Seaweed Sargassum wightii mediated preparation of zirconia (ZrO2) nanoparticles and their antibacterial activity against gram positive and gram negative bacteria

Kumaresan, M.; Anand, K. Vijai; Govindaraju, K.; Selvaraj, Thangavel; Kumar, Virendra

doi:10.1016/j.micpath.2018.08.060

Cited by 116 publications

(32 citation statements)

References 21 publications

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“…Furthermore, we found that S. muticum EO showed a strong activity against M. aeruginosa (32.33 mm). Our results are in agreement with those found by Kumaresan et al (2018) [ 45 ] who investigated the antimicrobial activity of S. wightii ( Sargassum genus) aqueous extract and showed that this extract had an important antibacterial activity against Gram-negative bacteria Escherichia coli with inhibition zone of 13 mm. Sujatha et al (2019) [ 46 ] observed that S. swartzii ethanolic extract exhibited a high antibacterial activity against Gram-negative bacteria.…”

Section: Discussionsupporting

confidence: 93%

Seaweed Essential Oils as a New Source of Bioactive Compounds for Cyanobacteria Growth Control: Innovative Ecological Biocontrol Approach

Zerrifi

Khalloufi

Mugani

et al. 2020

Toxins

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The application of natural compounds extracted from seaweeds is a promising eco-friendly alternative solution for harmful algae control in aquatic ecosystems. In the present study, the anti-cyanobacterial activity of three Moroccan marine macroalgae essential oils (EOs) was tested and evaluated on unicellular Microcystis aeruginosa cyanobacterium. Additionally, the possible anti-cyanobacterial response mechanisms were investigated by analyzing the antioxidant enzyme activities of M. aeruginosa cells. The results of EOs GC–MS analyses revealed a complex chemical composition, allowing the identification of 91 constituents. Palmitic acid, palmitoleic acid, and eicosapentaenoic acid were the most predominant compounds in Cystoseira tamariscifolia, Sargassum muticum, and Ulva lactuca EOs, respectively. The highest anti-cyanobacterial activity was recorded for Cystoseira tamariscifolia EO (ZI = 46.33 mm, MIC = 7.81 μg mL−1, and MBC = 15.62 μg mL−1). The growth, chlorophyll-a and protein content of the tested cyanobacteria were significantly reduced by C. tamariscifolia EO at both used concentrations (inhibition rate >67% during the 6 days test period in liquid media). Furthermore, oxidative stress caused by C. tamariscifolia EO on cyanobacterium cells showed an increase of the activities of superoxide dismutase (SOD) and catalase (CAT), and malondialdehyde (MDA) concentration was significantly elevated after 2 days of exposure. Overall, these experimental findings can open a promising new natural pathway based on the use of seaweed essential oils to the fight against potent toxic harmful cyanobacterial blooms (HCBs).

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Section: Discussionsupporting

confidence: 93%

Seaweed Essential Oils as a New Source of Bioactive Compounds for Cyanobacteria Growth Control: Innovative Ecological Biocontrol Approach

Zerrifi

Khalloufi

Mugani

et al. 2020

Toxins

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“…UV-visible absorption spectra for ZrO 2 , Ag 2 O, and Z-A nanoparticles are presented in Figure 1 with the UV-visible absorption spectra of ZrO 2 and Ag 2 O nanoparticles shown in Figure 1a. A strong and prominent absorption peak at about 300 nm was observed from the UV-visible absorption spectrum of zirconia nanoparticles (shown in Figure 1a) [21]. Ag 2 O nanoparticles show a broad absorption in the UV-visible region (Figure 1a), which is in accordance with previous literature [22].…”

Section: Uv-visible Absorption Analysissupporting

confidence: 90%

Evaluation of Antifungal Activity by Mixed Oxide Metallic Nanocomposite against Candida spp.

