditionally used as a purported bitter tonic [42,43] and cure for syphilis [42], chronic rheumatism [42], and associated forms of discomfort [41]. Branches are used as toothbrushes to alleviate toothaches [44].…”

An assessment of a nutritionally appropriate diet for adolescents’ nutrition

“…From the standpoint of the concept of economic and mathematical modeling, in order to meet the requirements for the nutrient composition and minerals in the grocery basket for a teenager, parents try to spend minimal money on purchased products. Meanwhile, they try to consider the rates of rational nutrition and get the opportunity to design food products with programmed functional and specialized characteristics [17][18][19][20][21][22].…”