In-vitro antioxidant and antimicrobial activities of metal nanoparticles biosynthesized using optimized Pimpinella anisum extract

Zayed, Mervat F.; Mahfoze, Ranaa A.; El-Kousy, Salah M.; Al-Ashkar, Emad A.

doi:10.1016/j.colsurfa.2019.124167

Cited by 73 publications

(48 citation statements)

References 40 publications

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“…The biosynthesis of metals nanoparticles using plant extracts is seen as an alternative technique to the chemical, physical, and the microbial techniques [20] because it is facial, green-compliance, inexpensive, and suitable for large-scale production [21,22]. Beside the aforementioned advantages, metals nanoparticles produced using plant extracts as the reducing and stabilizing agents are found to be very stable and safe for packaging and human therapeutic applications [20,[22][23][24]. For instance, Zayed et al [20] reported −16 mV and −13 mV as the zeta potentials for silver and gold nanoparticles, respectively produced using Pimpinella anisum seeds extract as the reducing and stabilizing agent.…”

Section: Introductionmentioning

confidence: 99%

“…Beside the aforementioned advantages, metals nanoparticles produced using plant extracts as the reducing and stabilizing agents are found to be very stable and safe for packaging and human therapeutic applications [20,[22][23][24]. For instance, Zayed et al [20] reported −16 mV and −13 mV as the zeta potentials for silver and gold nanoparticles, respectively produced using Pimpinella anisum seeds extract as the reducing and stabilizing agent. These values are indicative of highly stable nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Silver/Chitosan Nanofluids Using Selected Plant Extracts: Characterization and Antimicrobial Studies against Gram-Positive and Gram-Negative Bacteria

et al. 2020

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Chitosan/silver nanofluids were prepared using Phoenix dactylifera (DPLE) or Rumex vesicarius (HEL) extracts as the reducing agent, characterized using Fourier-transform infrared spectroscopy (FTIR), ultraviolet–visible (UV-vis), X-ray diffraction (XRD), and transmission electron microscope (TEM). The antimicrobial effect of the nanofluids against Gram positive, Bacillus licheniformis, Staphylococcus haemolyticus, Bacillus cereus, and Micrococcus luteus, and Gram-negative Pseudomonas aeruginosa, Pseudomonas citronellolis, and Escherichia coli bacteria has been studied. The nanoparticles were polydispersed in the chitosan matrix and are highly stable. The zeta potential of the silver nanoparticles in DPLE- and HEL-mediated composites is +46 mV and +56 mV, respectively. The FTIR results reveal that the free carboxylate groups in the plant biomaterial took part in stabilization process. HEL is a stronger reducing agent than DPLE and nanoparticles generated with HEL are smaller (8.0–36 nm) than those produced with DPLE (10–43 nm). DPLE- and HEL-mediated composites effectively inhibit the growth of the studied bacteria but HEL-mediated composite exhibited higher effect. The higher antimicrobial activity of HEL-mediated composite is linked to the smaller nanoparticles. The foregoing results indicate that HEL extract can be used in the green production of potential antimicrobial chitosan/silver nanofluids for biomedical and packaging applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of Silver/Chitosan Nanofluids Using Selected Plant Extracts: Characterization and Antimicrobial Studies against Gram-Positive and Gram-Negative Bacteria

et al. 2020

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“…Pu and colleagues [55] argued that antioxidants possess free radical scavenging properties, hence, they play role in promoting health and preventing diseases. In 2019 alone, several antioxidant activities [56][57][58][59][60][61][62][63] have been carried out on gold nanoparticles through the green route. The results demonstrated encouraging scavenging activities.Leucosidea sericea (Rosaceae family) is the only species belonging to the genus Leucosidea in the Southern part of Africa [64].…”

