Bio-directed synthesis of Pt-nanoparticles from aqueous extract of red algae Halymenia dilatata and their biomedical applications

Ganesan, S.; Vinosha, Manoharan; Duraisamy, Sangeetha; Manikandakrishnan, Muthushanmugam; Palanisamy, Subramanian; Mohandoss, Sonaimuthu; Manikandan, R.; You, SangGuan; Prabhu, Nagesh

doi:10.1016/j.colsurfa.2021.126434

Cited by 32 publications

(10 citation statements)

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“…The platinum nanoparticle analysis of brown seaweed Padina gymnosporia revealed carbohydrates and proteins participation in the reduction of platinum ions (Pt) to PtNPs [ 67 ]. The red algae Halymenia dilatata aqueous extract contained alkaloids, flavonoids, tannins, terpenoids, steroids, carbohydrates, glycosides, amino acids, and protein, which can be attached by the functional groups to the surface of platinum nanoparticles and contribute to the metal ion’s reduction in the nanoparticle and stabilization by coating the surface [ 68 ].…”

Section: The Proposed Mechanism Of Ptnps Synthesismentioning

confidence: 99%

“…Thus, an inhibitory effect is shown for gram-negative bacteria Pseudomonas aeruginosa [ 50 ], S. typhimurium [ 100 ], Klebsiella oxytoca and Klebsiella aerogenes [ 101 ], S. typhi [ 116 ], Ps. aeruginosa [ 118 ], Enterobacter aerogenes , S. enteritidis [ 120 ], Klebsiella pneumoniae [ 84 , 121 ], B. licheniformis [ 122 ], E. coli [ 77 , 123 ], Aeromonas hydrophila [ 63 , 124 ], Proteus vulgaris [ 121 ], Enterobacter cloacae [ 121 ]; Gram-positive bacterium— Staphylococcus aureus [ 50 ], Listeria innocua [ 50 ], Streptococcus pneumonia [ 68 ], Lactococcus lactis , Bacillus subtilis [ 89 ], St. epidermis [ 101 ], St. haemolyticus [ 125 ], Enterococcus faecium [ 3 , 125 ], St. pyogens and Vibrio cholerae [ 126 ].…”

Section: Application Of Green Ptnpsmentioning

confidence: 99%

“…The antioxidant activity is reflected as a percentage in the DPF absorption or removal [ 159 , 160 ]. It was shown that antioxidant activity was found to be dose-dependent for PtNPs and may also correlate with the nanoparticle size and the zeta potential, depending on the used “bio-factory” [ 50 , 66 , 68 , 96 , 123 ]. For example, the smallest nanoparticles produced by gram-negative bacteria showed better antioxidant activity than gram-positive ones [ 50 ].…”

Section: Application Of Green Ptnpsmentioning

confidence: 99%

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Green Synthesis of Platinum Nanoparticles for Biomedical Applications

Михайлова¹

2022

JFB

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The diverse biological properties of platinum nanoparticles (PtNPs) make them ideal for use in the development of new tools in therapy, diagnostics, and other biomedical purposes. “Green” PtNPs synthesis is of great interest as it is eco-friendly, less energy-consuming and minimizes the amount of toxic by-products. This review is devoted to the biosynthesis properties of platinum nanoparticles based on living organisms (bacteria, fungi, algae, and plants) use. The participation of various biological compounds in PtNPs synthesis is highlighted. The biological activities of “green” platinum nanoparticles (antimicrobial, anticancer, antioxidant, etc.), the proposed mechanisms of influence on target cells and the potential for their further biomedical application are discussed.

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Section: The Proposed Mechanism Of Ptnps Synthesismentioning

confidence: 99%

Section: Application Of Green Ptnpsmentioning

confidence: 99%

Section: Application Of Green Ptnpsmentioning

confidence: 99%

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Green Synthesis of Platinum Nanoparticles for Biomedical Applications

Михайлова¹

2022

JFB

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“…Naturally occurring chemicals called antioxidants safeguard cells and tissues from free radical damage. 34 The human body, in general, has a well-developed antioxidant defense mechanism. However, this system sometimes fails to work efficiently under certain conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the pursuit of new effective remedies is considered a priority. Naturally occurring chemicals called antioxidants safeguard cells and tissues from free radical damage . The human body, in general, has a well-developed antioxidant defense mechanism.…”

Section: Introductionmentioning

confidence: 99%

Catalytic and Medical Potential of a Phyto-Functionalized Reduced Graphene Oxide–Gold Nanocomposite Using Willow-Leaved Knotgrass

et al. 2021

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In the current study, a simple, environmentally friendly, and cost-effective reduced graphene oxide–gold nanoparticle (rGO-AuNP) nanocomposite was successfully phytosynthesized using the aqueous leaf extract of a common weed found on the Nile banks, Persicaria salicifolia , for the first time. The phytosynthesis of rGO-AuNPs was first confirmed via the color transformation from brown to black as well as throughvarious techniques such as transmission electron microscopy (TEM) and Raman spectroscopy. Two UV–vis peaks at 275 and 530 nm were observed for the nanocomposite with a typical particle size of mostly spherical AuNPs of 15–20 nm. However, other shapes were occasionally detected including rods, triangles, and rhomboids. Existing phytoconstituents such as flavonoids and glycosides in the plant extract were suggested to be responsible for the phytosynthesis of rGO-AuNPs. The excellent catalytic efficacy of rGO-AuNPs against MB degradation was confirmed, and a high antibacterial efficiency against Escherichia coli and Klebsiella pneumonia was also confirmed. Promising antioxidant performance of rGO-AuNPs was also proved. Furthermore, it was concluded that rGO-AuNPs acquired higher efficiency than AuNPs synthesized from the same plant extract in all of the studied applications.

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