Multiplexed paper test strip for quantitative bacterial detection

2012 ◽  
Vol 403 (6) ◽  
pp. 1567-1576 ◽  
Author(s):  
S. M. Zakir Hossain ◽  
Cory Ozimok ◽  
Clémence Sicard ◽  
Sergio D. Aguirre ◽  
M. Monsur Ali ◽  
...  
Keyword(s):  
Test Strip ◽  
Paper Test ◽  
Bacterial Detection

Determination of Cr(VI) concentration in diluted samples based on the paper test strip method

2009 ◽  
Vol 60 (12) ◽  
pp. 3083-3089 ◽  
Author(s):  
F. Kong ◽  
Y. Ni
Keyword(s):  
High Selectivity ◽  
Reference Method ◽  
Test Strip ◽  
Aliquat 336 ◽  
Color Intensity ◽  
Paper Test ◽  
Detection Range ◽  
Concentration Determination ◽  
Strip Method

At present, there are many methods for Cr(VI) concentration determination in diluted samples, however, these methods have their own inherent drawbacks, such as long response time, complicated pretreatment, expensive equipment etc. In this paper, a paper-based test strip method specific for determination of diluted Cr(VI) samples was developed. In this method, Aliquat 336, as an anion exchanger was loaded into filter paper to form a test strip. This test strip was used to pre-concentrate Cr(VI) when contacting with the diluted Cr(VI)-containing solution. The Cr(VI)-containing test strip was then immersed into a diphenylcarbazide (DPC) solution (a color forming solution), and the color intensity was correlated to the Cr(VI) concentration. The detection range of the present method was found to be 0.02–1.50 mg/L. The results also showed that the method gave a high selectivity for Cr(VI) in the diluted samples to be tested. The method was applied to synthesized samples and the results, which were compared to those from a reference method, showed that the developed method is an effective, reliable way for Cr(VI) determination in diluted samples.

Rapid and highly sensitive detection of mercury ions using a fluorescence-based paper test strip with an N-alkylaminopyrazole ligand as a receptor

2012 ◽  
Vol 22 (13) ◽  
pp. 5978 ◽  
Author(s):  
Gemma Aragay ◽  
Helena Montón ◽  
Josefina Pons ◽  
Mercè Font-Bardía ◽  
Arben Merkoçi
Keyword(s):  
Test Strip ◽  
Sensitive Detection ◽  
Mercury Ions ◽  
Paper Test ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

scholarly journals Gustometry in various variants of bronchial asthma: Sensitivity thresholds for bitter and sweet tast

2021 ◽  
Vol 23 (1) ◽  
pp. 117-126
Author(s):  
V. N. Mineev ◽  
M. A. Nyoma ◽  
L. N. Sorokina ◽  
P. V. Bryukhanova ◽  
D. E. Koksharova
Keyword(s):  
Bronchial Asthma ◽  
Clinical Stage ◽  
High Sensitivity ◽  
Test Strip ◽  
Sweet Taste ◽  
Taste Sensitivity ◽  
Sensitivity Index ◽  
Test Substance ◽  
Paper Test ◽  
Healthy Persons

The first studies were published on the possible pathogenetic role of so-called ectopically localized taste receptors in bronchial asthma. The receptors for bitter and sweet taste, may, apparently, have opposite functions, but in available literature there is no data on the balance of sensitivity for bitter and sweet tastes in the same patients with bronchial asthma. The aim of the present work is to simultaneously assess the sensitivity of canonical lingual receptors to bitter and sweet taste in the same patients with different clinical variants of bronchial asthma by methods applicable in wide clinical practice. 16 healthy persons and 35 patients with bronchial asthma were examined at the M.V. Chernorutsky Clinics of Hospital Therapy at First St. Petersburg State I. Pavlov Medical University. The sensitivity for bitter taste was assessed using The Frey Scientific 569885 PTC Taste Paper test strip kit containing phenylthiourea solution. Sucrose solutions at concentrations of 0.3; 0,4; 0,5; 0,6; 0,7; 0,8; 0,9 % for determination of individual value of taste thresholds to sweet taste were used. The bitter-to-sweet taste sensitivity balance was assessed on the basis of an original “bitter/sweet taste sensitivity” index. The highest values of index of bitter/sweet taste was found in the allergic variant of bronchial asthma: its values are significantly different from those in healthy persons only at low sucrose concentrations (0.3-0.4%). The factor analysis revealed an association between taste imbalance (a shift towards high sensitivity to sweet taste) and key characteristics of bronchial asthma, including severity of bronchial asthma course, duration of inhaled glucocorticosteroid use and inefficiency of β2-agonists use at pre-clinical stage. It has been revealed by gustometry that in the allergic variant of bronchial asthma there is a decreased sensitivity for bitter test substance (phenylthiourea), along with higher sensitivity for sweet taste (sucrose).

