Nitrification Inhibitors from the Roots of Leucaena leucocephala

The nitrification inhibition (NI) bioassay guided fractionation of the methanol extract of lyophilized and milled roots of Leuceana leucocephala resulted in the isolation of four compounds, 1–4, as confirmed from their 1H and 13C NMR spectral data. Compound 1, gallocatechin, was the most active NI i...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2000-12, Vol.48 (12), p.6174-6177
Main Authors: Erickson, Andrew J, Ramsewak, Russel S, Smucker, Alvin J, Nair, Muraleedharan G
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
Catechin - analogs & derivatives
Catechin - analysis
Economic plant physiology
Fabaceae - chemistry
Fundamental and applied biological sciences. Psychology
General agronomy. Plant production
Magnetic Resonance Spectroscopy
Nitrogen - antagonists & inhibitors
Nitrogen - metabolism
Nitrogen fertilization
Nitrogen metabolism and other ones (excepting carbon metabolism)
Nitrogen, phosphorus, potassium fertilizations
Nitrosomonas - metabolism
Nutrition. Photosynthesis. Respiration. Metabolism
Plants, Medicinal
Soil-plant relationships. Soil fertility. Fertilization. Amendments
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Summary:The nitrification inhibition (NI) bioassay guided fractionation of the methanol extract of lyophilized and milled roots of Leuceana leucocephala resulted in the isolation of four compounds, 1–4, as confirmed from their 1H and 13C NMR spectral data. Compound 1, gallocatechin, was the most active NI inhibitor at 12 μg/mL. Epigallocatechin, 2, and epicatechin, 4, isolated as mixtures, were not assayed individually for their NI inhibitory activities against the nitrification bacterium Nitrosomonas europaea. Keywords: Leuceana leucocephala; Nitrosomonas europaea; gallocatechin; epigallocatechin; catechin; epicatechin; nitrification inhibitors
ISSN:0021-8561
1520-5118
DOI:10.1021/jf991382z