Seaweed-mediated synthesis of gold nanoparticles using Turbinaria conoides and its characterization

Abstract

The synthesis of metal nanoparticles using algae has been unexplored, but it is a more biocompatible method than the other biological methods. Metal nanoparticle synthesis using algae extract shows rapid and non-toxic process which resulted to nano sizes having the greatest potential for biomedical applications. In this investigation, we studied the green synthesis of gold nanoparticles using the algae extract of Turbinaria conoides. Green synthesis of gold nanoparticles was preliminarily confirmed by color changing from yellow to dark pink in the reaction mixture, and the broad surface plasmon resonance band was centered at 520 to 525 nm which indicates polydispersed nanoparticles. Transmission electron microscopy and selected-area electron diffraction analysis show the morphology and crystalline structure of synthesized gold nanoparticles with the size range of 6 to 10 nm. The four strong diffraction peaks were observed by X-ray diffraction; it confirmed the crystalline nature of synthesized gold nanoparticles. The carboxylic, amine, and polyphenolic groups were associated with the algae-assisted synthesized gold nanoparticles which was confirmed using Fourier transform-infrared spectroscopy. This study eliminates the use of chemical substances as reducing and stabilizing agent. Because it has natural several constituents which are fucoidan and polyphenolic substances, it does a dual function as both reducing and stabilizing agent for nanoparticles. Thus, algae-mediated synthesis process of biomedically valuable gold nanoparticles is a one-spot, facile, convenient, large-scaled, and eco-friendly method.

Potentiality of Silver Nanoparticles Prepared by Ulva fasciata as Anti-nephrotoxicity in Albino-Rats

“…Also, the time taken for AgNPs formation very fast (less than 3 min). These result are agree with many investigators (Rajeshkumar et al, 2012 andAbdel-Raouf et al, 2013 ) who reported that the appearance of dark brown color in solution. Also, Johnson et al (2015) reported formation of silver nanoparticles in a few mint, and Bhimba et al (2014) and who suggested the time formation of silver nanoparticles 10 min at 121ºC.…”

Antibacterial, antioxidant and anticancer properties of Turbinaria conoides (J. Agardh) Kuetz

“…It is also possessed other essential components, digestible proteins along with mineral salts (K, Ca, and Fe) and polyunsaturated fatty acids. Apart, it has a wealthy source of dietary fiber content with iodine which is play an immense role in enhancing the food quality and biochemical homeostasis [8]. Hence, the cytotoxicity of T. conoides was reported in ethyl acetate extract due to its oxygenated fucosterols [9,10].…”

Vitis vinifera Assisted Silver Nanoparticles with Antibacterial and Antiproliferative Activity against Ehrlich Ascites Carcinoma Cells

“…The intense peak of 631.87 cm −1 shows the C-Cl group of alkyl halides [21]. After the bioreduction, there is a shift in the absorption band of 3295.…”