Silver nanoparticles synthesis using biomolecules of habanero pepper (Capsicum chinense Jacq.) as a reducing agent

Oseguera-Galindo, D. O.; Oceguera-Contreras, Edén; Pozas-Zepeda, Dario

doi:10.1117/1.jnp.14.036012

Cited by 3 publications

(5 citation statements)

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“…Previous studies indicated that the capsaicinrich extracts, which contain both aminogroups of capsaicin along with other candidate phenolic compounds, played a reducing and controlling role during the formation of Ag-NPs in the solutions of green C. annuum and C. frutescens fruits [20,21]. We also revealed a strong correlation between the content of these compounds and the antioxidative activity of extracts, produced by both extracting agents (Fig.…”

Section: Resultssupporting

confidence: 65%

Green synthesis of silver nanoparticles using aqueous extract of hot chili pepper fruits and its antimicrobial activity against Pseudomonas aeruginosa

Smirnov¹,

Kalynovskyi²,

Yumyna³

et al. 2021

Ukr.Biochem.J.

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Green synthesis of different nanoparticles using the plants aqueous extracts has several advantages over other methods due to the environmentally favorable nature of plants. moreover, such approach is also cost effective. This work describes the biosynthesis of silver nanoparticles (Ag-NPs) with the use of the aqueous extract of dry pericarps of hot chili peppers and cv. Carolina Reaper) with different levels of pungency and their antibacterial effect on the antibiotic resistant Pseudomonas aeruginosa. Phytochemical screening of pericarp tissues showed great distinction in contents of phenolic compounds and capsaicinoids as potential reducing agents wich correlated with total antiradical activity as analyzed by reduction of DPPH radicals. The biosynthesized Ag-NPs were characterized by UV-vis spectrophotometry and scanning electron microscopy (SEM). The average size of the nanoparticles in both samples was less than 25 nm. Іnitial concentration of both samples of Ag-NPs inhibited P. aeruginosa growth with equal efficiency.

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Section: Resultssupporting

confidence: 65%

Green synthesis of silver nanoparticles using aqueous extract of hot chili pepper fruits and its antimicrobial activity against Pseudomonas aeruginosa

Smirnov¹,

Kalynovskyi²,

Yumyna³

et al. 2021

Ukr.Biochem.J.

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“…Extracts obtained from different species of the genus Capsicum ( C. annuum , C. frutescens , C. baccatum and C. chinense ) were shown to be a good option for the green synthesis of nanoparticles [ 15 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ]. However, few studies have used extracts from a plant organ other than the fruit, such as leaves [ 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Gold and Silver Nanoparticles Using Leaf Extract of Capsicum chinense Plant

et al. 2022

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So far, several studies have focused on the synthesis of metallic nanoparticles making use of extracts from the fruit of the plants from the genus Capsicum. However, as the fruit is the edible, and highly commercial, part of the plant, in this work we focused on the leaves, a part of the plant that is considered agro-industrial waste. The biological synthesis of gold (AuNPs) and silver (AgNPs) nanoparticles using aqueous extracts of root, stem and leaf of Capsicum chinense was evaluated, obtaining the best results with the leaf extract. Gold and silver nanoparticles synthesized using leaf extract (AuNPs-leaf and AgNPs-leaf, respectively) were characterized by UV-visible spectrophotometry (UV-Vis), Fourier Transform Infrared Spectroscopy with Attenuated Total Reflection (FTIR-ATR), X-ray Photoelectron Spectroscopy (XPS), Ultra Hight Resolution Scanning Electron Microscopy coupled to Energy-Dispersive X-ray spectroscopy (UHR-SEM-EDX) and Transmission Electron Microscopy (TEM), and tested for their antioxidant and antimicrobial activities. In addition, different metabolites involved in the synthesis of nanoparticles were analyzed. We found that by the use of extracts derived from the leaf, we could generate stable and easy to synthesize AuNPs and AgNPs. The AuNPs-leaf were synthesized using microwave radiation, while the AgNPs-leaf were synthesized using UV light radiation. The antioxidant activity of the extract, determined by ABTS, showed a decrease of 44.7% and 60.7% after the synthesis of the AuNPs-leaf and AgNPs-leaf, respectively. After the AgNPs-leaf synthesis, the concentration of polyphenols, reducing sugars and amino acids decreased by 15.4%, 38.7% and 46.8% in the leaf extract, respectively, while after the AuNPs-leaf synthesis only reducing sugars decreased by 67.7%. These results suggest that these groups of molecules are implicated in the reduction/stabilization of the nanoparticles. Although the contribution of these compounds in the synthesis of the AuNPs-leaf and the AgNPs-leaf was different. Finally, the AgNPs-leaf inhibited the growth of S. aureus, E. coli, S. marcescens and E. faecalis. All of them are bacterial strains of clinical importance due to their fast antibiotic resistance development.

