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Acrolein detection based on alcohol dehydrogenase inhibition

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This paper presents the effect of acrolein on three dehydrogenases and proposes a fast spectrometric method for acrolein analysis. We have found that alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (AlDH) are inhibited by low acrolein concentrations (0.2 mM) while inhibition of glutamate dehydrogenase (GDH) is not observed even at higher acrolein concentrations (1 mM). Acrolein is a suicide substrate for AlDH and ADH inhibition by acrolein is competitive. Cysteine (L-Cys) and glutathione (GSH) react with acrolein and thus reduce its expected inhibitory effect. ADH was chosen to develop a spectrophotometric method for acrolein analysis based on enzyme inhibition. The calibration curve is linear between 0.2 and 1.0 mM acrolein.
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Keywords: acrolein analysis; acrolein inhibition; alcohol dehydrogenase; aldehyde dehydrogenase; glutamate dehydrogenase

Document Type: Research Article

Affiliations: 1: Applied Chemistry and Materials Science Faculty, Polytechnica University of Bucharest, 1-7 Polizu, 011061 Bucharest, Romania 2: National Institute of Research and Development of Biological Sciences, Bioanalysis Center, 296 Splaiul Independentei060031 Bucharest, Romania

Publication date: March 1, 2013

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