Electrocatalytic oxidation and electrochemical detection of guanine,<scp>l</scp>-arginine and<scp>l</scp>-lysine at a copper nanoparticles-modified electrode

Heli, H.; Sattarahmady, N.; Hajjizadeh, M.

doi:10.1039/c4ay01507j

Cited by 26 publications

(8 citation statements)

References 77 publications

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“…However, the main drawback of this method was useful for detection of a group of amino acids and was not found to be selective for L -Arginine. Another, copper nanoparticle based arginine sensor has been developed for the determination of arginine in urine sample [87] . Table 4 shown a comparative analysis of arginine sensors based on nanoparticles.…”

Section: Nanomaterials Based Arginine Sensorsmentioning

confidence: 99%

L-arginine biosensors: A comprehensive review

Verma

Singh

2017

Biochemistry and Biophysics Reports

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Arginine has been considered as the most potent nutraceutics discovered ever, due to its powerful healing property, and it's been known to scientists as the Miracle Molecule. Arginine detection in fermented food products is necessary because, high level of arginine in foods forms ethyl carbamate (EC) during the fermentation process. Therefore, L-arginine detection in fermented food products is very important as a control measure for quality of fermented foods, food supplements and beverages including wine. In clinical analysis arginine detection is important due to their enormous inherent versatility in various metabolic pathways, topmost in the synthesis of Nitric oxide (NO) and tumor growth. A number of methods are being used for arginine detection, but biosensors technique holds prime position due to rapid response, high sensitivity and high specificity. However, there are many problems still to be addressed, including selectivity, real time analysis and interference of urea presence in the sample. In the present review we aim to emphasize the significant role of arginine in human physiology and foods. A small attempt has been made to discuss the various techniques used for development of arginine biosensor and how these techniques affect their performance. The choice of transducers for arginine biosensor ranges from optical, pH sensing, ammonia gas sensing, ammonium ion-selective, conductometric and amperometric electrodes because ammonia is formed as a final product.

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Section: Nanomaterials Based Arginine Sensorsmentioning

confidence: 99%

L-arginine biosensors: A comprehensive review

Verma

Singh

2017

Biochemistry and Biophysics Reports

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“…Changes in chemical signals due to interactions, the presence of an analyte in very small amounts converting to electrical signals are detectable by electrochemical methods [ 34 - 37 ]. High reproducibility and high stability in electrochemical methods, along with minimal consumption costs, have led to extensive use and integration of electrochemical science with biology and medicine in detection of analytes [ 14 , 35 - 39 ]. Accuracy and high sensitivity of analyte detection using electrochemical methods have led to faster diagnosis and treatment of various diseases and an increase in the life quality of humans [ 14 , 30 - 33 ].…”

Section: Introductionmentioning

confidence: 99%

An Aptamer-based Biosensor for Troponin I Detection in Diagnosis of Myocardial Infarction

et al. 2018

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Background: Acute myocardial infarction (MI) accounts for one third of deaths. Cardiac troponin I (TnI) is a reliable biomarker of cardiac muscle tissue injury and is employed in the early diagnosis of MI. Objective:In this study, a molecular method is introduced to early diagnosis of MI by rapid detection of TnI. Materials and Methods: The detection method was based on electrochemical aptasensing, being developed using different methods and evaluation steps. A gold electrode was used as a transducer to successful immobilize 76base aptamer to fabricate a TnI biosensor. Results: The designed aptasensor could detect TnI in a range of 0.03 to 2.0 ng mL-1 without using any label, pre-concentration or amplification steps. The limit of detection was attained as 10 pg mL-1 without significant trouble of interfering species. The TnI biosensor demonestrated a stable, regenerative and reproducible function. 89 human samples were used to evaluate the performance of the TnI biosensor, and it represented 100% and 81%, diagnostic sensitivity and specificity, respectively. Conclusion: This aptasensor may be used as an applicable tool in the future of early medical diagnosis of MI.

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“…These methods suffer drawbacks such as complicated presampling, high cost, wastage of large amount of chemicals, etc. Electrochemical method can be considered as a good alternative for the detection of tyrosine because of its good sensitivity, selectivity, rapid response and low cost . A large number of electrochemical methods are reported using modified electrodes such as gold nanoparticles, metal oxide nanoparticles, Nafion/TiO 2 film, graphene oxide, single and multiwalled carbon nanotubes for the electrocatalytic oxidation of tyrosine .…”

Section: Introductionmentioning

confidence: 99%

Silver Patterned Supramolecular Liquid Crystalline Gels as Electrochemical Sensor of Tyrosine

2017

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Here, we have prepared silver nanoparticle patterned functional liquid crystalline gels (SFLAG) through self-assembly process. The surface plasmon energy of SFLAGs were observed at~420 nm and FCC lattices of silver particles were confirmed with XRD. Formation of liquid crystalline gel phase was studied by microscopic techniques and rheology. Enhancement in the conductance of SFLAG modified glassy carbon electrode (SFLAG/GCE) was studied with electrochemical impedance spectroscopy. Finally its application is demonstrated as an electrochemical sensor for the oxidation of tyrosine using electrochemical techniques such as cyclic voltammetry, differential pulse voltammetry and chronoamperometry with a high current response and lower detection limit (10 nM). Electrochemical sensor performances such as interference of various analytes, selectivity, repeatability, storage stability and the real sample analysis with human blood serum were performed. All these excellent properties of SFLAG/GCE can be exploited as an electrochemical sensor for the analytical detection of tyrosine which is a biomarker for the early detection of cancer.

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Electrocatalytic oxidation and electrochemical detection of guanine,l-arginine andl-lysine at a copper nanoparticles-modified electrode

Cited by 26 publications

References 77 publications

L-arginine biosensors: A comprehensive review

L-arginine biosensors: A comprehensive review

An Aptamer-based Biosensor for Troponin I Detection in Diagnosis of Myocardial Infarction

Silver Patterned Supramolecular Liquid Crystalline Gels as Electrochemical Sensor of Tyrosine

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