Detailed Information on Publication Record
1999
Sensitive amperometric biosensor for the determination of biogenic and synthetic amines using pea seedling amine oxidase: a novel approach for enzyme immobilisation
WIMMEROVÁ, Michaela and Lumír MACHOLÁNBasic information
Original name
Sensitive amperometric biosensor for the determination of biogenic and synthetic amines using pea seedling amine oxidase: a novel approach for enzyme immobilisation
Authors
WIMMEROVÁ, Michaela (203 Czech Republic, guarantor) and Lumír MACHOLÁN (203 Czech Republic)
Edition
Biosensors & Bioelectronics, Oxford, Elsevier Advanced Technology, 1999, 0956-5663
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10600 1.6 Biological sciences
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 2.020
RIV identification code
RIV/00216224:14310/99:00008547
Organization unit
Faculty of Science
Keywords in English
biosensor; amine oxidase; immobilisation
Tags
Změněno: 11/3/2004 16:15, prof. RNDr. Michaela Wimmerová, Ph.D.
Abstract
V originále
We prepared a new inorganic sorbent based on modified triazine (2-[4,6-bis (aminoethylamine)-1,3,5-triazine]-Silasorb; BAT-Silasorb) which binds pea seedlings amine oxidase (PSAO) very tightly without loss of its catalytic activity. This unique feature as well as the wide substrate specificity of PSAO was successfully utilised in the construction of an amperometric biosensor based on a carbon paste electrode for the fast and sensitive detection of various amines at a formal potential 0 mV versus Ag:AgCl reference electrode. The reaction layer of the biosensor is created by the direct immobilisation of PSAO at the electrode surface via affinity carrier BAT-Silasorb. Used arrangement facilitates a simple restoration of the inactive biosensor. An amperometric signal results from horseradish peroxidase catalysed reduction of H2O2, a secondary product of the oxidative deamination of amines, catalysed by PSAO. The sensor was used for the basic characterisation of 55 biogenic and synthetic amines, from numerous mono-, di- and polyamines to various hydroxy-, thio-, benzyl- and aromatic derivatives in order to establish its suitability as a postcolumn detector. Its high sensitivity to putrescine, a limit of detection of 10 nmol/l (determined with respect to a signal-to-noise ratio 3:1), a linear range of current response to 0.01-100 mmol/l concentration of substrate and good reproducibility all indicate that the sensor could be applied to future industrial and clinical analyses.
Links
MSM 143100005, plan (intention) |
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