Augmented photocatalytic, antibacterial and antifungal activity of prunosynthetic silver nanoparticles

Abstract

The present study has demystified the first and single step prunosynthesis of the spherical silver nanoparticles (AgNPs) from aqueous fruit extract of angiospermic plant, Prunus cerasifera, which has remarkable fusion of reducing cum stabilizing bioactive components (phenols, anthocyanins, carotenoids, flavonoids, organic acids, tannins and vitamins). Highly stable prunosynthetic AgNPs with 2.04 nm average crystallite size were synthesized in dark and in sunlight at optimized condition of temperature, time and P. cerasifera concentration. Synthesized nanoparticles were characterized through UV-Vis, FTIR, XRD, TGA, SEM and GCMS. Photocatalytic activity of prunosynthetic AgNPs was evaluated for methyl red, erichrome black, methyl blue, bromophenol blue and bromocresol green via UV-Vis. Degradation was achieved (<15 minutes) and expressed as pseudo-first-order kinetics. Prunosynthetic AgNPs demonstrated broad spectrum dose-dependent inhibition (in vitro) in comparison to standard antimicrobial drugs against pathogenic strains X. citri, P. syringae, A. niger, A. flavus, A. fumigatus, A. terreus, P. chrysogenum, F. solani and L. theobromae. Photocatalytic degradation results show the nanobioremediation potential of prunosynthetic AgNPs in indemnifying the persistent environmental pollutants. From the inherently higher inhibition rates for biomimetic prunosynthetic AgNPs, it is envisioned that these can be commercialized as future "green" nanobactericide and nanofungicide at industrial scale economically from nontoxic phytoconstituents.

Chromatographic identification of “green capping agents” extracted from Nasturtium officinale (Brassicaceae) leaves for the synthesis of MoO3 nanoparticles

“…The survey scan in Figure 3D Table 3 and in Figure 3C. Reported studies about plant mediated synthesis vividly proved the role of these phytochemicls in the synthesis of nano materials [6][7][8][9][10][11][12][13][14][15][16]. These compounds were significantly present in the methnolic extracts of N. officinale as well.…”

“…Thus, crude leaves extracts contain three important capping agents and most prominent and significant among them is Octodrine ( Figure 3C and Table 3). Reported studies about plant mediated synthesis vividly proved the role of these phytochemicls in the synthesis of nano materials [6][7][8][9][10][11][12][13][14][15][16]. Therefore, the spectroscopic and chromatographic delving of MoO 3 NPs in parallelism with spectroscopic and GC-MS inquisition of plant leaves, endorsed phytosynthesis as well as phytocapping of MoO 3 NPs.…”

“…The significance of its phytochemicals particularly of the phenolic compounds in various fields mainly in the nanoscience synthesis has been often neglected. In the nanomaterial synthesis, the phytochemicals are reported as noteworthy reducing and stabilizing agents [5][6][7][8][9][10][11]. Yet nanoscience is facing the challenges in the synthesis of nanoparticles with minimum agglomeration at a nanoscale [13,[33][34][35][36].…”

“…However, to overcome these synthesis problems environmentally friendly and cost effective reducing agents should be used. In the nanomaterial synthesis, the phytochemicals are reported as noteworthy reducing and stabilizing agents [5][6][7][8][9][10][11]. Moreover few articulations reported the implications of N. officinale phytochemicals for the synthesis of nanoparticles [10,11].…”

Effect of NiO on organic framework functionalized ZnO nanoparticles for energy storage application

“…Euphorbiaceae species are known to have important bioactive compounds such as phenols, tannins, flavonoids, erpenoids, lectin, cycloartenol, alkaloids, and neriifolins . Such phytocompounds are extensively investigated as reducing and capping agents to synthesize nanomaterials . Yet no manipulation has ever explained in‐depth mechanism and explored incorporated organic compounds in the synthesized nano‐material.…”