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confidence: 99%

Green Synthesis of Gold Nanoparticles Capped with Procyanidins from Leucosidea sericea as Potential Antidiabetic and Antioxidant Agents

et al. 2020

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In this study, procyanidins fractions of dimers and trimers (F1-F2) from the Leucosidea sericea total extract (LSTE) were investigated for their chemical constituents. The total extract and the procyanidins were employed in the synthesis of gold nanoparticles (Au NPs) and fully characterized. Au NPs of 6, 24 and 21 nm were obtained using LSTE, F1 and F2 respectively. Zeta potential and in vitro stability studies confirmed the stability of the particles. The enzymatic activity of LSTE, F1, F2 and their corresponding Au NPs showed strong inhibitory alpha-amylase activity where F1 Au NPs demonstrated the highest with IC 50 of 1.88 µg/mL. On the other hand, F2 Au NPs displayed the strongest alpha-glucosidase activity at 4.5 µg/mL. F2 and F2 Au NPs also demonstrated the highest antioxidant activity, 1834.0 ± 4.7 µM AAE/g and 1521.9 ± 3.0 µM TE/g respectively. The study revealed not only the ability of procyanidins dimers (F1 and F2) in forming biostable and bioactive Au NPs but also, a significant enhancement of the natural products activities, which could improve the smart delivery in future biomedical applications.Biomolecules 2020, 10, 452 2 of 24 applying nanoparticles through the green route is their biocompatibility [5]. Many green synthesized nanoparticles have demonstrated interesting biological activities [5,10] including antimicrobial and antidiabetic properties.Diabetes mellitus has undoubtedly become a serious health challenge. More worrisome is type II diabetes mellitus (T2DM), which accounts for 90% of diabetes mellitus. It occurs as a result of the inefficient processing of insulin [11]. As of 2017, the population of adults between the ages of 20 and 79 that suffered from diabetes was 425 million [12]. This is equivalent to 9.9% of the world's population [12]. By estimation, this disease would have drastically increased by 48% in 28 years if not properly managed [13]. Although drugs like miglitol, vigliobose as well as acarbose are available in the market, they are costly and their continuous use is associated with side effects like diarrhea, dropsy, heart failure, damage to the liver, weight gain, abdominal pain, hyperglycemia, and flatulence, necessitating the need for more potent and newer remedies [14][15][16].It is well established that bioactive compounds in various plants possess significant effects in delaying and management of T2DM [17]. Extracts from different plants have been reported as alpha-glucosidase and alpha-amylase inhibitors [18][19][20][21][22][23][24][25][26][27]. Additionally, biologically synthesized Au NPs using plant extracts showed interesting antidiabetic activity. The extracts of Chamalcostus cuspidatus [28], Gymnema sylvestre [29], Cassia fistula stem bark [30], Hericium erinaceus [31], Turbinaria conoides [32], Sambucus nigra [33] and Sargassum swartzi [34] displayed antidiabetic activities in various investigations. Silver/gold NPs of Ocimum basilicum [35] and cinnamon extract [36] also lowers glucose levels. The use of single molecules as reducing/stabilizing agents for ...

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“…7 Recently, the spectrophotometric methods based on the formation of metal nanoparticles have been proposed to evaluate the TAC of a wide variety of food samples. [8][9][10] Among these metal nanoparticles, gold nanoparticles (AuNPs) and silver nanoparticles (AgNPs) have received special attention due to their intrinsic characteristics such as ease of preparation, biocompatibility, stability and high extinction coefficients. [11][12][13] In pioneering studies, it was demonstrated that a series of phenolic acids [14][15][16] and avonoids 15 could act as active reductants for the catalytic growth of AuNPs and AgNPs, and the optical properties of the AuNPs/AgNPs generated were found to be well correlated with their antioxidant power with good linearity, precision, accuracy and sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Interaction effects on a gold nanoparticle-based colorimetric assay for antioxidant capacity evaluation of polyphenols

et al. 2020

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In-vitro antioxidant and antimicrobial activities of metal nanoparticles biosynthesized using optimized Pimpinella anisum extract

Cited by 73 publications

References 40 publications

Preparation of Silver/Chitosan Nanofluids Using Selected Plant Extracts: Characterization and Antimicrobial Studies against Gram-Positive and Gram-Negative Bacteria

Preparation of Silver/Chitosan Nanofluids Using Selected Plant Extracts: Characterization and Antimicrobial Studies against Gram-Positive and Gram-Negative Bacteria

Green Synthesis of Gold Nanoparticles Capped with Procyanidins from Leucosidea sericea as Potential Antidiabetic and Antioxidant Agents

Interaction effects on a gold nanoparticle-based colorimetric assay for antioxidant capacity evaluation of polyphenols

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