Larch Bark Pectinic Polysaccharide as Ag(0) Nanoparticle Stabilizing Matrix

Ivanova, N.V.; Trofimova, Natalya N.; Бабкин, В. А.

doi:10.1007/s10600-014-0866-3

Cited by 4 publications

(1 citation statement)

References 1 publication

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“…In this regard, hundreds of papers are now surfacing stating that while still using AgNO 3 to obtain AgNP, we can at least avoid the potential toxicity of the BH 4 − reaction products. In such papers, natural, allegedly biocompatible reductants are used, such as proteins, polysaccharides, alkaloids, enzymes, and quinones, typically from plant extracts [6][7][8][9]. In this context, we recently published a synthesis of AgNP with the natural polysaccharide pectin, starting from AgNO 3 [10].…”

Section: Introductionmentioning

confidence: 99%

Increased Antibacterial and Antibiofilm Properties of Silver Nanoparticles Using Silver Fluoride as Precursor

et al. 2020

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Silver nanoparticles were produced with AgF as the starting Ag(I) salt, with pectin as the reductant and protecting agent. While the obtained nanoparticles (pAgNP-F) have the same dimensional and physicochemical properties as those already described by us and obtained from AgNO3 and pectin (pAgNP-N), the silver nanoparticles from AgF display an increased antibacterial activity against E. coli PHL628 and Staphylococcus epidermidis RP62A (S. epidermidis RP62A), both as planktonic strains and as their biofilms with respect to pAgNP-N. In particular, a comparison of the antimicrobial and antibiofilm action of pAgNP-F has been carried out with pAgNP-N, pAgNP-N and added NaF, pure AgNO3, pure AgF, AgNO3 and added NaF and pure NaNO3 and NaF salts. By also measuring the concentration of the Ag+ cation released by pAgNP-F and pAgNP-N, we were able to unravel the separate contributions of each potential antibacterial agent, observing an evident synergy between p-AgNP and the F− anion: the F− anion increases the antibacterial power of the p-AgNP solutions even when F− is just 10 µM, a concentration at which F− alone (i.e., as its Na+ salt) is completely ineffective.

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Section: Introductionmentioning

confidence: 99%

Increased Antibacterial and Antibiofilm Properties of Silver Nanoparticles Using Silver Fluoride as Precursor

et al. 2020

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Biosynthesis of silver nanoparticle composites based on hesperidin and pectin and their synergistic antibacterial mechanism

Zhao

Xie

et al. 2022

International Journal of Biological Macromolecules

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Silver nanoparticles synthesized and coated with pectin: An ideal compromise for anti-bacterial and anti-biofilm action combined with wound-healing properties

Pallavicini

Arciola

Bertoglio

et al. 2017

Journal of Colloid and Interface Science

119

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The synthesis of Ag nanoparticles from Ag has been investigated, with pectin acting both as reductant and coating.∼100% Ag to Ag(0) one-pot conversion was obtained, yielding p-AgNP, i.e. an aqueous solution of pectin-coated spherical Ag nanoparticles (d=8.0±2.6nm), with a<1ppm concentration of free Ag cation. Despite the low free Ag concentration and low Ag release with time, the nature of the coating allows p-AgNP to exert excellent antibacterial and antibiofilm actions, comparable to those of ionic silver, tested on E. coli (Gram-) and S. epidermidis (Gram+) both on planctonic cells and on pre- and post-biofilm formation conditions. Moreover, p-AgNP were tested on fibroblasts: not only p-AgNP were found to be cytocompatible but also revealed capable of promoting fibroblasts proliferation and to be effective for wound healing on model cultures. The antibacterial activity and the wound healing ability of silver nanoparticles are two apparently irreconcilable properties, as the former usually requires a high sustained Ag release while the latter requires low Ag concentration. p-AgNP represents an excellent compromise between opposite requirements, candidating as an efficient medication for repairing wounds and/or to treat vulnerable surgical site tissues, including the pre-treatment of implants as an effective prophylaxis in implant surgery.

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Larch Bark Pectinic Polysaccharide as Ag(0) Nanoparticle Stabilizing Matrix

Cited by 4 publications

References 1 publication

Increased Antibacterial and Antibiofilm Properties of Silver Nanoparticles Using Silver Fluoride as Precursor

Increased Antibacterial and Antibiofilm Properties of Silver Nanoparticles Using Silver Fluoride as Precursor

Biosynthesis of silver nanoparticle composites based on hesperidin and pectin and their synergistic antibacterial mechanism

Silver nanoparticles synthesized and coated with pectin: An ideal compromise for anti-bacterial and anti-biofilm action combined with wound-healing properties

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