Biofabrication of Fe nanoparticles in aqueous extract of Hibiscus sabdariffa with enhanced photocatalytic activities

Alshehri, Abdulmohsen Ali; Malik, Maqsood Ahmad; Khan, Zaheer; Al-Thabaiti, Shaeel A.; Hasan, Nazim

doi:10.1039/c7ra01251a

Cited by 101 publications

(28 citation statements)

References 56 publications

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“…The photocatalytic decolorization efficiency of AC-AgNPs for MB was calculated in terms of dye degradation (%) following the equation of Alshehri et al with slight modication. 19 Dye degradation (%) ¼…”

Section: Photocatalytic Activity Of Ac-agnpsmentioning

confidence: 99%

“…The regression coefficient (R 2 ¼ 0.99) conrmed that the photocatalytic degradation of MB followed the Langmuir-Hinshelwood kinetic model. 19 The electrons are excited during sunlight when the photons hit the surface of NPs present in the colloidal mixture. The dissolved molecules of oxygen in the solution accept the excited electrons from the surface of NPs and converted into oxygen anion radicals.…”

Section: Photocatalytic Activity Of Ac-agnpsmentioning

confidence: 99%

“…Catalytic degradation under visible-light irradiation has gained widespread attention because it is rapid, highly efficient and economical, and does not cause secondary pollution. 19 Ageratum conyzoides L. (family: Asteraceae) in an invasive weed of Indo-Gangetic plains and Narmada basin, and abundantly found in and around Indian agro-ecosystems. The plant has morphological variations and highly adaptable to different ecological conditions.…”

Section: Introductionmentioning

confidence: 99%

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DNA-binding, antioxidant, H₂O₂ sensing and photocatalytic properties of biogenic silver nanoparticles using Ageratum conyzoides L. leaf extract

2019

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Green nanotechnology is gaining widespread interest owing to the elimination of harmful reagents and offers a cost-effective synthesis of expected products. In the present study, silver nanoparticles (AgNPs) were synthesized from Ageratum conyzoides leaf extract (ACLE). UV-visible spectrophotometry showing a characteristic SPR peak at 443 nm verified the phytosynthesis of AC-AgNPs. The FTIR spectrum was examined to identify the efficient functional molecules responsible for the reduction of Ag + to metallic silver (Ag 0 ). SEM, TEM and XRD illustrated the formation of crystalline and spherical NPs with a size range of 14-48 nm. EDX data showed the presence of elemental silver with an energy peak at 3 eV. CT-DNA interaction with AC-AgNPs was investigated and the UV absorption spectra revealed a bathochromic effect indicating groove binding. AC-AgNPs showed a strong antioxidant property in a concentrationdependent manner when analyzed by DPPH and ABTS radical scavenging assay. AC-AgNPs were investigated as a SPR-based H 2 O 2 sensor, which can provide promising opportunities in medical and environmental fields to detect reactive oxygen species such as H 2 O 2 . The catalytic effectiveness of phytosynthesized NPs was also examined within 2 h of exposure for methylene blue degradation under sunlight. There is thus a reasonable potential application of green synthesized AC-AgNPs for the degradation of hazardous synthetic dyes.

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Section: Photocatalytic Activity Of Ac-agnpsmentioning

confidence: 99%

Section: Photocatalytic Activity Of Ac-agnpsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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DNA-binding, antioxidant, H₂O₂ sensing and photocatalytic properties of biogenic silver nanoparticles using Ageratum conyzoides L. leaf extract

2019

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“…Second step between 193.12°C-383.26°C may due to combustion of organic consituents, elimination of carbon groups. Last weight loss was because of the crystal structure of FeNP A [30,38,39]. The XRD pattern of FeNP A were shown in Figure 7.…”

Section: Resultsmentioning

confidence: 99%

Structural characterization, antioxidant and cytotoxic effects of iron nanoparticles synthesized using Asphodelus aestivus Brot. aqueous extract

Tüzün

Fafal

Taştan

et al. 2020

Green Processing and Synthesis

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AbstractASP was used to synthesize FeNPA. They were characterized by UV-vis spectroscopy, FT-IR, TEM, SEM, XRD and ZP. The aim of this study was to evaluate in vitro cytotoxic activity and antioxidant acitivities of FeNPA and ASP. The antioxidant properties were evaluated using DPPH, ABTS+ and H2O2 assays. FeNPA had higher antioxidant activity comparing to ASP according to DPPH (IC50: 3.48 μg/mL) and ABTS+ (60.52%) assays. Anti-cancer activities of FeNPA and ASP were investigated in breast cancer, melanoma and control cell lines. FeNPA was more cytotoxic than ASP in MCF-7, MeWo, CHL-1, and HEL 299 cells. FeNPA had shown that mitochondria induce apoptosis through stress in MDA-MB-231, and cells MeWo. ASP also induced apoptosis 2.23-fold in MCF-7 cells. Progesterone receptor gene expression showed a 10-fold increase in a hormone-dependent MCF-7 cell line in ASP, and FeNPA treatment. Expressions of BCL6, CXCL12, DNAJC15, RB1 and TPM1 in melanoma cancer cell lines were significantly increased in ASP and FeNPA administration. It had been shown that FeNPA regulates gene expressions that may be considered important in terms of prognosis in breast cancer and melanoma cell lines and it is suggested that gene expressions regulated by FeNPA are also evaluated in animal models in vivo.

