Search results for "Biosensor System"

showing 2 items of 2 documents

Si photomultipliers for bio-sensing applications

2016

In this paper, silicon photomultipliers (SiPM) are proposed as optical detectors for bio sensing. Optical transduction is the most used detection mechanism in many biosensor applications, such as DNA microarray and real-time polymerase chain reaction. The performances of a 25 pixels device used for both applications are studied. The results confirm that the SiPM is more sensitive than the traditionally employed detectors. In fact, it is able to experimentally detect 1 nM and 100 fM of fluorophore concentrations in dried samples and solutions, respectively. We present and discuss in details the detector configuration and its characterization as fluorescence detector for bio sensing.

Optical biosensor systemPhotomultiplierFluorophoreMaterials sciencePixel010308 nuclear & particles physics010401 analytical chemistryDetectorDNA microarrayDNA microarray Optical biosensor system RT PCR Silicon PhotomultipliersNanotechnologySilicon Photomultipliers01 natural sciencesFluorescenceSettore ING-INF/01 - ElettronicaAtomic and Molecular Physics and OpticsFluorescence spectroscopy0104 chemical scienceschemistry.chemical_compoundSilicon photomultiplierchemistry0103 physical sciencesElectrical and Electronic EngineeringBiosensorRT PCR
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Rapid Assessment of Gray Mold (Botrytis cinerea) Infection in Grapes with a Biosensor System

2015

Abstract: Botrytis cinerea is the causative agent of gray mold disease, which causes considerable economic losses to winemakers. The extent of gray mold infection of winegrapes is commonly visually estimated, a method that is prone to assessor bias. Here, we used rapid and simple enzyme-based screening consisting of carbon-electrode, screen-printed amperometric biosensors to estimate gluconic acid and glycerol concentration in winegrapes infected with different degrees of B. cinerea. The lower limits of quantification of the screen-printed amperometric biosensors were 3 mg/L for gluconic acid (corresponding to an infection rate of less than 1%) and 35 mg/L for glycerol; the response times w…

glycerolAmperometric biosensorHorticulturemedicine.disease_causeGray Mold; Botrytis cinerea; Biosensor System;chemistry.chemical_compoundBotrytis cinereaMoldGlycerolmedicinegluconic acidFood scienceGray MoldBiosensor SystemBotrytis cinereabiologyfungifood and beveragesMold infectionSettore AGR/15 - Scienze E Tecnologie Alimentaribiosensorsgrapebiology.organism_classificationRapid assessmentBiochemistrychemistryGluconic acidBotrytis cinerea biosensors gluconic acid glycerol grapeBiosensorFood Science
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