2021

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High doses of antimicrobial agents are a huge threat due to the increasing number of pathogenic organisms that are becoming resistant to antimicrobial agents. This resistance has led to a search for alternatives. Therefore, this study presents the synthesis and characterization of ZrO2-Ag2O nanoparticles (NPs) by sol-gel. The NPs were analyzed by dynamic light scattering (DLS), UV-visible (UV-vis), Raman and scanning electron microscopy (SEM). The NPs were later evaluated for their antifungal effects against Candidaalbicans, Candida dubliniensis, Candida glabrata, and Candida tropicalis, using disc diffusion and microdilution methods, followed by the viability study. The DLS showed sizes for ZrO2 76 nm, Ag2O 50 nm, and ZrO2-Ag2O samples between 14 and 42 nm. UV-vis shows an absorption peak at 300 nm for ZrO2 and a broadband for Ag2O NPs. Raman spectra were consistent with factor group analysis predictions. SEM showed spherically shaped NPs. The antifungal activity result suggested that ZrO2-Ag2O NPs were effective against Candida spp. From the viability study, there was no significance difference in viability as a function of time and concentration on human mononuclear cells. This promising result can contribute toward the development of alternative therapies to treat fungal diseases in humans.

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“…In addition, synthesis routes such as coprecipitate method and hydrothermal processes contribute in controlling morphology and size of NPs such as Zinc, Cadmium, Iron etc (Karthik, Revathi, & Tatarchuk, 2018; Tanna, Chaudhary, Juneja, Gandhare, & Rai, 2015). The interaction of microorganisms and metals efficiently contributed in numerous biotechnological processes especially biomedicines, bioleaching, bioremediation, and corrosion by microorganisms (Aqeel et al, 2019; Gudikandula, Vadapally, & Charya, 2017; Kumaresan, Anand, Govindaraju, Tamilselvan, & Kumar, 2018; Manzoor, Rafiq, Ikram, Nafees, & Ali, 2018; Salam et al, 2018; Tahvilian et al, 2019; Zahid et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…. The interaction of microorganisms and metals efficiently contributed in numerous biotechnological processes especially biomedicines, bioleaching, bioremediation, and corrosion by microorganisms (Aqeel et al, 2019;Gudikandula, Vadapally, & Charya, 2017;Kumaresan, Anand, Govindaraju, Tamilselvan, & Kumar, 2018;Salam et al, 2018;Tahvilian et al, 2019;Zahid et al, 2018).…”

mentioning

confidence: 99%

Synthesis and characterization of microbial mediated cadmium oxide nanoparticles

Asghar

Habib

Zaman

et al. 2020

Microscopy Res & Technique

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Microbial mediated synthesis of metallic nanoparticles constitutes as effective and promising approach for the development of antibacterial materials in the field of bioengineering and biomedicine. We prepared Cadmium oxide nanoaprticles (CdO NPs) utilizing Penicillium oxalicum, and cadmium acetate solution via coprecipitate method. The elemental composition and morphology of these synthesized CdO NPs were examined through X-ray diffraction (XRD), UV-Vis absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), and Energy dispersive spectroscopy (EDS). Furthermore, we evaluated the bactericidal potential of prepared CdO NPs using Escherichia coli (E.coli), Staphylococcus aureus (S.aureus), Bacillus cereus (B.cereus), and Pseudomonas aeruginosa (P. aeruginosa). Dimethyl sulfoxide was used as negative control while erythromycin was used as positive control. The XRD spectrum revealed cubic crystalline nanoparticles with 22.94 nm size and UV showed absorbance peak at 297 nm with 2.5 eV band gap energy. FTIR depicted O─H and carboxylic groups along with CdO stretching vibration. EDS showed the presence of organic compounds on Cd and O over NPs surface. SEM results revealed the spherical shape of the CdO NPs. The synthesized NPs exhibited highly potent bactericidal activity against selected strains and demonstrated less optical density of 0.086 after 24 hr. Owing to the significant antibacterial activity of CdO NPs, the broad application prospects of these nanoparticles CdO NPs in extensive biomedical applications is indicated.

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Seaweed Sargassum wightii mediated preparation of zirconia (ZrO2) nanoparticles and their antibacterial activity against gram positive and gram negative bacteria

Cited by 116 publications

References 21 publications

Seaweed Essential Oils as a New Source of Bioactive Compounds for Cyanobacteria Growth Control: Innovative Ecological Biocontrol Approach

Seaweed Essential Oils as a New Source of Bioactive Compounds for Cyanobacteria Growth Control: Innovative Ecological Biocontrol Approach

Evaluation of Antifungal Activity by Mixed Oxide Metallic Nanocomposite against Candida spp.

Synthesis and characterization of microbial mediated cadmium oxide nanoparticles

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