The Effect of Culture Age and Initial Silver Concentration on Biosynthesis of Ag Nanoparticles

Kaduková, Jana; Velgosová, Oksana; Mražíková, Anna; Marcinčáková, R.

doi:10.2478/nbec-2014-0004

Cited by 14 publications

(6 citation statements)

References 27 publications

(28 reference statements)

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“…In another experiment performed by Kadukova et al, researchers tried to evaluate the influence of two distinct parameters on the synthesis of silver nanoparticles by Parachlorella kessleri —initial silver concentration and culture age [ 97 ]. In this, AgNPs were produced by inoculating the algae in an aqueous solution of 0.5 mM AgNO 3 .…”

Section: Different Methods Of Algal Nanoparticle Synthesismentioning

confidence: 99%

Green synthesis of silver nanoparticles with algae and the importance of capping agents in the process

Chugh¹,

Viswamalya²,

Das³

2021

Journal of Genetic Engineering and Biotechnology

114

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Background Nanoparticle synthesis is a very interesting area of research currently due to the wide applications of nanoparticles. The nanoparticles have a diameter ranging between 1 and 100 nm and they are used in different fields like electronics, pharmaceuticals, cosmetics, biotechnology, medicines, etc. Main body of the abstract Nanoparticles have gained the interest of researchers due to their large surface-to-volume ratio and their capability to interact effectively with other particles. Several different methods can be used for the production of silver nanoparticles (AgNPs) including chemical, physical, and biological. Out of all the methods, the biological method is considered the cleanest and safest as no toxic chemicals are used in the process. The biological method includes the use of bacteria, fungi, algae, and plant extract for the synthesis. Algal synthesis of AgNPs is especially interesting because of the high capacity of the algae to take in metals and reduce metal ions. Algae is a widely distributed organism and its availability is abundant; an added advantage is their growth under laboratory conditions. These organisms can help in large-scale production at a low cost. Short conclusion This review article explains the different factors that should be considered for the effective synthesis of AgNPs using algae. Capping agents also affect the stability of nanoparticles. It also sheds light on the importance of capping agents in the synthesis of AgNPs. Alga-mediated synthesis of AgNPs along with the use of different capping agents can help in modulating the stability and size of the nanoparticles, thereby improving its cost-effectiveness and environment-friendly production. Graphical abstract

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Section: Different Methods Of Algal Nanoparticle Synthesismentioning

confidence: 99%

Green synthesis of silver nanoparticles with algae and the importance of capping agents in the process

Chugh¹,

Viswamalya²,

Das³

2021

Journal of Genetic Engineering and Biotechnology

114

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“…Synthesis of nanoparticles by microorganisms (bacteria, yeast, fungi and microalgae) can constitute a green and environmentally friendly method for nanoparticles production [ 168 , 169 ]. Formation of nanoparticles: Au, Ag or Pd ( Table 4 ) from metal ions solutions takes place inside microalgae cells (intracellularly) or in the media (extracellularly) via interactions with molecules of microalgal cell metabolism (NADH, pigments, peptides, proteins and polysaccharides) [ 170 , 171 , 172 , 173 , 174 , 175 , 176 ]. The size of synthetized nanoparticles depends on microalgal strain and metal type used, but place of synthesis, initial metal loading, light and temperature are also crucial factors influencing formation of nanoparticles.…”

Section: Metal Stress As a Methods For Stimulation Of Bioproduct Symentioning

confidence: 99%

Effect of Metals, Metalloids and Metallic Nanoparticles on Microalgae Growth and Industrial Product Biosynthesis: A Review

Miazek

Iwanek

Remacle

et al. 2015

IJMS

190

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Microalgae are a source of numerous compounds that can be used in many branches of industry. Synthesis of such compounds in microalgal cells can be amplified under stress conditions. Exposure to various metals can be one of methods applied to induce cell stress and synthesis of target products in microalgae cultures. In this review, the potential of producing diverse biocompounds (pigments, lipids, exopolymers, peptides, phytohormones, arsenoorganics, nanoparticles) from microalgae cultures upon exposure to various metals, is evaluated. Additionally, different methods to alter microalgae response towards metals and metal stress are described. Finally, possibilities to sustain high growth rates and productivity of microalgal cultures in the presence of metals are discussed.

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“…In addition, Algae Parachlorella kessleri (syn. Chlorella kessleri) was used to investigate the effect of culture age [19] and long-term stability of green Ag NPs [20]. At last the bacteria coral (Favites sp) was also used to synthesize Ag NPs for combating against urinary tract infections [21].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical properties of biogenic silver nanoparticles synthesized using Hagenia abyssinica (Brace) JF. Gmel. medicinal plant leaf extract

Murthy¹,

Desalegn²,

Ravikumar³

et al. 2020

Mater. Res. Express

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The biogenic/green silver nanoparticles (g-Ag NPs) were synthesised by using the extract of indigenous medicinal plant of Ethiopia, Hagenia abyssinica (Brace) JF. Gmel. leaf extract for the first time, to investigate the synergistic effect of biomolecules towards the enhancement of electrochemical properties of NPs. The synthesized g-Ag NPs were characterized by UV-visible, UV-DRS, FT-IR, XRD, SEM, EDXA, TEM, HRTEM and SAED techniques. The maximum absorbance, λ max was found to be 461 nm for g-Ag NPs due to surface plasmon resonance. The energy gap, E g of NPs, was found to be 2.31 eV. FTIR spectrum confirmed the presence of bioactive compounds responsible for possible capping and stabilisation of g-Ag NPs. The XRD analysis revealed that the g-Ag NPs are highly crystalline exhibiting sharp peaks for (111), (200), (220) and (311) planes in the diffraction pattern. SEM and TEM micrographs showed differently shaped Ag particles in addition to spherical shape. The average particle size of NPs was found to be 24.08 nm using imageJ analysis. EDX analysis confirmed the presence of Ag in the g-Ag NPs. In addition, the SAED pattern of g-Ag NPs presented concentric patterns for 4 major planes of crystalline silver. The d-spacing values of 0.2428 nm, 0.2126 nm, 0.1483 nm and 0.1263 nm corresponds to d 111 Ag, d 200 Ag, d 220 Ag and d 311 Ag lattice fringes respectively. The cyclic voltammetry (CV) results suggest that g-Ag NPs possess better electrochemical properties due to its lower charge transfer resistance value of 17 Ω. EIS studies too revealed better stability of g-Ag NPs as electrode materials.

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The Effect of Culture Age and Initial Silver Concentration on Biosynthesis of Ag Nanoparticles

Cited by 14 publications

References 27 publications

Green synthesis of silver nanoparticles with algae and the importance of capping agents in the process

Green synthesis of silver nanoparticles with algae and the importance of capping agents in the process

Effect of Metals, Metalloids and Metallic Nanoparticles on Microalgae Growth and Industrial Product Biosynthesis: A Review

Electrochemical properties of biogenic silver nanoparticles synthesized using Hagenia abyssinica (Brace) JF. Gmel. medicinal plant leaf extract

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