Degradation of biochanin A in soil |
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Authors: | S?ren Furbo Anne G Mortensen Bente Laursen Carsten Christophersen Inge S Fomsgaard |
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Institution: | (1) Department of Integrated Pest Management, Faculty of Agricultural Sciences, Aarhus University, Fors?gsvej 1, 4200 Slagelse, Denmark;(2) Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen ?, Denmark; |
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Abstract: | Degradation of biochanin A, 400 μg (1.41 μmol) per gram of dry soil, was studied and the initial degradation products, dihydrobiochanin
A, pratensein and genistein were identified and quantified. The maximum concentrations of these compounds were determined
as 166 pmol/g dry soil after 2 days of incubation, 175 pmol/g dry soil after 1 day and 1,236 pmol/g dry soil after 1 day,
respectively. Biochanin A and the initially formed products degrade too fast to be responsible for clover soil sickness (DT90 <20 days), but could be precursors for the responsible compounds. The immediate degradation products from biochanin A are
all biologically active and are the prime candidates for a reduction of weed pressure caused by clover. |
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