Antimicrobial and antioxidant activity of AgNPs stabilized with Calendula officinalis flower extract

Zhangabay, Zhanat; Berillo, Dmitriy

doi:10.1016/j.rsurfi.2023.100109

Cited by 13 publications

(13 citation statements)

References 40 publications

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“…The average particle size (z-average) of Aq-AgNPs and Alk-AgNPs were 95.9 nm and 54.04 nm, respectively, with PI values of 0.22 and 0.464, according to the data. The z-average of Alk-AgNPs is smaller than that of Aq-AgNPs, which could be attributed to the increased Brownian motion of silver ions and, therefore, the creation of bigger particles of Aq-AgNPs [ 41 ]. In addition, the use of NaOH for pH adjustment might contribute to the conversion of AgNO 3 into brown Ag 2 O precipitate and further producing smaller NPs [ 42 ].…”

Section: Discussionmentioning

confidence: 99%

The Antifungal Activities of Silver Nano-Aggregates Biosynthesized from the Aqueous Extract and the Alkaline Aqueous Fraction of Rhazya stricta against Some Fusarium Species

Al-Otibi

2023

Nanomaterials

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Rhazya stricta is a major medicinal species used in indigenous medicinal herbal medications in South Asia, the Middle East, Iran, and Iraq to treat a variety of ailments. The current study aimed to investigate the antifungal properties of biosynthesized silver nanoparticles (AgNPs) made from R. stricta aqueous extract and its alkaline aqueous fraction. Fourier transform infrared spectroscopy (FTIR), UV-vis spectrophotometry, dynamic light scattering (DLS), and transmitted electron microscopy (TEM) were used to characterize AgNPs. The produced extracts and AgNPs were tested for their antifungal efficacy against four Fusarium spp. All of the characterization experiments proved the biosynthesis of targeted AgNPs. FTIR showed a wide distribution of hydroxyl, amino, carboxyl, and alkyl functional groups among all preparations. The DLS results showed that the produced Aq-AgNPs and the Alk-AgNPs had an average size of 95.9 nm and 54.04 nm, respectively. On the other hand, TEM results showed that the Aq-AgNPs and Alk-AgNPs had average diameters ranging from 21 to 90 nm and 7.25 to 25.32 nm. Both AgNPs absorbed UV light on average at 405 nm and 415 nm, respectively. Regarding the fungicidal activity, the highest doses of Aq-extract and Aq-AgNPs inhibited the mycelial growth of F. incarnatum (19.8%, 87.5%), F. solani (28.1%, 72.3%), F. proliferatum (37.5%, 75%), and F. verticillioides (27.1%, 62.5%), respectively (p < 0.001). Interestingly, the Alk-fraction had stronger inhibition than the biosynthesized AgNPs, which resulted in complete inhibition at the doses of 10% and 20% (p < 0.001). Furthermore, microscopic analysis demonstrated that both AgNPs caused obvious morphological alterations in the treated organisms when compared to the control. In conclusion, R. stricta’s Aq-extract, alkaline fraction, and their biosynthesized AgNPs show substantial antifungal efficacy against several Fusarium spp. It is the first study to highlight the prospective biological activities of R. stricta Aq-extract and its alkaline fraction against F. incarnatum, F. proliferatum, and F. verticillioides. In addition, it is the first opportunity to deeply investigate the ultrastructural changes induced in the Fusarium species treated with R. stricta crude Aq-extract and its biosynthesized AgNPs. More studies are required to investigate their biological effect against other Fusarium or fungal species.

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Section: Discussionmentioning

confidence: 99%

The Antifungal Activities of Silver Nano-Aggregates Biosynthesized from the Aqueous Extract and the Alkaline Aqueous Fraction of Rhazya stricta against Some Fusarium Species

Al-Otibi

2023

Nanomaterials

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“…Next, 10 mL (equivalent to 7 mg) of a freshly prepared sodium borohydrate solution was added with continuous stirring for several hours. The resulting AgNPs suspension was then stored at +4 • C for future use [20].…”

Section: Agnps Stabilised By a Terrae-albae Extract Synthesismentioning

confidence: 99%

“…As a result, the final cell concentration was anticipated to be approximately 2.6 × 10 8 CFU/mL. These preparations were then kept at room temperature for 24 h, after which they were plated onto agar broth plates and kept at 37 • C overnight [20]. The growth of bacteria was checked visually (Figure 6).…”

Section: Assessment Of Antibacterial Effects Of Artemisia Extractsmentioning

confidence: 99%

“…Enhancement of the AgNPs SPR peak after the additional treatment, which indicates the completion of the redox reaction, was not observed. Previously, the mechanism of AgNP stabilization by plant extract and the influence of various trigger parameters (UV or microwave irradiation, pH, temperature) on AgNP inducing have been discussed [20]. The research focused on examining the production of silver nanoparticles with sizes ranging from 35 to 60 nanometers, which were created using an aqueous extract derived from Eclipta prostrata and subjected to ultrasonic treatment.…”

