Green synthesis of silver nanoparticles by using leaf extracts from the endemic Buddleja globosa hope

Abstract

Over the last few years, the green synthesis of nanoparticles (NPs) using plant extracts has emerged as a promising methodology for the fabrication of metallic NPs (especially silver, copper, and gold NPs), as it involves an easy, fast, low-cost, and environmentally friendly bioprocess. However, many factors affect the sizes and morphologies of NPs biosynthesized by this method, including the nature of the plant extract, among others. Therefore, the green synthesis of metal NPs with defined stability, size, and morphology distribution remains under evaluation. In the present study, we propose aqueous extracts from the endemic-medicinal plant Budleja globosa ("Matico") as an efficient bioproduct for the green synthesis of silver NPs (AgNPs). Experimental results indicate that room temperature, low concentrations of leaf extracts of B. globosa, and silver nitrate salt were sufficient to biosynthesize AgNPs with uniform size (16 nm) and shape distribution (spherical).

Plant-Based Synthesis of Silver Nanoparticles Using Aqueous Leaf Extract of Salvia officinalis: Characterization and its Antiplasmodial Activity

“…Other unidentified peaks observed in the XRD spectra could be to the presence of some organic compounds originating from the aqueous extract of S. officinalis [64]. Our findings are in agreement with the results of Carmona et al [58] and Kamaraj et al [65] in which the XRD peaks of the biosynthesized AgNPs were corresponds to (111), (200), (220) and (311) of cubic crystalline silver. field to be mindful about their safety.…”

“…In this study, S. officinalis extract showed several spectra that indicate the complex nature of the plant extract and our findings corroborates with the results of Al-Sheddi et al [35]. The spectra of S. officinalis extracts displayed broad and strong absorbance peak at 3248 cm -1 that corresponds to O-H vibration, which could be arising from phenolic compounds or carboxylic group in the extract [58]. The peak spectrum at 2918.9 cm -1 is assigned to the stretching vibration of CH 2 group [59], vibration peak at 1683 cm -1 indicates C=O stretching or C-N bending in the amide group respectively [35].…”

A Review: A Green Approach for the Synthesis of Silver Nanoparticles and Its Antibacterial Applications

“…The absorbance band at 2083/cm corresponds to the alkyne groups of phytoconstituents of the extract and the band at 1636/cm can be associated to C=0 stretching vibrations. The results were found to be similar to the other AgNPs synthesized by the different plant extract [24]. The FTIR spectra of the AgNPs which were synthesized using cannonball leaves exhibited prominent peaks at 2927/cm, 1631/cm, and 1383/cm.…”

Biological activities of biogenically synthesized fluorescent silver nanoparticles using Acanthospermum hispidum leaves extract

“…The scrutiny of the literature revealed some notable plant extract used for facile synthesis of AgNPs. For example, Nervalia zeylanica [31], Beutia monosperma [32], Leucaena leucocephala L. [18], Ipomoea digitata [33], Caesalpinia pulcherrima [34], Buddleja globosa [35], Sacha inchi [36], Peganum harmala [37], unripe fruit of Annona reticulata [38], Ziziphora tenuior [39], Caralluma fimbriata [40], root of Acanthospermum hispidum [41], Pistacia atlantica [42] and Rosa Chinensis L. [43] has been already reported.…”