Aqueous leaf extracts of Cnidoscolus chayamansa (Mayan chaya) cultivated in Yucatán México. Part II: Uses for the phytomediated synthesis of silver nanoparticles

Green synthesis of silver nanoparticles via Cynara scolymus leaf extracts: The characterization, anticancer potential with photodynamic therapy in MCF7 cells

“…The appearance of a brown-orange coloring is evidence of formation of the AgNPs. The characteristic peak around 400–450 nm is specific for AgNPs [31, 32]. Fig 2A shows UV- Vis spectra recorded from Cynara scolymus leaf extracts and different silver nitrate concentrations.…”

Populus ciliata mediated synthesis of silver nanoparticles and their antibacterial activity

“…UV‐visible spectrum (Figure 2a) depicted absorbance maxima at 445 nm which indicated the photosensitivity of the synthesized AgNPs in UV‐visible region. In literature, the UV absorption band of AgNPs has been reported between 400 and 450 nm (Dzul‐Erosa et al, 2018; Erdogan et al, 2019). Several researchers have reported that the peak maxima of AgNPs appear around 450 nm in the UV‐visible spectrum (Patil, Chaudhari, Paradeshi, Mahajan, & Chaudhari, 2017).…”

“…Studies have also described that AgNPs may cause damage to the cell membranes resulting in structural modifications, which make bacteria more permeable (Anbu et al, 2019). According to one study which used Escherichia coli (Dzul‐Erosa et al, 2018) has established that AgNPs accretion on the membrane reduces integrity of the bilayer structure which inclines it toward an increase in permeability and finally, bacterial cell's death occurs (Nakamura et al, 2019). AgNPs could also create reactive oxygen species (hydroxyl radical, singlet oxygen 1 O 2 , and peroxide radical) which cause many toxic effects to bacterial cell.…”

Effect of silver nanoparticles, synthesized from fleshy stem and leaves extract of Brassica campestrisL., on Alternari lini inhibition

“…Characteristics surface plasmone absorption peak was observed between 415 to 455 nm by UV-visible spectrophotometer (as shown in Figure 2). In the literature, absorption peak of nanoparticles is observed at 400 to 450 nm (Ajitha et al, 2015) which is specific for silver nanoparticles (Dzul-Erosa et al, 2018;Patil & Kim, 2016).…”