A smartphone-based fiber-optic aptasensor for label-free detection of Plasmodium falciparum glutamate dehydrogenase

2020 ◽  
Vol 12 (10) ◽  
pp. 1333-1341
Author(s):  
Manoharan Sanjay ◽  
Naveen K. Singh ◽  
Lightson Ngashangva ◽  
Pranab Goswami
Keyword(s):  
Plasmodium Falciparum ◽  
Glutamate Dehydrogenase ◽  
Fiber Optic ◽  
Quantitative Detection ◽  
Optic Fiber ◽  
Label Free ◽  
Label Free Detection

A novel smartphone-based, multi-channel, optic fiber platform for quantitative detection of Plasmodium falciparum glutamate dehydrogenase (PfGDH) has been explored in this study.

Label-Free Detection of Escherichia coli from Mixed Bacterial Cultures Using Bacteriophage T4 on Plasmonic Fiber-Optic Sensor

ACS Sensors ◽  
2021 ◽  
Author(s):  
Pallavi Halkare ◽  
Nirmal Punjabi ◽  
Jigme Wangchuk ◽  
Santhosh Madugula ◽  
Kiran Kondabagil ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Fiber Optic ◽  
Bacteriophage T4 ◽  
Fiber Optic Sensor ◽  
Label Free ◽  
Bacterial Cultures ◽  
Optic Sensor ◽  
Label Free Detection

scholarly journals A Simple and Label-Free Detection of As3+ using 3-nitro-L-tyrosine as an As3+-chelating Ligand

Sensors ◽  
2019 ◽  
Vol 19 (13) ◽  
pp. 2857 ◽  
Author(s):  
Jin-Ho Park ◽  
Gyuho Yeom ◽  
Donggu Hong ◽  
Eun-Jung Jo ◽  
Chin-Ju Park ◽  
...  
Keyword(s):  
Detection Method ◽  
Color Change ◽  
Specific Property ◽  
Quantitative Detection ◽  
Label Free ◽  
Real Samples ◽  
Real Water Samples ◽  
Label Free Detection ◽  
Reaction Stoichiometry ◽  
Site Binding

A simple and rapid As3+ detection method using 3-nitro-L-tyrosine (N-Tyr) is reported. We discovered the specific property of N-Tyr, which specifically chelates As3+. The reaction between As3+ and N-Tyr induces a prompt color change to vivid yellow, concomitantly increasing the absorbance at 430 nm. The selectivity for As3+ is confirmed by competitive binding experiments with various metal ions (Hg2+, Pb2+, Cd2+, Cr3+, Mg2+, Ni2+, Cu2+, Fe2+, Ca2+, Zn2+, and Mn2+). Also, the N-Tyr binding site, binding affinity, and As3+/N-Tyr reaction stoichiometry are investigated. The specific reaction is utilized to design a sensor that enables the quantitative detection of As3+ in the 0.1–100 μM range with good linearity (R2 = 0.995). Furthermore, the method’s applicability for the analysis of real samples, e.g., tap and river water, is successfully confirmed, with good recoveries (94.32–109.15%) using As3+-spiked real water samples. We believe that our discovering and its application for As3+ analysis can be effectively utilized in environmental analyses such as those conducted in water management facilities, with simplicity, rapidity, and ease.

DNA aptamer-based fiber optic biosensor for selective and label-free detection of dopamine

2015 ◽  
Author(s):  
M. I. Zibaii ◽  
H. Latifi ◽  
A. Asadollahi ◽  
A. H. Bayat ◽  
A. Haghparast
Keyword(s):  
Fiber Optic ◽  
Dna Aptamer ◽  
Label Free ◽  
Label Free Detection

scholarly journals Label-free detection of DNA hybridization with a compact LSPR-based fiber-optic sensor

The Analyst ◽  
2017 ◽  
Vol 142 (11) ◽  
pp. 1974-1981 ◽  
Author(s):  
Savannah Kaye ◽  
Zheng Zeng ◽  
Mollye Sanders ◽  
Krishnan Chittur ◽  
Paula M. Koelle ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Dna Hybridization ◽  
Localized Surface Plasmon Resonance ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Localized Surface Plasmon ◽  
Label Free ◽  
Optic Sensor ◽  
Label Free Detection

A miniaturized, robust, localized surface plasmon resonance (LSPR)–coupled fiber-optic (FO) nanoprobe providing an integrated and portable solution for detection of DNA hybridization and measurement of DNA concentrations has been demonstrated.

Evanescent wave absorbance based fiber optic biosensor for label-free detection of E. coli at 280nm wavelength

2011 ◽  
Vol 26 (7) ◽  
pp. 3367-3370 ◽  
Author(s):  
Reshma Bharadwaj ◽  
V.V.R. Sai ◽  
Kamini Thakare ◽  
Arvind Dhawangale ◽  
Tapanendu Kundu ◽  
...  
Keyword(s):  
Evanescent Wave ◽  
Fiber Optic ◽  
Label Free ◽  
E Coli ◽  
Label Free Detection
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