scholarly journals DEVELOPMENT OF PAPER-BASED COLOR TEST-STRIP FOR PARACETAMOL DETECTION IN JAMU

2020 ◽  
Vol 7 (2) ◽  
pp. 137-142
Author(s):  
Triswanto Sentat ◽  
Henny Nurhasnawati ◽  
Yunita Rachma Dwinand
Keyword(s):  
Herbal Medicine ◽  
Herbal Medicines ◽  
Test Strip ◽  
Positive Control ◽  
Color Reaction ◽  
Paper Test ◽  
Color Test ◽  
Traditional Medicines ◽  
Synthetic Chemicals ◽  
Qualitative Test

Chemical medicine which are synthetic chemicals or isolation products must not be added to herbal medicine, that was standared by Indonesian Head of the Drug and Food Control Agency in statement regarding Criteria and Procedure for Registration of Traditional Medicines, Standardized Herbal Medicines, and Phytofarmaka. This study aims to develope prototype of paper-based color test-strip to identify paracetamol trace in several types of Indonesian herbal medicine, better known as Jamu. Research conducted with experimental research wich make paper test-strip prototype by immobilizing reagents into Whatman’s filter paper, then it used to identify paracetamol in extracted Jamu samples. The paracetamol qualitative test uses 10 Jamu samples that distributed in Samarinda area. were also carried out on. Comparison methode with qualitative color reaction tests using specific reagents in the laboratory were also carried out beside the paper-based color test-strip methode. In addition with positive control tests using 5000 ppm paracetamol solution to make sure both methode used are valid. The results of this study showed that two prototype paper-based color test-strips containing 10% iron (III) chloride reagent and folin ciocalteu were able to detect the presence of paracetamol chemicals in Jamu samples with color reaction.

875-P: Utilization of Continuous Glucose Monitors Is Associated with Reduction in Inpatient and Outpatient Emergency Acute Diabetes Events Regardless of Prior Blood Test Strip Usage

Diabetes ◽  
2020 ◽  
Vol 69 (Supplement 1) ◽  
pp. 875-P
Author(s):  
IRL B. HIRSCH ◽  
MATTHEW S.D. KERR ◽  
GREGORY J. ROBERTS ◽  
DIANA SOUTO ◽  
YELENA NABUTOVSKY ◽  
...  
Keyword(s):  
Blood Test ◽  
Test Strip ◽  
Acute Diabetes ◽  
P Utilization ◽  
Continuous Glucose Monitors

Carbon Dots for Bacterial Detection and Antibacterial Applications-A Minireview

2020 ◽  
Vol 25 (46) ◽  
pp. 4848-4860 ◽  
Author(s):  
Anisha Anand ◽  
Gopinathan Manavalan ◽  
Ranju Prasad Mandal ◽  
Huan-Tsung Chang ◽  
Yi-Ru Chiou ◽  
...  
Keyword(s):  
Optical Properties ◽  
Carbon Dots ◽  
Antibacterial Effect ◽  
Bacterial Detection ◽  
High Brightness ◽  
Photo Catalysis ◽  
Wide Range ◽  
Prevention And Treatment ◽  
Low Toxicity ◽  
Conventional Antibiotics

: The prevention and treatment of various infections caused by microbes through antibiotics are becoming less effective due to antimicrobial resistance. Researches are focused on antimicrobial nanomaterials to inhibit bacterial growth and destroy the cells, to replace conventional antibiotics. Recently, carbon dots (C-Dots) become attractive candidates for a wide range of applications, including the detection and treatment of pathogens. In addition to low toxicity, ease of synthesis and functionalization, and high biocompatibility, C-Dots show excellent optical properties such as multi-emission, high brightness, and photostability. C-Dots have shown great potential in various fields, such as biosensing, nanomedicine, photo-catalysis, and bioimaging. This review focuses on the origin and synthesis of various C-Dots with special emphasis on bacterial detection, the antibacterial effect of CDots, and their mechanism.

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