Seeing diabetes: visual detection of glucose based on the intrinsic peroxidase-like activity of MoS2 nanosheets

Nanoscale ◽  
2014 ◽  
Vol 6 (20) ◽  
pp. 11856-11862 ◽  
Author(s):  
Tianran Lin ◽  
Liangshuang Zhong ◽  
Liangqia Guo ◽  
Fengfu Fu ◽  
Guonan Chen
Keyword(s):  
Visual Detection ◽  
Colorimetric Detection ◽  
Serum Glucose ◽  
Mos2 Nanosheets

MoS2 nanosheets were found to possess intrinsic peroxidase-like activity and applied for the colorimetric detection of serum glucose.

scholarly journals Sulfur vacancy promoted peroxidase-like activity of magnetic greigite (Fe3S4) for colorimetric detection of serum glucose

2020 ◽  
Vol 1127 ◽  
pp. 246-255
Author(s):  
Wei Liu ◽  
Jinrong Tian ◽  
Chengliang Mao ◽  
Zhenfeng Wang ◽  
Jia Liu ◽  
...  
Keyword(s):  
Colorimetric Detection ◽  
Serum Glucose ◽  
Sulfur Vacancy

A G-quadruplex DNAzyme-based LAMP biosensing platform for a novel colorimetric detection ofListeria monocytogenes

2018 ◽  
Vol 10 (8) ◽  
pp. 848-854 ◽  
Author(s):  
Zhanmin Liu ◽  
Chenhui Yao ◽  
Yanming Wang ◽  
Cuiyun Yang
Keyword(s):  
Listeria Monocytogenes ◽  
Visual Detection ◽  
Colorimetric Detection ◽  
G Quadruplex ◽  
Oflisteria Monocytogenes ◽  
Cascade Amplification

A LAMP-based method for the visual detection ofListeria monocytogeneshas been developed by employing DNAzyme-catalyzed cascade amplification of the colorimetric signal.

Silver nanoparticle-supported hydroxyapatite as a material for visual detection of urinary cysteine

2019 ◽  
Vol 11 (22) ◽  
pp. 2888-2894 ◽  
Author(s):  
Retno Prasetia ◽  
Saowarux Fuangswasdi ◽  
Fuangfa Unob
Keyword(s):  
Silver Nanoparticle ◽  
Visual Detection ◽  
Colorimetric Detection

AgNP-supported hydroxyapatite as a new platform for colorimetric detection of urinary cysteine.

Simple and sensitive colorimetric detection of a trace amount of 2,4,6-trinitrotoluene (TNT) with QD multilayer-modified microchannel assays

2019 ◽  
Vol 3 (2) ◽  
pp. 193-198 ◽  
Author(s):  
Tao Hu ◽  
Wen Sang ◽  
Ke Chen ◽  
Hongxi Gu ◽  
Zhonghua Ni ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Trace Amount ◽  
Visual Detection ◽  
Colorimetric Detection

Two-colored quantum dot (QD) multilayer-decorated microchannel assays were fabricated for the visual detection of ultratrace levels of TNT.

A reversible fluorescent-colorimetric chemosensor based on a novel Schiff base for visual detection of CO32− in aqueous solution

RSC Advances ◽  
2016 ◽  
Vol 6 (76) ◽  
pp. 72185-72192 ◽  
Author(s):  
Anupam Ghorai ◽  
Jahangir Mondal ◽  
Rukmani Chandra ◽  
Goutam K. Patra
Keyword(s):  
Aqueous Solution ◽  
Schiff Base ◽  
Visual Detection ◽  
Colorimetric Detection ◽  
Aqueous Media ◽  
Rapid Response ◽  
Colorimetric Chemosensor ◽  
Excellent Selectivity

A novel Schiff base receptor L has been fabricated for fluorescent-colorimetric detection of CO32− in aqueous media. L shows an excellent selectivity, rapid response and reversibility and its sensitivity for CO32− is the lowest ever found (96 nM).

