Light-emitting diode (LED)-directed green synthesis of silver nanoparticles and evaluation of their multifaceted clinical and biological activities

Abstract

LEDs-mediated green synthesis of silver nanoparticles, their characterization and biological applications.

Differential impact of biogenic and chemically synthesized zinc oxide nanoparticles on anti-aging, anti-oxidant and anti-cancerous activities: a mechanism based study

“…Recently, Anjum et al , and Shah et al , reported harmonizing results indicating that ZnONPs had the potential to be utilized as anti-aging agents. 39,41 The statistical analysis showed that IV-ZnONPs had significantly greater anti-aging potential as compared to CS-ZnONPs.…”

“…The CUPRAC assay was carried out in accordance with Anjum et al , protocol. 41 1 mL of 99.99% copper chloride, 1 mL of 1 M acetate buffer (pH 7), and 1 mL of neocuproine solution were mixed. After adding 1 mL of distilled water to 1 mL of ZnONPs, the mixture was allowed to incubate for 30 minutes at room temperature.…”

“…A large number of reports have demonstrated BSL assay to be a reliable method for determining the biocompatibility of nanoparticles. 33,41,43,54 The lethal concentration 50 (LC50) for substances o1.0 mg mL À1 is considered highly toxic, 1.0-10.0 mg mL À1 is considered toxic, 10.0-30.0 mg mL À1 is considered moderately toxic, 30.0-100.0 mg mL À1 is classified as mildly toxic, and 4100.0 mg mL À1 is deemed nontoxic. 72 In our study, both types of ZnONPs were found to be moderately toxic toward brine shrimp, the LC50 values between 15.0 and 18.0 mg mL À1 were observed, as shown in Fig.…”

Advances in the Toxicity Assessment of Silver Nanoparticles Derived from a Sphagnum fallax Extract for Monolayers and Spheroids

“…The surface properties of silver nanoparticles obtained with citrate or the sphagnum extract were evaluated using FT-IR spectroscopy. This technique is often used to identify the functional groups that are present in active plant ingredients [ 32 ]. In the IR spectrum of the sphagnum extract ( Figure 1 A), the wide and intense peak in the region of 3500–2500 cm −1 indicates the presence of hydroxyl groups, and the very intense band at 1051 cm −1 most likely belongs to C-O stretching vibrations in alcohol or ether bonds.…”

“…These cells are well-studied and have a high rate of cell division, making them ideal for this type of research [ 50 , 51 ]. Moreover, AgNPs are widely used in consumer aerosol products due to their antibacterial ability; so, there is a risk of their ingestion and deposition in the respiratory tract [ 32 ]. Initially, standard colorimetric assays, the MTT test and the rezazurin reduction method, were used to assess the cytotoxic effect of silver nanoparticles on mammalian cells.…”