Antioxidant Assay of Gold and Silver Nanoparticles from Edible Basidiomycetes Mushroom Fungi

R, Madhanraj; Eyini, M.; Paulraj, Balaji

doi:10.5530/fra.2017.2.20

Cited by 39 publications

(21 citation statements)

References 12 publications

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“…GA-AuNPs slightly lowered the inhibition when compared with standard ascorbic acid. The resent research revealed that biosynthesized GA-AuNPs resulted in highest ferric reducing capacity [43]. Interestingly in our study, the green synthesized GA-AuNPs from GA-AE showed increased FRAP activity.…”

Section: Frap Assaymentioning

confidence: 46%

Facile green synthesis of gold nanoparticles from marine algae Gelidiella acerosa and evaluation of its biological Potential

Senthilkumar¹,

Surendran²,

Sudhagar³

et al. 2019

SN Appl. Sci.

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In this present research, the Gold nanoparticles (GA-AuNPs) produced from Gelidiella acerosa, marine algae using green synthesis method was evaluated for its antidiabetic, antibacterial and antioxidant activity. Well-developed GA-AuNPs were effectively characterized using advanced analytical instruments like HRTEM, UV-visible, SEM and XRD. This analysis exposed GA-AuNPs to be present with spherical, hexagonal structure and crystalline nature. The average size of GA-AuNPs particles was estimated to lie between 5.81 nm to 117.59 nm by using Debye-Scherer equation. The enzyme inhibitory property of (IC 50 ) of G. acerosa aqueous extract and synthesized gold nanoparticles from G. acerosa against α amylase and α-glucosidase enzyme was found to be 2.1 ± 0.01, 3.7 ± 0.01 µg/mL and 2.8 ± 0.02, 4.1 ± 0.01, respectively. Further antioxidant assessment of GA-AuNPs were examined using DPPH and FRAP assays, the results exhibited that the strong antioxidant activity were observed in all the concentrations when compared with standard. Finally antibacterial activity was evaluated the GA-AuNPs against gram positive and gram negative bacteria, the strong antibacterial activity was observed in both the bacterial strains when compared with standard antibiotic. The GA-AuNPs from marine algae was exhibited to be strong inhibitory activity against alpha amylase and alpha glucosidase enzyme, antioxidant activity and antibacterial activity, these GA-AuNPs are projected to have potential biological applications.

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Section: Frap Assaymentioning

confidence: 46%

Facile green synthesis of gold nanoparticles from marine algae Gelidiella acerosa and evaluation of its biological Potential

Senthilkumar¹,

Surendran²,

Sudhagar³

et al. 2019

SN Appl. Sci.

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“…It was observed that with increase in days of preservation ABTS + , DPPH, SO and NO scavenging activity increases in leaves preserved in NS and SN solution, on contradictory in distilled water set their activity decreases. Biogenic silver nanoparticles were reported to show high activity towards scavenging free radicals 51,52 and chelating metal ions 53 . It seems that the scavenging potential of NS, as well as SN protects leaf tissue from the intracellular harmful effect of free radicals.…”

Section: Discussionmentioning

confidence: 99%

Use of biogenic silver nanoparticles in enhancing shelf life of Morus alba L. at post harvest stage

Das

Mandal

2020

Sci Rep

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Morus alba is one of the most important cultivated crop in indian sub-continent contributing towards production of silk fibre that carries economic importance worldwide. Post harvest preservation of M. alba leaves is a challenging factor as decrease in concentration of essential metabolites that needed for silk gland development takes place. Decrease in chlorophyll, protein, sugar concentration and increase in accumulation of free radicals and RoS takes place at post harvest stage of preservation, putting negative impact on larval development indicated by high mortality rate. Silver nitrate and nanosilver solution acts as an effective preservative, enhances the activity of enzymatic and nonenzymatic antioxidants thereby reducing the harmful effect of accumulated free radicals and ROS. The effectiveness of nanosilver solution was found to be on the upper site without any significant difference than silver nitrate, as higher retention of primary metabolites like pigments, proteins, and sugar takes place. the impact of feeding nanosilver preserved leaves on silkworm was found on the positive trend as larval growth rate, cocoon weight, shell weight, effective rate of rearing was observed almost same to the larvae fed with fresh leaves.

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“…Consumption of antioxidants as dietary supplements has helped people to fight against disorders like cancer, cardiovascular diseases and aging (Watters et al, 2007;Bjelakovic et al, 2014). AuNPs synthesized by chemical, physical, and biological routes possess antioxidant activity (Yakimovich et al, 2008;Medhe et al, 2014;Madhanraj et al, 2017). There are very few reports on antioxidant properties of AuNPs synthesized by microorganisms (Ahmad et al, 2003;Veeraapandian et al, 2012;Manivasagan et al, 2015;Markus et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of AuNPs by Acinetobacter sp. GWRVA25: Optimization, Characterization, and Its Antioxidant Activity

Nadhe

Wadhwani

Singh³

et al. 2020

Front. Chem.

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Bacteriogenic synthesis of metal nanoparticles is ecofriendly and greatly influenced by physico-chemical reaction parameters with respect to shape and size. Thus, present work aimed to synthesize and optimization of bacteriogenic gold nanoparticles (AuNPs) and study their antioxidant activity. Acinetobacter sp. cells were able to synthesize AuNPs, when challenged with tetra-chloroauric acid (HAuCl 4). By physicochemical optimization, maximum synthesis was obtained with 72 h old culture using 2.1 × 10 9 CFU/ml cell density. Whereas, pH-7 is suitable for AuNPs synthesis. HAuCl 4 concentration (0.5 mM) enhanced the formation of monodispersed and spherical nanoparticles (15 ± 10 nm). At 37 • C temperature, Acinetobacter sp. released nanoparticles in supernatant. From characterization, AuNPs were found to be crystalline in nature with negative surface charge. AuNPs showed up to 86% different radical scavenging ability, exhibiting antioxidant activity. In conclusion, spherical AuNPs can be synthesized using Acinetobacter sp. through physicochemical optimization. This is the first report of antioxidant activity exhibited by monodispersed bacteriogenic AuNPs synthesized using Acinetobacter sp.

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Antioxidant Assay of Gold and Silver Nanoparticles from Edible Basidiomycetes Mushroom Fungi

Cited by 39 publications

References 12 publications

Facile green synthesis of gold nanoparticles from marine algae Gelidiella acerosa and evaluation of its biological Potential

Facile green synthesis of gold nanoparticles from marine algae Gelidiella acerosa and evaluation of its biological Potential

Use of biogenic silver nanoparticles in enhancing shelf life of Morus alba L. at post harvest stage

Green Synthesis of AuNPs by Acinetobacter sp. GWRVA25: Optimization, Characterization, and Its Antioxidant Activity

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