Allium sativum@AgNPs and Phyllanthus urinaria@AgNPs: a comparative analysis for antibacterial application

Abstract

The combination of AgNPs and plant extracts provides synergic antibacterial effect on various E. coli strains.

Multilayer immobilizing of denitrifying Bacillus sp. and TiO2–AgNPs on floating expanded clay carrier for co-treatment of nitrite and pathogens in aquaculture

“…2c and S3 † ). TiO 2 –Ag displayed a distinctive absorption peak at 410 nm corresponding to the surface plasmon resonance peak of AgNPs, 46 suggesting that Ag was incorporated to TiO 2 –AgNPs, which was consistent with the TEM and SEM results. Interestingly, the introduction of Ag into TiO 2 NPs shifted the absorbance threshold of TiO 2 –AgNPs into the visible light region, at 700–800 nm, due to the surface plasmon resonance characteristic of the AgNPs.…”

“…Besides, the peaks located at 2 θ values of 38°, 44°, and 64° could be indexed to (111), (200), and (220) diffractions of AgNPs with the face-centered cubic structure (JCPDS 4-0783), respectively. 46 The Ag peaks nearly completely coincided with the TiO 2 anatase phase peaks. As a result, the peaks in TiO 2 –AgNPs are similar, indicating that the TiO 2 was efficiently modified with AgNPs.…”

Stixis scandensleaf extract-loading ZnO nanoparticles for porcine epidemic diarrhea virus (PEDV) treatment

“…Similar observations were made when comparing the release of allicin and phyllanthin from their Ag nanoparticles. 51 TA is more loaded and less released in the nanoformulations than TP ( Table 3 ), suggesting that TA may contribute more to the biological activities of the nanoformulations than TP. As pointed out in a review article, some alkaloids have EC 50 inhibitory concentrations against PEDV of 13.41 ± 1.13 μM, 4.49 ± 0.67 μM, and 6.17 ± 0.50 μM, respectively.…”

Green Preparation and Antibacterial Activity Evaluation of AgNPs-Blumea balsamifera Oil Nanoemulsion

“…AgNPs with an average particle size of <100 nm have attracted more continuous attention due to their having more excellent antibacterial properties than free silver ions [15]. To overcome the limitations of physical and chemical procedures, more and more hopeful green synthesis methods have been developed [16]. In recent years, researchers have found that the plant extracts-mediated preparation of NPs was one of the green ways to synthesize AgNPs [17].…”

“…Yang et al [18] reported that the antibacterial activity of AgNPs and Lonicera japonica Thunb extracts were significantly higher than that of pure AgNPs or herbal extracts. Phan et al [16] also found that the two herbal extracts of Allium sativum and Phyllanthus urinaria can be used to synthesize AgNPs, and the combination of herb antibiotics and AgNPs showed an antibacterial effect on E. coli in vitro. TS, a glycoside compound extracted from Camellia seeds, is not only a natural non-ionic surfactant with excellent properties that can improve the solubility and bioavailability of insoluble drugs, but also has various pharmacological activities such as the inhibition of bacterial growth, anti-oxidation, and anti-inflammation [19,20].…”