Section: Agnps Synthesis and Characterizationmentioning

confidence: 99%

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Antimicrobial Activity of Silver Nanoparticles Stabilized by Liposoluble Extract of Artemisia terrae-albae

Dyusebaeva,

Berillo,

Berganayeva

et al. 2023

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The global spread of multi-resistant pathogenic microorganisms has significantly complicated the treatment of chronic wounds. The development of novel drugs requires a substantial time investment. Hybrid materials such as nanoparticles stabilized by plant extracts are considered the best for creating efficient antiseptic substances. This paper is the first to discuss quantitative and qualitative analyses of the phytochemical constituents of the medicinal plant Artemisia terrae-albae, collected in Kazakhstan. The antimicrobial activity of the extracts, as well as of silver nanoparticles (AgNPs) stabilized by Artemisia terrae-albae extract, were evaluated. AgNPs were characterized by an average size of 82 nm or larger with a negative surface charge. TEM analysis of the obtained suspension showed a nonuniform structure of particles synthesized at a low concentration of ethyl acetate solvent in water. The SPR peak of AgNPs@Art aq. extract was detected at 420 nm, while any clear SPR peak was observed for AgNPs@Art ethylacetate extract. Diluted Artemisia terrae-albae extracts did not exhibit pronounced antimicrobial activity due to the poor solubility of compounds in water. Nevertheless, the AgNPs@Art aq. and AgNPs@Art EtAc. extracts possessed antimicrobial activity against the Pseudomonas aeruginosa ATCC 9027, Staphylococcus aureus ATCC 6538, Escherichia coli (ATCC 8739), and Candida albicans ATCC 10231 strains.

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“…Secondary metabolites synthesized by the plants are used to treat a number of diseases (Butnariu and Coradini, 2012;Ashwlayan et al, 2018;Ak et al, 2020). In recent years a number of metal nanoparticles were obtained using C. officinalis extracts, in particular, titanium (Wei et al, 2021), gold (Zhao et al, 2022), and silver (Zhangabay and Berillo, 2023), and their possible practical application in pharmacology and medicine was studied. Earlier C. officinalis hairy roots were used for the production of secondary metabolites, as well as for studying the effect of various factors on their growth and biosynthetic activity (Długosz et al, 2013;Al-Abasi et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Silver nanoparticles initiation using Calendula officinalis L. hairy root extracts

Matvieieva

2023

Agrobiodivers Improv Nutr health life Qual

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Nanoparticles (NPs) of various metals, in particular, copper, silver, gold, zinc, and titanium, are now considered promising and multifunctional components for biomedical applications. For the formation of nanoparticles, a "green" synthesis method has been developed based on the use of plant extracts to initiate nanoparticles. This method is considered simple and safe as it involves the use of extracts from well-studied plants. The main condition for the possibility of "green" synthesis of metal nanoparticles is the presence of the similar activity in the extracts. The possibilities of using Calendula officinalis L. hairy root extracts for the synthesis of silver nanoparticles (AgNPs) and its dependence on flavonoid concentration in the extracts were studied in this work. The extracts obtained with the use of 70% ethanol had the highest reducing activity in comparison with the aqueous extracts. Reducing activity of the extracts correlated with the concentration of flavonoids. The presence of nanoparticles of different sizes was confirmed by using transmission electron microscopy. Colloid solutions of AgNPs obtained using the extract with a higher content of flavonoids had significantly higher absorption values in the range of 420-440 nm, which is characteristic of AgNPs. An increase in absorption over time (up to two weeks) indicates long-term preservation of reducing activity in the mixture with AgNO 3 . The smallest AgNPs (0.33… 7 nm) were formed when an aqueous extract was used, and the largest ones (up to 41.83 nm) with an extract obtained with 96% ethanol. Thus, it is the aqueous C. officinalis extract that should be chosen if it is necessary to obtain silver nanoparticles of small size.

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Antimicrobial and antioxidant activity of AgNPs stabilized with Calendula officinalis flower extract

Cited by 13 publications

References 40 publications

The Antifungal Activities of Silver Nano-Aggregates Biosynthesized from the Aqueous Extract and the Alkaline Aqueous Fraction of Rhazya stricta against Some Fusarium Species

The Antifungal Activities of Silver Nano-Aggregates Biosynthesized from the Aqueous Extract and the Alkaline Aqueous Fraction of Rhazya stricta against Some Fusarium Species

Antimicrobial Activity of Silver Nanoparticles Stabilized by Liposoluble Extract of Artemisia terrae-albae

Silver nanoparticles initiation using Calendula officinalis L. hairy root extracts

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