1,721,136 research outputs found
Microdialysis and glucose biosensor for in-vivo monitoring
No full textMicrodialysis coupled to a glucose biosensor led to a continuous monitor system in vivo for glucose. Several microdialysis probes were used to stabilize the biosensor response. In vivo experiments, especially when the probe was placed subcutaneously, showed that the sensitivity of the biosensor decreased continuously; various kinds of fibers with a molecular weight cut-off (MWCO) ranging from 6 000 to 20 000 were compared. A wall-jet flow cell as detector for glucose showed less interference when compared to a thin layer cell. Glucoday, a new commercial instrument based on this principle, is presented
Subcutaneous microdialysis probe coupled with glucose biosensor for in vivo continuous monitoring
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Glucose and lactate biosensors coupled with microdialysis probe for continuous monitoring
No full textInvestigation of glycated protein assay for assessing heat treatment effect in food samples and protein-sugar models
Full text linkElectrochemical determination of capsaicin in pepper samples using sustainable paper-based screen-printed bulk modified with carbon black
No full textSustainable development goals reported in 2030 Agenda established the global challenges in different fields including agrifood, health, and climate change. Smart electrochemical eco-designed sensors can support the achievement of some goals thanks the capability to detect analyte on site using cost-effective instrumentation by unskilled personnel. Herein, we report the first office paper-based sensor fabricated by merging cost-effective technique namely screen- and wax-printing with cheap materials namely paper and carbon black for sustainable detection of capsaicin. By using differential pulse and square wave voltammetry capsaicin was detected at potential close to 0.5 V observing a linear range from 0.20 to 8.0 μmol L−1 and from 0.080 to 6.0 μmol L−1, sensitivity of 1.11 A mol−1 L and 1.97 A mol−1 L, and detection limit of 0.085 μmol L−1 and 0.028 μmol L−1, respectively. The accuracy of the paper-based device was assessed determining capsaicin in tabasco sauce, black pepper, and red pepper by recovery study, obtaining recovery values ranging from 93% to 110%. The analytical features achieved demonstrated the suitability of this paper and carbon black-based analytical tool for application in agrifood sector, boosting the sustainable management of quality control in food commodities
Prussian Blue modified carbon nanotube paste electrodes: A comparative study and a biochemical application
Full text linkPrussian Blue based screen printed biosensors with improved characteristics of long-term lifetime and pH stability
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