Changes of Isoflavones during the Growth Cycle of Lupinus albus

The objective of this study was to monitor the changes in isoflavone content in different plant organs (leaves, stems, roots) during the crop growth stage of three cultivars of Lupinus albus (white lupin) under field conditions, taking into account sowing time effects (autumn and early spring) and c...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2008-06, Vol.56 (12), p.4450-4456
Main Authors: D’Agostina, Alessandra, Boschin, Giovanna, Resta, Donatella, Annicchiarico, Paolo, Arnoldi, Anna
Format: Article
Language:English
Subjects:
Bioactive Constituents
Biological and medical sciences
chemical constituents of plants
cultivars
developmental stages
field crops
flavonoids
Flavonoids - analysis
Food industries
forage crops
forage legumes
Fundamental and applied biological sciences. Psychology
genetic variation
genistein
hydroxyl isoflavone
isoflavones
Isoflavones - analysis
LC-ESI-MS
leaves
legumes
Lupinus - chemistry
Lupinus - growth & development
Lupinus albus
plant development
Plant Leaves - chemistry
Plant Roots
Plant Stems - chemistry
prenyl isoflavone
roots
Seasons
stems
temporal variation
White lupin
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Summary:The objective of this study was to monitor the changes in isoflavone content in different plant organs (leaves, stems, roots) during the crop growth stage of three cultivars of Lupinus albus (white lupin) under field conditions, taking into account sowing time effects (autumn and early spring) and cultivar effects. Three sampling dates (from late vegetative to late grain growth stages) were evaluated. Seven isoflavones and four flavonoids were identified by LC-ESI-MS analysis. The isoflavone content was higher in leaves than in stems, and it was highest before flowering, whereas it decreased during maturity. Autumn-sown plants showed higher isoflavone content than early spring-sown plants, especially in late vegetative and early reproductive stages. Genistein 7-O-glucoside was the main isoflavone of leaves and stems in the late vegetative stages of early spring sowing, whereas genistein was the main isoflavone under autumn sowing. Variation among cultivars affected only marginally the total isoflavone content. No isoflavones were detected in seeds.
ISSN:0021-8561
1520-5118
DOI:10.1021/jf8003724