ABTS assay of phenol oxidase activity in soil
| Autor: | Enrique Alarcón-Gutiérrez, Carine Floch, Stéven Criquet |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Microbiology (medical)
Buffers Microbiology chemistry.chemical_compound Soil Bioassay Phenol Soil Pollutants Benzothiazoles Polycyclic Aromatic Hydrocarbons Molecular Biology ABTS Chromatography Monophenol Monooxygenase Temperature Substrate (chemistry) Hydrogen-Ion Concentration Soil quality Kinetics chemistry Environmental chemistry Soil water Degradation (geology) Biological Assay Sulfonic Acids |
| Zdroj: | Journal of microbiological methods. 71(3) |
| ISSN: | 0167-7012 |
| Popis: | Phenol oxidases (PO) are involved in degradation of many recalcitrant aromatic compounds and may be sensitive to some pollutants. Hence, their activities may be a useful indicator for evaluating soil quality and health. To this end, the aim of this study was to develop a simple method to assay PO activity directly in bulk samples by spectrophotometric test using 2,2'-azinobis-(-3 ethylbenzothiazoline-6-sulfononic acid) diammonium salt (ABTS) as the substrate. Three Mediterranean soils were used as models. For each soil, we studied the kinetic parameters and the effects of certain factors (i.e. amount of soil, pH, temperature, incubation time and substrate concentration) in order to determine the optimum conditions for the ABTS assay. Results showed that PO attain their optimum activities when incubating 0.1 g of soil at 30 degrees C for 5 min with 10 ml of a Modified Universal Buffer (MUB) at pH 2 and 200 microl of a 0.1 M ABTS solution. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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