Characterization, antibacterial, and neurotoxic effect of Green synthesized nanosilver using <i>Ziziphus spina</i> Christi aqueous leaf extract collected from Riyadh, Saudi Arabia

El-Ansary, Afaf; Warsy, Arjumand S.; Daghestani, Maha H.; Merghani, Nada M.; Al-Dbass, Abeer; Bukhari, Wadha; Al-Ojayan, Badryah; Ibrahim, Eiman M.; Al-Qahtani, Asma M; Bhat, Ramesa Shafi

doi:10.1088/2053-1591/aaaf5f

Cited by 13 publications

(6 citation statements)

References 51 publications

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“…Ziziphyus jujuba, a plant locally grown in Saudi Arabia and used extensively for its health benefits. The medicinal properties of Ziziphyus tree, also known as Nabq or Sidr, were also recognized and have been in use in Pharaonic carpentry, diet, and medicine (El-Ansary et al, 2018). Z. spina-christi is a medicinal plant and its leaf extract (peptide and cyclopeptide alkaloids) has neuroprotective and therapeutic roles against pentylenetetrazol convulsant effect (Waggas et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Biochemical profile, antioxidant capacity and allelopathic effects from five Ziziphyus spina-christi (L.) provenances growing wild in Saudi Arabia

Naghmouchi

Alsubeie

2020

Not Bot Horti Agrobo

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The aim of this work was to evaluate phenolic profile, antioxidant capacity and allelopathic effects of six Ziziphyus spina-christi provenances in Saudi Arabia. Total phenols, flavonoids, tannins and antioxidant activity were evaluated. Total phenols, condensed tannins and total flavonoids were present at levels of 62.29 mg GAE/g DM, 16.69 mg CE/g DM and 15.45 µg mg QE/g DM, respectively. The high antioxidant activity (0.15 mg/ml) was noted in Mecca Road provenance. The highest germination, shoots and radicle lengths of tested species were observed in At-taif provenance. Z. spina-christi leaf extracts may be suggested in foods and pharmaceutical industries. Leaf extracts could also provide a natural herbicide with a positive impact on the environment. Provenance of Jizan, Northern Borders and Mecca Road were shown to be particularly effective in antioxidant capacity, while Provenance of Riyadh and Northern Borders shown to have the best allelopathic activity.

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Section: Introductionmentioning

confidence: 99%

Biochemical profile, antioxidant capacity and allelopathic effects from five Ziziphyus spina-christi (L.) provenances growing wild in Saudi Arabia

Naghmouchi

Alsubeie

2020

Not Bot Horti Agrobo

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“…AgNPs coated with plant material are not as harmful as AgNO 3 [15]. Several leaves are currently being used for synthesising nanoparticles [16, 17]. However, nanoparticles synthesised from the same plants, but from different regions, usually show different characteristics [18, 19] since the same plants grown under different environmental conditions show significant differences in their primary and secondary metabolites [20].…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of silver nanoparticles using Azadirachta indica leaves: characterisation and impact on Staphylococcus aureus growth and glutathione‐S‐transferase activity

Bhat

Almusallam

Daihan

et al. 2019

IET nanobiotechnol.

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Silver nanoparticles (AgNPs) are toxic to various microbes, but the mechanism of action is not fully understood. The present report explores Azadirachta indica leaf extract as a reducing agent for the rapid biosynthesis of AgNPs. The effects of AgNPs on the growth, glutathione-S-transferase (GST) activity, and total protein concentration in Staphylococcus aureus were investigated, as was its antibacterial activity against seven other bacterial strains. Nanoparticle synthesis was confirmed by the UV-Vis spectrum and colour change of the solution. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), dynamic light scattering (DLS), zeta potential analysis, and infrared spectroscopy were used to characterise the synthesised nanoparticles. The UV-Visible spectrograph showed an absorbance peak at 420 nm. DLS analysis showed an average AgNP size of 159 nm and a Polydispersity Index of 0.373. SEM analysis showed spherical particle shapes, while TEM established an average AgNP size of 7.5 nm. The element analysis profile showed small peaks for calcium, potassium, zinc, chlorine, with the presence of oxygen and silver. AgNPs markedly affected the growth curves and GST activity in treated bacteria, and produced moderate antibacterial activity. Thus AgNPs synthesised from A. indica leaves can interrupt the growth curve and total protein concentration in bacterial cells.

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“…To overcome these challenges, researchers get encouraged by the biological approach to fabricating nanoparticles by using extracts from organisms such as plants [ 20 ], bacteria [ 21 ], fungi [ 22 ], and algae [ 23 ] for reducing metal salts to metal nanoparticles. The stability of these nanoparticles is enhanced by capping with biomolecules present in the organism [ 24 ]. This method is easy to handle and a bit economical compared to physical and chemical methods.…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have reported biological approaches to nanoparticle production from edible mushrooms [ 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ]. Edible mushrooms are rich in protein and are enriched with essential amino acids.…”

Section: Introductionmentioning

confidence: 99%

Biogenic Silver Nanoparticles from Two Varieties of Agaricus bisporus and Their Antibacterial Activity

et al. 2022

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Agaricus bisporus, the most widely cultivated mushroom, is safe to eat and enriched with protein and secondary metabolites. We prepared silver nanoparticles (AgNPs) from two varieties of A. bisporus and tested their antibacterial activity The synthesized AgNPs were initially confirmed by UV-Vis spectroscopy peaks at 420 and 430 nm for white and brown mushrooms AgNPs, respectively. AgNPs were further characterized by zeta sizer, transmission electronic microscopy (TEM), Fourier transform infrared (FTIR), and energy-dispersive X-ray spectroscopy (EDX) prior to antibacterial activity by the well diffusion method against six bacterial strains which include Staphylococcus aureus, Staphylococcus epidermis, Bacillus subtilis, Escherichia coli, Salmonella typhi, and Pseudomonas aeruginosa. TEM results revealed a spherical shape with an average diameter of about 11 nm in the white mushroom extract and 5 nm in the brown mushroom extract. The presence of elemental silver in the prepared AgNPs was confirmed by EDS. The IR spectrum of the extract confirmed the presence of phenols, flavonoids, carboxylic, or amide groups which aided in the reduction and capping of synthesized AgNPs. The AgNPs from both extracts showed almost the same results; however, nanoparticles prepared from brown mushrooms were smaller in size with strong antibacterial activity.

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Characterization, antibacterial, and neurotoxic effect of Green synthesized nanosilver using Ziziphus spina Christi aqueous leaf extract collected from Riyadh, Saudi Arabia

Cited by 13 publications

References 51 publications

Biochemical profile, antioxidant capacity and allelopathic effects from five Ziziphyus spina-christi (L.) provenances growing wild in Saudi Arabia

Biochemical profile, antioxidant capacity and allelopathic effects from five Ziziphyus spina-christi (L.) provenances growing wild in Saudi Arabia

Biosynthesis of silver nanoparticles using Azadirachta indica leaves: characterisation and impact on Staphylococcus aureus growth and glutathione‐S‐transferase activity

Biogenic Silver Nanoparticles from Two Varieties of Agaricus bisporus and Their Antibacterial Activity

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