Antibacterial, Cytotoxic, and Catalytic Potential of Aqueous Amaranthus tricolor-Mediated Green Gold Nanoparticles

Punnoose Mamatha Susan; Joseph Siby; John Bony K.Chacko Anu RoseMathew SnehaMathew Beena

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Antibacterial, Cytotoxic, and Catalytic Potential of Aqueous Amaranthus tricolor-Mediated Green Gold Nanoparticles

机译：Antibacterial, Cytotoxic, and Catalytic Potential of Aqueous Amaranthus tricolor-Mediated Green Gold Nanoparticles

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This article reports an unexploited method for the green synthesis of gold nanoparticles using Amaranthus tricolor leaves, with the aid of microwave assistance. The fresh leaf extract of the plant plays dual role in reducing and capping actions. The incorporation of microwave energy to this green approach overcomes the characteristic limitation of time consumption by the conventional green techniques. The synthesized gold nanoparticles are characterized using UV-vis., FT-IR, XRD, HRTEM, EDX, DLS, and zeta potential analyses. The various functional groups in the plant extract which are responsible for the reduction and stabilization of nanoparticles were identified by FT-IR spectrum. The crystallographic peaks designated to face centered cubic lattice of the gold nanoparticles are evident from the XRD analysis. HR-TEM images illustrate the almost spherical morphology attained by the formed nanoparticles with an average particle diameter of 18.33 nm. The stability of nanoparticles is revealed by its zeta potential of - 21.3 mV. The DLS analysis results in a hydrodynamic diameter of 148.5 nm. The catalytic potential of the synthesized gold nanoparticles in the attenuation of harmful pollutants such as eosin Y and 2-nitrophenol by NaBH4 was studied. Both the catalytic degradations were successfully completed within few minutes of the reaction and they hold to pseudo-first order kinetics. The nanoparticles accomplished good antibacterial properties towards various bacteria and are demonstrated herein. Cytotoxic activity of the synthesized nanoparticles was evaluated for human lung cancer cell line A549 using MTT assay and a LC50 value of 102.39 +/- 0.36 mu g/mL was obtained.

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来源
《Plasmonics》 |2022年第4期|1387-1402|共16页
作者
Punnoose Mamatha Susan; Joseph Siby; John Bony K.Chacko Anu RoseMathew SnehaMathew Beena;
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作者单位

Mahatma Gandhi Univ;

St Georges Coll;

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正文语种英语
中图分类物理学;
关键词
Green synthesis; Gold nanoparticles; Amaranthus tricolor; Catalytic degradation; 2-nitrophenol; Eosin Y; ECO-FRIENDLY SYNTHESIS; SILVER NANOPARTICLES; ORGANIC-DYES; REDUCTION; DEGRADATION; FACILE; ANTIOXIDANT; PAPER;

Antibacterial, Cytotoxic, and Catalytic Potential of Aqueous Amaranthus tricolor-Mediated Green Gold Nanoparticles

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