Colorimetric assay for mercury (II) based on mercury-specific deoxyribonucleic acid-functionalized gold nanoparticles

2011 ◽  
Vol 694 (1-2) ◽  
pp. 115-119 ◽  
Author(s):  
Jikui Wu ◽  
Lanying Li ◽  
Dan Zhu ◽  
Pingang He ◽  
Yuzhi Fang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Deoxyribonucleic Acid ◽  
Colorimetric Assay ◽  
Functionalized Gold Nanoparticles

Colorimetric assay based on arginine-functionalized gold nanoparticles for detection of dibutyl phthalate in Baijiu samples

2021 ◽  
Author(s):  
Yumei Yan ◽  
Yuan Qu ◽  
Rui Du ◽  
Wenfeng Zhou ◽  
Haixiang Gao ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Dibutyl Phthalate ◽  
Colorimetric Assay ◽  
Colorimetric Method ◽  
Functionalized Gold Nanoparticles ◽  
Induced Aggregation

In this paper, a simple and innovative colorimetric method is established, which is based on DBP-induced aggregation of arginine functionalized gold nanoparticles (ARG-AuNPs), and can be used for the sensitive...

Colorimetric sensing of atrazine in rice samples using cysteamine functionalized gold nanoparticles after solid phase extraction

2016 ◽  
Vol 8 (1) ◽  
pp. 52-56 ◽  
Author(s):  
Guangyang Liu ◽  
Shanshan Wang ◽  
Xin Yang ◽  
Tengfei Li ◽  
Yongxin She ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Colorimetric Assay ◽  
Phase Extraction ◽  
Colorimetric Sensing ◽  
Functionalized Gold Nanoparticles ◽  
Rice Samples

A colorimetric assay for the determination of atrazine in rice samples using cysteamine–gold nanoparticles after solid phase extraction has been developed.

Smart phone assisted, rapid, simplistic, straightforward and sensitive biosensing of cysteine over other essential amino acids by β-cyclodextrin functionalized gold nanoparticles as a colorimetric probe

2020 ◽  
Vol 44 (28) ◽  
pp. 12169-12177 ◽  
Author(s):  
Ramar Rajamanikandan ◽  
Asokan Dhivya Lakshmi ◽  
Malaichamy Ilanchelian
Keyword(s):  
Amino Acids ◽  
Gold Nanoparticles ◽  
Colorimetric Assay ◽  
Smart Phone ◽  
Essential Amino Acids ◽  
Colorimetric Probe ◽  
Functionalized Gold Nanoparticles ◽  
Functionalized Aunps

Herein, we have attempted the synthesis of β-CD functionalized AuNPs and then applied them as a colorimetric assay for the quantification of Cys over other different essential amino acids.

An Effort to Making a Colorimitric Nano-Biosensor for Vibrio cholera Detection

2020 ◽  
Vol 16 (5) ◽  
pp. 793-804
Author(s):  
Naimeh Mahheidari ◽  
Jamal Rashidiani ◽  
Hamid Kooshki ◽  
Khadijeh Eskandari
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Assay ◽  
Au Nanoparticle ◽  
Bacteria Detection ◽  
Great Promise ◽  
Bacterial Cells ◽  
Vibrio Cholera ◽  
Minimum Concentration ◽  
Vis Spectroscopy ◽  
Fast Procedure

Background: Today, nanoparticles hold great promise in biomedical researches and applications including bacteria detection. The rapid and sensitive outcomes of bacteria detection strategies using nanoparticle conjugates become determinative, especially in bacterial outbreaks. In the current research, we focused on detecting V. cholera bacteria and its toxin using a thiocyanate/Au nanoparticle. Thiocyanate adsorbed strongly on the surface of gold nanoparticles and changed the surface by enhancing surface plasmon resonance of gold nanoparticles. Objective: This method is tried to introduce a simple and fast procedure to assay vibrio cholera. So, it is observed by the naked eyes as well. Methods: We used two antibodies (Ab) for V. cholera detection: a) a primary antibody conjugated to magnetic nanoparticles (MNPs) for trapping V. cholera bacterial cells, and b) a secondary Abconjugated thiocyanate-GNPs as a colorimetric detector. Then, an immuno-magnetic separation system connected to a colorimetric assay was designed based on the GNPs. The results were measured by ultraviolet-visible (UV-Vis) spectroscopy. Results: The results showed that gold nanoparticles are an appropriate optical assay for detecting biological samples in a minimum concentration and also it can be easily seen by the naked eyes. The linear range of this biosensor is 3.2×104 to 28×104 cells per ml. Conclusion: In this research, a colorimetric immune assay based on gold nanoparticles was designed to improve the sensitivity of V. cholera detection. Also, this method can be used for the detection of other biological agents.

scholarly journals Correction: Poly(adenine)-mediated DNA-functionalized gold nanoparticles for sensitive detection of mercury ions in aqueous media

RSC Advances ◽  
2021 ◽  
Vol 11 (37) ◽  
pp. 22691-22691
Author(s):  
Jinjin Yin ◽  
Jiuchao Wang ◽  
Xiyue Yang ◽  
Tao Wu ◽  
Huashan Wang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Aqueous Media ◽  
Sensitive Detection ◽  
Mercury Ions ◽  
Functionalized Gold Nanoparticles

Correction for ‘Poly(adenine)-mediated DNA-functionalized gold nanoparticles for sensitive detection of mercury ions in aqueous media’ by Jinjin Yin et al., RSC Adv., 2019, 9, 18728–18733, DOI: 10.1039/C9RA03041G.

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