Comparison of the characteristics of gold nanoparticles synthesized using aqueous plant extracts and natural plant essential oils of Eucalyptus globulus and Rosmarinus officinalis

Application of Silver Nanostructures Synthesized by Cold Atmospheric Pressure Plasma for Inactivation of Bacterial Phytopathogens from the Genera Dickeya and Pectobacterium

“…Additionally, the presence of C=C double bonds in the chemical structure of PEC was confirmed by the observation of a band at 1015 cm −1 . Moreover, bands situated at 955, 893, and 825 cm −1 , indicative of the wagging vibrations of the CH 2 group, were recorded [ 3 ]. In the ATR FT-IR spectrum of the PEC-AgNPs following dc-APGD treatment, the low intensity of the stretching vibrations of ‒OH (associated with the band at 2933 cm −1 ) and of the C=O groups might suggest the formation of hydrogen bonds between the surface of AgNPs and PEC ( Figure 4 B).…”

“…Recently, special emphasis has been placed on biological synthesis methods, as they require neither toxic reducing or capping agents nor radioactive irradiation. The biological synthesis procedures instead take advantage of plant extracts or essential oils as the reducing and stabilizing compounds, or involve soil microorganisms that are capable of synthesizing AgNPs from an appropriate precursor [ 1 , 3 , 4 ].…”

Tuning Optical and Granulometric Properties of Gold Nanostructures Synthesized with the Aid of Different Types of Honeys for Microwave-Induced Hyperthermia

“…Several studies demonstrate that reducing sugars and phenolic compounds play a significant role in green synthesis of AuNPs [28,33,55]. Their contribution to the formation of AuNPs is likely associated with their reducing and stabilizing properties [55].…”

“…There are a variety of natural products reported to be suitable for green synthesis of AuNPs. Accordingly, aqueous leaf extracts prepared from Mentha piperita [28], Melissa officinalis [28], Salvia officinalis [28], Terminalia catappa [29], Rosa rugosa [30], Hibiscus rosa sinensis [31], Cinnamomum camphora [32], Eucalyptus globulus [33], Rosmarinus officinalis [33], Ziziphus zizyphus [34], and Plumbago zeylanica [35], aqueous extracts originated from blackberries, blueberries, and pomegranates [36], in addition to essential oils collected from Eucalyptus globulus [33], Rosmarinus officinalis [33], Anacardium occidentale [37], Curcuma pseudomontana [38], and some food products, including Punica granatum juices [39], coffee Arabica infusions [40], and cacao powder beverages [41] were involved in the production of AuNPs. To the best of our knowledge, only a few research groups have attempted to produce honey-based NFs containing Au nanostructures [42,43,44].…”

Plant Extracts Activated by Cold Atmospheric Pressure Plasmas as Suitable Tools for Synthesis of Gold Nanostructures with Catalytic Uses

“…In 2019 and 2020 several plant species were used in AuNPs synthesis. This included, for example, Rosmarinus officinalis [ 23 ], Salvia hispanica [ 24 ], Eucalyptus globulus [ 23 ], Mentha piperita [ 24 ], Melisa officinalis [ 24 ], Pimpinella anisum [ 25 ], Jasminum auriculatum [ 26 ], Hubert ambavilla [ 27 ], Lactuca indica [ 28 ], Solanum nigrum [ 29 ], Brassica oleracea [ 30 ] and Commiphora wightil [ 31 ] plant species that were a source of reducing and capping agents. Most of the so-obtained Au nanostructures were applied as catalysts [ 26 , 28 , 29 , 30 ] in the different catalytical processes, for example, catalytic reduction of 4-NP to 4-aminophenol (4-AP) [ 26 , 29 , 30 ] and catalytic reduction of methyl orange [ 28 ].…”