نتایج جستجو برای: impedimetric

تعداد نتایج: 396  

Journal: :The Analyst 2016
L Klukova J Filip S Belicky A Vikartovska J Tkac

A label-free ultrasensitive impedimetric biosensor with lectin immobilised on graphene oxide (GO) for the detection of glycoproteins from 1 aM is shown here. This is the first time a functional lectin biosensor with lectin directly immobilised on a graphene-based interface without any polymer modifier has been described. The study also shows that hydrophilic oxidative debris present on GO has a...

2003
A. Sofia Carvalho Joana Silva Peter Ho Paula Teixeira F. Xavier Malcata Paul Gibbs

The residual activity of Lactobacillus delbrueckii ssp. bulgaricus cultures was analysed using pH and various impedimetric methods (impedance detection time (IDT), conductance and capacitance) to quantify the loss in activity following freeze-drying. The large variation recorded in IDT values for similar levels of activity suggests that IDT is not an adequate parameter for estimating the cultur...

Journal: :Pakistan Journal of Biological Sciences 2005

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