DNAzyme based visual detection of DNA methylation

2018 ◽  
Vol 54 (14) ◽  
pp. 1710-1713 ◽  
Author(s):  
Mei Li ◽  
Lei Zhang ◽  
Gangyi Chen ◽  
Jing Zhou ◽  
Yi Yuan ◽  
...  
Keyword(s):  
Dna Methylation ◽  
Visual Detection ◽  
Colorimetric Detection ◽  
High Specificity ◽  
Specificity And Sensitivity

The colorimetric detection of DNA methylation has been achieved with high specificity and sensitivity by using DNAzyme as a signal reporter.

scholarly journals Colorimetric Detection of Class A Soybean Saponins by G-Quadruplex-Based Hybridization Chain Reaction

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Congcong Yin ◽  
Qiaoling Zhao ◽  
Aiqin Yue ◽  
Weijun Du ◽  
Dingbin Liu ◽  
...  
Keyword(s):  
Visual Detection ◽  
Colorimetric Detection ◽  
High Specificity ◽  
Hybridization Chain Reaction ◽  
Chain Reaction ◽  
Class A ◽  
Key Enzyme ◽  
Hairpin Probes ◽  
Type Ab ◽  
Triton X

Soybean saponin is one of the important secondary metabolites in seeds, which has various beneficial physiological functions to human health. GmSg-1 gene is the key enzyme gene for synthesizing class A saponins. It is of great significance to realize the visual and rapid detection of class A saponins at the genetic level. The hybridization chain reaction (HCR) was employed to the visual detection of GmSg-1 gene, which was implemented by changing the length of the target fragment to 92 bp and using the hairpin probes we designed to detect the GmSg-1a and GmSg-1b genes. The best condition of HCR reaction is hemin (1.2 μM), Triton X-100 (0.002%), ABTS (3.8 μM), and H2O2 (1.5 mM). It was found that HCR has high specificity for GmSg-1 gene and could be applied to the visual detection of different soybean cultivars containing Aa type, Ab type, and Aa/Ab type saponins, which could provide technical reference and theoretical basis for molecular breeding of soybean and development of functional soybean products.

Colorimetric Detection of Hg(II) Sensor Based on Mos2 Nanosheets Acting as Peroxidase Mimics

2021 ◽  
Vol 37 (3) ◽  
pp. 679-682
Author(s):  
S. Kavitha ◽  
S. Mary Jelastin Kala ◽  
A. Anand Babu Christus
Keyword(s):  
Colorimetric Detection ◽  
High Sensitivity ◽  
Colorimetric Determination ◽  
X Ray Diffraction ◽  
Mos2 Nanosheets ◽  
Peroxidase Mimic ◽  
Sem Image ◽  
Peroxidase Mimics ◽  
Ft Ir

This paper presents colorimetric determination of Hg(II) based on MoS2 nanosheets with peroxidase mimics activity. The structure of the this sensor by the peroxidase mimic activity material of MoS2 nanosheets with TMB (Tetramethylbenzidine) solution, the colorimetric detection target of Hg(II) is determined by on-off mechanism using biomolecule of cysteine. The MoS2 nanosheets evaluated by X-ray diffraction, FT-IR and SEM image, confirms formation of a flower like structure. Our results shows that a simple colorimetric detection using peroxidase mimic mechanism can be used to MoS2 nanosheets and determine the Hg(II) in aqueous solution with high sensitivity (10 nM) comparable to those of other nanomaterials. The result suggests that MoS2 nanosheets is a promising new and simple colorimetric sensor for applications in environmental and biological applications.

Mild Colorimetric Detection of Sialic Acid

2004 ◽  
Vol 69 (6) ◽  
pp. 1282-1291 ◽  
Author(s):  
Youjun Yang ◽  
Patrick T. Lewis ◽  
Jorge O. Escobedo ◽  
Nadia N. St. Luce ◽  
W. Dale Treleaven ◽  
...  
Keyword(s):  
Sialic Acid ◽  
Boronic Acid ◽  
Room Temperature ◽  
Visual Detection ◽  
Colorimetric Detection ◽  
Acid Amide ◽  
Visible Region ◽  
Signaling Mechanism ◽  
Judicious Choice

As part of a broader program focusing on the detection of colorless biomolecules in the visible region, a simple and mild procedure for the visual detection of the most abundant sialic acid at room temperature and neutral pH is reported. The role of the interaction of the sialic acid amide with boron in a readily synthesized boronic acid-based receptor is an important feature of the signaling mechanism. Selectivity of reaction can be tuned by the judicious choice of solvents. This study embodies a departure from many of the author's earlier efforts in sugar solutions that are not heated, affording relatively more selective and milder detection.

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