Now showing items 1-6 of 6
Phytase immobilization on modified electrodes for amperometric biosensing
(Sensors and Actuators B: Chemical, 2008-04-14) [Artigo]
Phytase (myo-inositol hexaphosphate phosphohydrolase) and phytic acid (myo-inositol hexaphosphate) play an important environmental role, in addition to being a health issue in food industry. Phytic acid is antinutritional ...
Catechol biosensing using a nanostructured layer-by-layer film containing Cl-catechol 1,2-dioxygenase
(Biosensors & Bioelectronics, 2006-01-15) [Artigo]
dThe detection of aromatic compounds from pesticides and industrial wastewater has become of great interest, since these compounds withstand chemical oxidation and biological degradation, accumulating in the environment. ...
Immobilization of uricase in layer-by-layer films used in amperometric biosensors for uric acid
(Journal of Solid State Electrochemistry, 2007-11-01) [Artigo]
The layer-by-layer technique was exploited to immobilize the enzyme uricase onto indium tin oxide substrates coated with a layer of Prussian Blue. Uricase layers were alternated with either poly(ethylene imine) or ...
Nanoscale manipulation of CdSe quantum dots in layer-by-layer films: influence of the host polyelectrolyte on the luminescent properties
(Applied Surface Science, 2005-06-30) [Artigo]
Thioglycolic acid-capped Use quantum dots (QDs) were assembled on glass substrates with two distinct polyelectrolytes, viz poly(allylamine hydrochloride) (PAH) and poly(amidoamine) (PAMAM), generation 4 dendrimer, via the ...
Exploiting the versatility of taste sensors based on impedance spectroscopy
(Instrumentation Science & Technology, 2004-01-01) [Artigo]
The versatility of sensor arrays made from nanostructured Langmuir-Blodgett (LB) and layer-by-layer (LBL) films is demonstrated in two ways. First, different combinations of sensing units are employed to distinguish the ...
Layer-by-layer hybrid films of polyaniline and vanadium oxide
(Synthetic Metals, 2003-04-04) [Artigo]
Supramolecular structures of polyaniline (PANI) and vanadium oxide (V2O5) have been assembled via the electrostatic layer-by-layer (LBL) technique. The films were characterized by vibrational analyses which indicated that ...