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“…Hibiscus sabdariffa is a strongly basic dye with a large number of medicinal applications and is used for various diagnostic purposes. The iron (Fe) nanoparticles synthesized from flower extract of Hibiscus sabdariffa Linn showed a higher photocatalytic degradation activity 17 . Hibiscus Sabdariffa's flower extract acts as an effective chelating agent in the synthesis of CeO 2 nanoparticles 18 .…”

Section: Introductionmentioning

confidence: 99%

Antineoplastic Properties of Phyto-synthesized Silver Nanoparticles from Hibiscus Sabdariffa Linn. Bark Extract

Islam,

Yesmin,

Ali

et al. 2018

Cent. Asian j. Med. Sci.

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Objectives:In recent years, green synthesis of silver nanoparticles (AgNPs) has gained much interest from researchers as biomedical treatments. The purpose of this study was to determine if AgNPs synthesized from Hibiscus Sabdariffa L. bark extract are an effective stabilizing agent and inhibit Ehrlich ascites carcinoma (EAC) cell growth. Methods: AgNPs were prepared by the reaction of 0.6mM silver nitrate and 5% bark extract. Synthesis of AgNPs were confirmed by UV-visible spectroscopy as well as characterized by scanning electron microscopy, x-ray diffraction, and fourier transform infrared spectroscopy. AgNPs was applied on 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) experiments to determine its antioxidant activity as well as its cytotoxic effect against EAC cells. In vivo, the antineoplastic effect of AgNPs was tested against EAC cells. Results: The synthesized AgNPs have a surface plasmon resonance band centered at 475 nm. Fourier transform infrared spectroscopy (FTIR) spectra showed major peaks of phytochemicals and proteins involved in AgNPs biosynthesis by identifying different functional groups involved in effective capping of AgNPs. The scanning electron microscope (SEM) analysis of AgNPs showed spherical nanoparticles with mean size 90.82 nm. The DPPH and ABTS assays revealed the antioxidant activity of AgNPs with IC 50 31.74±2.06 and 15.45±2.72 μg/ml that was comparable to catechin. The synthesized AgNPs exhibited effective cytotoxic activity against EAC cells and the inhibitory concentration (IC 50 ) was recorded at 32.00 µg/ml. AgNPs showed effective cell growth inhibition, increased life span, reduced tumor weight, restored all hematological characteristics to normal level and also induced apoptosis of EAC cells. Conclusion: This study proves that the phyto-synthesized AgNPs show effective anticancer properties against EAC cells.

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Biofabrication of Fe nanoparticles in aqueous extract of Hibiscus sabdariffa with enhanced photocatalytic activities

Cited by 101 publications

References 56 publications

DNA-binding, antioxidant, H₂O₂ sensing and photocatalytic properties of biogenic silver nanoparticles using Ageratum conyzoides L. leaf extract

DNA-binding, antioxidant, H₂O₂ sensing and photocatalytic properties of biogenic silver nanoparticles using Ageratum conyzoides L. leaf extract

Structural characterization, antioxidant and cytotoxic effects of iron nanoparticles synthesized using Asphodelus aestivus Brot. aqueous extract

Antineoplastic Properties of Phyto-synthesized Silver Nanoparticles from Hibiscus Sabdariffa Linn. Bark Extract

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Biofabrication of Fe nanoparticles in aqueous extract of Hibiscus sabdariffa with enhanced photocatalytic activities

Cited by 101 publications

References 56 publications

DNA-binding, antioxidant, H2O2 sensing and photocatalytic properties of biogenic silver nanoparticles using Ageratum conyzoides L. leaf extract

DNA-binding, antioxidant, H2O2 sensing and photocatalytic properties of biogenic silver nanoparticles using Ageratum conyzoides L. leaf extract

Structural characterization, antioxidant and cytotoxic effects of iron nanoparticles synthesized using Asphodelus aestivus Brot. aqueous extract

Antineoplastic Properties of Phyto-synthesized Silver Nanoparticles from Hibiscus Sabdariffa Linn. Bark Extract

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DNA-binding, antioxidant, H₂O₂ sensing and photocatalytic properties of biogenic silver nanoparticles using Ageratum conyzoides L. leaf extract

DNA-binding, antioxidant, H₂O₂ sensing and photocatalytic properties of biogenic silver nanoparticles using Ageratum conyzoides L. leaf extract