Facile synthesis of silver nanoparticles and its antibacterial activity against Escherichia coli and unknown bacteria on mobile phone touch surfaces/computer keyboards

Bacterial Colonization in Computer Keyboards Posses Health Hazard

“…Our study results correlates with the recent findings in a teaching university in Pakistan where it was found that computer keyboards are breeding ground for pathogenic bacteria [7]. More recently, E. coli was found abundant on computer keyboard surfaces [8]. Similarly, in 2015, Pseudomonas species, S. aureus, S. epidermis, E. coli, Klebsiella species and S. haemolytics were found to present in computer keyboards [9].…”

Antimicrobial and Catalytic Activities of Green Synthesized Silver Nanoparticles Using Bay Laurel (<i>Laurus nobilis</i>) Leaves Extract

“…The intensity of the peak at the (111) plane was greater than the other peaks, suggesting that this plane was the predominant one. According to Scherrer's formula, the average sizes of AgNPs synthesized by leaf extracts at room temperature and using microwave curing are 22 and 28 nm, respectively [18] [33]. The presence of organic compounds of BLE extract on the surface of the nanoparticles was investigated using FTIR.…”

“…The uses of toxic and hazardous chemicals, in addition to high cost and power consumption are the main drawbacks of methods used in the preparation of silver nanoparticles [4]. AgNPs were synthesized using a variety of plant extracts as reducing and stabilizing agents such as Ziziphus Jujuba leaf [5], Megaphrynium macrostachyum leaf [6], Myrmecodia pendan (Sarang Semut plant) [7], Neem (Azadirachta indica) leaves [8], Bergenia ciliata [9], sulfated polysaccharide extract from Sargassum siliquosum, a brown alga [10], Eucalyptus oleosa [11], Annona squamosa L. [12], Pistacia atlantica [13], Pongamia pinnata [14], the cell free filtrate of marine sediment fungal species from the Southern peninsular coastal region of India [15], isoamyl acetate isolated from Annona squamosa [16], Eucalyptus camaldulensis [17], cellulose extract and sucrose [18], Chomelia asiatica plant leaves [19], aqueous Raphanus sativus root [20], chamomile [21], Commiphora caudata leaves [22], Staphylococcus epidermidis [23], and L-cysteine [24]. Furthermore, extract of Manilkara zapota (L.) seeds [25], Canna edulis Ker-Gawl [26] and aqueous extract of turmeric powder [27] were used to enhance the green synthesis of AgNPs.…”

جسيمات الفضة متناهية الصغر من مستخلصات النبات

“…Also, in a study examined the antibacterial potential of silver nanoparticles on the pathogenic bacteria strains P. aeruginosa, resistant E. coli, and Streptococcus pyogenes [81]. Biosynthetic AgNPs showed high antibacterial activity against biofilm-forming S. epidermidis strain [82] and against E. coli [83]. These silver nanoparticles could exhibit inhibition to bacterial growth immediately when they contact them, by killing bacteria [84].…”