Green Synthesis of Silver Nanoparticles Using Nymphae odorata Extract Incorporated Films and Antimicrobial Activity

Gudimalla, Apparao; Jose, Jiya; Rajendran, Jose Varghese; Thomas, Sabu

doi:10.1007/s10924-020-01959-6

Cited by 41 publications

(17 citation statements)

References 60 publications

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“…The WCA of the first layer (FUR) was 86.34, indicating that the surface was hydrophobic. The addition of AgNPs increased the hydrophobicity of nanocomposite films, which was related to the hydrophobic metallic nature of the silver AgNPs [33]. Moreover, the addition of AgNPs to the furcellaran layer influenced the second layer of nanocomposites (CHIT+HGEL), reducing the WCA value.…”

Section: Physical Properties Of Tested Filmsmentioning

confidence: 99%

“…Kumar et al [21], who produced corn starch and silver nanoparticles+guava leaves extract, reached similar conclusions. Moreover, AgNPs, due to their smaller size, penetrate bacterial cells more easily [33]. It is also believed that the antimicrobial activity of AgNPs depends on the surface area of the nanoparticles, which are likely to act as reservoirs for the release of Ag + ions [44].…”

Section: Antimicrobial Activity Of the Tested Filmsmentioning

confidence: 99%

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Active Double-Layered Films Enriched with AgNPs in Great Water Dock Root and Pu-Erh Extracts

et al. 2021

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A novel, eco-friendly, and biocompatible method was applied to form silver nanoparticles (AgNPs) in great water dock (Lapathi radix) (KB) and pu-erh (Camellia sinensis) (PE) extracts. The surface plasma resonance peak of green synthesized AgNPs at 451.8 nm for AgNPs+KB and 440.8 nm for AgNPs+PE was observed via spectral analysis of UV absorbance. In this study, double-layered biopolymer films (FUR/CHIT+HGEL) with AgNPs incorporated in KB solution (AgNPs+KB) and AgNPs in PE solution (AgNPs+PE), were successfully prepared using the casting method. The SEM, XRD, zeta potential and size analyses confirmed the presence of AgNP in the films. The addition of AgNPs in plant extracts improved antimicrobial and antioxidant activity and thermal stability, whereas WVTR experienced a decrease. The nanocomposite films’ orange-brown colour may aid in the protection of food products against UV rays. The composite films demonstrated antibacterial activity against food-borne pathogens and may offer potential in food packaging applications.

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Section: Physical Properties Of Tested Filmsmentioning

confidence: 99%

Section: Antimicrobial Activity Of the Tested Filmsmentioning

confidence: 99%

Active Double-Layered Films Enriched with AgNPs in Great Water Dock Root and Pu-Erh Extracts

et al. 2021

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“…The most well-known methodology utilizes stabilizing agents that can be absorbed outside Ag NPs, evading their agglomeration [ 74 ]. To stabilize and to dodge agglomeration and oxidation of NPs, capping agents can be utilized, for example chitosan, oleylamine gluconic acid, cellulose or polymers such as poly N-vinyl-2-pyrrolidone (PVP), polyethylene glycol (PEG), polymethacrylic acid (PMAA) and polymethylmethacrylate (PMMA) [ 75 ]. Adjustment using capping agents can be accomplished either through electrostatic or steric shock.…”

Section: Silver Nanoparticlesmentioning

confidence: 99%

The Recent Progress on Silver Nanoparticles: Synthesis and Electronic Applications

et al. 2021

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Nanoscience enables researchers to develop new and cost-effective nanomaterials for energy, healthcare, and medical applications. Silver nanoparticles (Ag NPs) are currently increasingly synthesized for their superior physicochemical and electronic properties. Good knowledge of these characteristics allows the development of applications in all sensitive and essential fields in the service of humans and the environment. This review aims to summarize the Ag NPs synthesis methods, properties, applications, and future challenges. Generally, Ag NPs can be synthesized using physical, chemical, and biological routes. Due to the great and increasing demand for metal and metal oxide nanoparticles, researchers have invented a new, environmentally friendly, inexpensive synthetic method that replaces other methods with many defects. Studies of Ag NPs have increased after clear and substantial support from governments to develop nanotechnology. Ag NPs are the most widely due to their various potent properties. Thus, this comprehensive review discusses the different synthesis procedures and electronic applications of Ag NPs.

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“…In addition, special amino acids such as tyrosine and cysteine from soy protein isolate (SPI) can be used as reducing agents for metal ion precursors. Furthermore, the amino and carboxyl groups on the SPI surface have a strong affinity for silver particles and can be used to stabilize and disperse silver nanoparticles, and stabilize reduced silver nanoparticles in solution [36] .…”

Section: Introductionmentioning

confidence: 99%

Study on antibacterial wood coatings with soybean protein isolate nano-silver hydrosol

Feng¹,

Zhang²,

Wang³

et al. 2022

Progress in Organic Coatings

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As the new coronavirus pneumonia swept the world in 2020, the demand for antibacterial products significantly increased. In this study, a soy protein isolate nano-silver hydrosol was prepared using an environmentally friendly Ag + in situ reduction process, where the soy protein was ultrasonically blended with polyacrylic resin to obtain a polyacrylate-nano silver antibacterial wood coating. The structure of the soy protein isolate nano-silver hydrosol was assessed, and the structure and antibacterial and mechanical properties of the film were characterized. The results showed that the silver nanoparticles (AgNPs) exhibited good crystallinity and were evenly distributed in the emulsion. The composite film had good antibacterial properties against gram-negative bacteria represented by Escherichia coli and gram-positive bacteria represented by Staphylococcus aureus . With increased nano-silver content, the diameter of the inhibition zone increased from 0 to 30 mm, and from 18 to 50 mm for the two bacteria, respectively. Moreover, the elastic modulus of the film increased from 8.173 to 97.912 MPa, and the elongation at break decreased from 240.601 to 41.038% as the content of AgNPs changed from 0.1 to 1%, respectively. Thus, this study provides a new method for preparing waterborne polyacrylate coatings with excellent antibacterial properties.

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Green Synthesis of Silver Nanoparticles Using Nymphae odorata Extract Incorporated Films and Antimicrobial Activity

Cited by 41 publications

References 60 publications

Active Double-Layered Films Enriched with AgNPs in Great Water Dock Root and Pu-Erh Extracts

Active Double-Layered Films Enriched with AgNPs in Great Water Dock Root and Pu-Erh Extracts

The Recent Progress on Silver Nanoparticles: Synthesis and Electronic Applications

Study on antibacterial wood coatings with soybean protein isolate nano-silver hydrosol

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