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“…Similarly, AgNO 3 concentrations had an effect on the intensification and in shifting the absorption peak to shorter wavelengths. This can be explained by the effect of the concentration and by a decrease in the nanoparticle size [9]. 3 (in the experimental section) measuring the absorbance 11 days after the preparation.…”

Section: Effect Of Agave Inulin On the Synthesismentioning

confidence: 99%

“…The most intensive abrasion occurs in the process of band extrusion, where the production mass is mixed, homogenized, vented, and formed [7]. This process is currently realized in horizontal band plungers, which are made up of a two-shaft mixer and a pug mill [8,9]. The production mass processed by these machines is at a humidity level of 20%-25% and is compressed in the pug mill head under 2-10 MPa of pressure.…”

Section: Introductionmentioning

confidence: 99%

“…Since then, many articles have reported different plants, leaves, and seeds as synthesis medium [7,8]. Green methods of silver nanoparticle synthesis consist of dilute silver nitrate (AgNO 3 ) as a precursor of silver ions (Ag + ) in a natural extract, where the biological molecules play an important role as a reducing and stabilizing agent, favoring nanoparticle formation [9].…”

Section: Introductionmentioning

confidence: 99%

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Eco-friendly high-rate formation of silver nanoparticles in agave inulin and its bactericidal effect against Escherichia coli

Sánchez-Vieyra,

Ojeda-Martínez,

Oceguera-Contreras

et al. 2023

Materials Science-Poland

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A high rate of silver nanoparticle formation, effective against the Escherichia coli (E. coli) bacterium, was obtained for the first time by means of a simple, eco-friendly, and low-cost green method in a solution of agave inulin. The study was carried out using the traditional method, in which the effects of the concentration of agave inulin, AgNO3, temperature, and pH on the synthesis were analyzed by UV-Vis spectroscopy and transmission electron microscopy (TEM). Most of the nanoparticles produced were spherical with a size less than 10 nm. In a sample with 20 mg/mL of agave inulin, 1 mM of AgNO3, T = 23°C, and pH = 12, the highest percentage of Ag+ ions available in the solution were reduced for the formation of nanoparticles in less than 40 min, whereas a sample prepared with 60 mg/mL of agave inulin, 10 mM of AgNO3, T = 23°C, pH = 12, and a storage time of 40 min showed a significant bactericidal effect on the E. coli strain. Agave inulin is a good biological compound for the formation of small, spherical silver nanoparticles. A pH of 12 favors a higher production speed of the silver nanoparticles and better use of the available Ag+ ions. In addition to this, the concentration of AgNO3 is a determining factor for increased formation of the nanoparticles necessary to bactericidal effect.

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Silver nanoparticles synthesis using biomolecules of habanero pepper (Capsicum chinense Jacq.) as a reducing agent

Cited by 3 publications

References 0 publications

Green synthesis of silver nanoparticles using aqueous extract of hot chili pepper fruits and its antimicrobial activity against Pseudomonas aeruginosa

Green synthesis of silver nanoparticles using aqueous extract of hot chili pepper fruits and its antimicrobial activity against Pseudomonas aeruginosa

Green Synthesis of Gold and Silver Nanoparticles Using Leaf Extract of Capsicum chinense Plant

Eco-friendly high-rate formation of silver nanoparticles in agave inulin and its bactericidal effect against Escherichia coli

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