Dextrin-mediated synthesis of Ag NPs for colorimetric assays of Cu 2+ ion and Au NPs for catalytic activity

Bankura, Kalipada; Rana, Dipak; Mollick, Md. Masud Rahaman; Pattanayak, Sutanuka; Bhowmick, Biplab; Saha, Nayan Ranjan; Roy, Indranil; Midya, Tarapada; Barman, Gadadhar; Chattopadhyay, Dipankar

doi:10.1016/j.ijbiomac.2015.06.058

Cited by 32 publications

(11 citation statements)

References 53 publications

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“…Findings showed that dextrin-based AgNPs played a colorimetric sensor role in detecting Cu 2+ through two mechanisms of Cu 2+ -induced aggregation and/or direct deposition of Cu 2+ onto AgNPs (Fig. 8.8B) [141]. In addition, AgNPs (spherical shape, 20-35 nm) prepared in the aqueous solutions of xylan (as reducing and stabilizing agent) under microwave irradiation were also suggested as a highly sensitive and selective sensor for detecting mercury ions (Hg 2+ ) in environmental water.…”

Section: Concentration Of H 2 Omentioning

confidence: 99%

“…The method used by Bankura and colleagues to synthesize AgNPs using dextrin ( Fig. 8.8A) was in an aqueous medium without a need for the addition of alkali [141]. Findings showed that dextrin-based AgNPs played a colorimetric sensor role in detecting Cu 2+ through two mechanisms of Cu 2+ -induced aggregation and/or direct deposition of Cu 2+ onto AgNPs (Fig.…”

Section: Concentration Of H 2 Omentioning

confidence: 99%

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Green synthesis of polysaccharide-based inorganic nanoparticles and biomedical aspects

Shavandi¹,

Saeedi

Ali

et al. 2019

Functional Polysaccharides for Biomedical Applications

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Section: Concentration Of H 2 Omentioning

confidence: 99%

Section: Concentration Of H 2 Omentioning

confidence: 99%

Green synthesis of polysaccharide-based inorganic nanoparticles and biomedical aspects

Shavandi¹,

Saeedi

Ali

et al. 2019

Functional Polysaccharides for Biomedical Applications

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“…Compared to AuNPs, the SPR effect in AgNPs projects further from the surface, and is tunable over a broader range of wavelengths (350-450 nm). Larger AgNPs show effective SERS properties and are excellent candidates for the detection of single molecules [186, 188, 213].…”

Section: - Silver Nanoparticles (Agnps): Synthesis Functionalizatiomentioning

confidence: 99%

Optical assays based on colloidal inorganic nanoparticles

Ghasemi

Rabiee

Ahmadi

et al. 2018

Analyst

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Colloidal inorganic nanoparticles have wide applications in the detection of analytes and in biological assays. A large number of these assays rely on the ability of gold nanoparticles (AuNPs, in the 20 nm diameter size range) to undergo a color change from red to blue upon aggregation. AuNP assays can be based on cross-linking, non-cross linking or unmodified charge-based aggregation. Nucleic acid-based probes, monoclonal antibodies, and molecular-affinity agents can be attached by covalent or non-covalent means. Surface plasmon resonance and SERS techniques can be utilized. Silver NPs also have attractive optical properties (higher extinction coefficient). Combinations of AuNPs and AgNPs in nanocomposites can have additional advantages. Magnetic NPs and ZnO, TiO and ZnS as well as insulator NPs including SiO can be employed in colorimetric assays, and some can act as peroxidase mimics in catalytic applications. This review covers the synthesis and stabilization of inorganic NPs and their diverse applications in colorimetric and optical assays for analytes related to environmental contamination (metal ions and pesticides), and for early diagnosis and monitoring of diseases, using medically important biomarkers.

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“…On this basis, some PMNPs had been developed as biosensors and probes. It had been demonstrated that alginate and dextrin based AgNPs showed a concentration dependent changes in the absorbance of manganese (II) and copper (II), separately, suggesting a good application in the detection of metal ions [165,166]. Conventional methods of detection of melamine are complex and time-consuming.…”

Section: Application Of Pmnpsmentioning

confidence: 99%

Preparation, Characterization and Application of Polysaccharide-Based Metallic Nanoparticles: A Review

et al. 2017

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Abstract:Polysaccharides are natural biopolymers that have been recognized to be the most promising hosts for the synthesis of metallic nanoparticles (MNPs) because of their outstanding biocompatible and biodegradable properties. Polysaccharides are diverse in size and molecular chains, making them suitable for the reduction and stabilization of MNPs. Considerable research has been directed toward investigating polysaccharide-based metallic nanoparticles (PMNPs) through host-guest strategy. In this review, approaches of preparation, including top-down and bottom-up approaches, are presented and compared. Different characterization techniques such as scanning electron microscopy, transmission electron microscopy, dynamic light scattering, UV-visible spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction and small-angle X-ray scattering are discussed in detail. Besides, the applications of PMNPs in the field of wound healing, targeted delivery, biosensing, catalysis and agents with antimicrobial, antiviral and anticancer capabilities are specifically highlighted. The controversial toxicological effects of PMNPs are also discussed. This review can provide significant insights into the utilization of polysaccharides as the hosts to synthesize MPNs and facilitate their further development in synthesis approaches, characterization techniques as well as potential applications.

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Dextrin-mediated synthesis of Ag NPs for colorimetric assays of Cu 2+ ion and Au NPs for catalytic activity

Cited by 32 publications

References 53 publications

Green synthesis of polysaccharide-based inorganic nanoparticles and biomedical aspects

Green synthesis of polysaccharide-based inorganic nanoparticles and biomedical aspects

Optical assays based on colloidal inorganic nanoparticles

Preparation, Characterization and Application of Polysaccharide-Based Metallic Nanoparticles: A Review

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