Colorimetric detection of melamine using β-cyclodextrin-functionalized silver nanoparticles

Xavier, Sheena; Karthikeyan, Chandrasekaran; kumar, G. Gnana; Kim, Ae Rhan; Yoo, Dong Jin

doi:10.1039/c4ay01183j

Cited by 71 publications

(18 citation statements)

References 42 publications

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“…Due to all these properties, several colorimetric systems have been set up to detect ions (Chen et al 2015), amino acids (Ghosh et al 2014), viruses , melamine (Xavier et al 2014), and so on. It should be noted that although some colorimetric assays for melamine are reported (Table S1), unfortunately, they often suffer from relatively poor sensitivity, selectivity, and anti-interference ability to some common substances in milk, which limits them in practical applications to some extent.…”

Section: Introductionmentioning

confidence: 99%

Colorimetric detection of melamine based on p-chlorobenzenesulfonic acid-modified AuNPs

Huang

2016

J Nanopart Res

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A highly selective and sensitive method is developed for colorimetric detection of melamine using gold nanoparticles (AuNPs) functionalized with p-chlorobenzenesulfonic acid. The addition of melamine induced the aggregation of AuNPs, as evidenced from the morphological characterizations and the color changed from red wine to blue, which could also be monitored by the UV-visible spectrometer and even naked eyes. This process caused a significant increase in the absorbance ratio (A 650nm /A 520nm ) of pchlorobenzenesulfonic acid-AuNPs. Under optimized conditions, the system exhibited a linear response to melamine in the range of 6.0 9 10 -7 -1.5 9 10 -6 mol L -1 with a correlation coefficient of 0.997, and the limit of detection can even be 2.3 nM, which was much lower than some other methods and the safe limits (20 lM in both the USA and EU, 8.0 lM for infant formula in China, 1.2 lM in the CAC (Codex Alimentarius Commission) review for melamine in liquid infant formula). More importantly, the developed method presented excellent tolerance to coexisting common metal ions such as Ca 2? , Zn 2? , whose concentration is 1000 times of melamine, so that it had been applied to the analysis of melamine in liquid milk and milk powder with the recovery of 97.0-101 % and 100-103 %, respectively, indicating that the proposed method is quite a highly effective means to determine melamine in milk products.

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Section: Introductionmentioning

confidence: 99%

Colorimetric detection of melamine based on p-chlorobenzenesulfonic acid-modified AuNPs

Huang

2016

J Nanopart Res

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“…The UV-visible absorptions of obtained silver, gold, and silver-gold bimetallic NPs in dextran were shown in Figure 1. As can be seen in Figures 1(a) and 1(c), the UV-visible spectra of the silver/dextran and gold/dextran exhibited bands at 424 nm and 557 nm, respectively, which 5 Journal of Nanomaterials could be indexed to the visible surface plasmon resonance band of respective Ag and Au NPs [36,37]. Compared with the spectroscopic profile of Ag/dextran and Au/dextran colloid suspensions, the UV-visible absorption bands of Ag-Au bimetallic NPs in dextran were 518, 530, and 542 nm for samples S7, S5, and S3, respectively, suggesting that a longer surface plasmon resonance wavelength could be tuned through decreasing the raw ratio of Ag/Au.…”

Section: Resultsmentioning

confidence: 94%

Silver, Gold, and Silver-Gold Bimetallic Nanoparticle-Decorated Dextran: Facile Synthesis and Versatile Tunability on the Antimicrobial Activity

Diem

Phuong

Hiến

et al. 2020

Journal of Nanomaterials

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The noble metal-based nanoparticles (NPs) have been considered as potential antimicrobial agents because of their good antibacterial and antifungal activities as well as biocompatible nature. In this study, we have introduced a simple and fast route to synthesize silver, gold, and silver-gold bimetallic NP-decorated dextran. The as-synthesized noble metal-based NPs with spherical geometry showed high dispersity in dextran. The antibacterial and antifungal of obtained nanomaterials were tested with Xanthomonas oryzae pv. oryzae (Xoo) bacteria and Magnaporthe grisea (M. grisea) fungi. The silver NPs and bimetallic NPs with high silver content in dextran exhibited excellent activity to inhibited the growth of the bacteria and fungi, whereas the gold/dextran has weak antimicrobial effects. The antibacterial and antifungal properties of silver-gold bimetallic NPs in dextran biopolymer can be tuned according to the content of silver in the bimetallic NPs. The obtained nanomaterials could open an entry to a new class of antibiotics.

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“…Interestingly, in the presence of arsenic (III), these functional silver nanoparticles interacted with PEG hydroxyl groups, which led to the aggregation of silver nanoparticles [ 67 ]. As a result, the color of functionalized nanoparticles changed from yellow to bluish [ 40 ], as shown in Figure 5 .…”

Section: Colorimetric Sensing Of Arsenicmentioning

confidence: 99%

Recent Advances in Colorimetric Detection of Arsenic Using Metal-Based Nanoparticles

Kolya

Hashitsume

Kang

2021

Toxics

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Nowadays, arsenic (III) contamination of drinking water is a global issue. Laboratory and instrument-based techniques are typically used to detect arsenic in water, with an accuracy of 1 ppb. However, such detection methods require a laboratory-based environment, skilled labor, and additional costs for setup. As a result, several metal-based nanoparticles have been studied to prepare a cost-effective and straightforward detector for arsenic (III) ions. Among the developed strategies, colorimetric detection is one of the simplest methods to detect arsenic (III) in water. Several portable digital detection technologies make nanoparticle-based colorimetric detectors useful for on-site arsenic detection. The present review showcases several metal-based nanoparticles that can detect arsenic (III) colorimetrically at a concentration of ~0.12 ppb or lower in water. A literature survey suggests that biomolecule-based metal nanoparticles could serve as low-cost, facile, susceptible, and eco-friendly alternatives for detecting arsenic (III). This review also describes future directions, perspectives and challenges in developing this alternative technology, which will help us reach a new milestone in designing an effective arsenic detector for commercial use.

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Colorimetric detection of melamine using β-cyclodextrin-functionalized silver nanoparticles

Cited by 71 publications

References 42 publications

Colorimetric detection of melamine based on p-chlorobenzenesulfonic acid-modified AuNPs

Colorimetric detection of melamine based on p-chlorobenzenesulfonic acid-modified AuNPs

Silver, Gold, and Silver-Gold Bimetallic Nanoparticle-Decorated Dextran: Facile Synthesis and Versatile Tunability on the Antimicrobial Activity

Recent Advances in Colorimetric Detection of Arsenic Using Metal-Based Nanoparticles

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