Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 496582
Title Compositional changes in (iso)flavonoids and estrogenic activity of three edible Lupinus species by germination and Rhizopus-elicitation
Author(s) Aisyah, Siti; Vincken, Jean Paul; Andini, Silvia; Mardiah, Zahara; Gruppen, Harry
Source Phytochemistry 122 (2016). - ISSN 0031-9422 - p. 65 - 75.
DOI http://dx.doi.org/10.1016/j.phytochem.2015.12.015
Department(s) Food Chemistry Group
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2016
Keyword(s) 2'-Hydroxygenistein - Deglycosylation - Fabaceae - Genistein - Lupinus albus - Lupinus angustifolius - Lupinus luteus - Mass spectrometry - Prenylation
Abstract

The effects of germination and elicitation on (iso)flavonoid composition of extracts from three edible lupine species (Lupinus luteus, Lupinus albus, Lupinus angustifolius) were determined by RP-UHPLC-MS. n The total (iso)flavonoid content of lupine increased over 10-fold upon germination, with the total content and composition of isoflavonoids more affected than those of flavonoids. Glycosylated isoflavones were the most predominant compounds found in lupine seedlings. Lesser amounts of isoflavone aglycones, including prenylated ones, were also accumulated. Elicitation with Rhizopus oryzae, in addition to germination, raised the content of isoflavonoids further: the total content of 2'-hydroxygenistein derivatives was increased considerably, without increasing that of genistein derivatives. Elicitation by fungus triggered prenylation of isoflavonoids, especially of the 2'-hydroxygenistein derivatives. The preferred positions of prenylation differed among the three lupine species. The change in isoflavone composition increased the agonistic activity of the extracts towards the human estrogen receptors, whereas no antagonistic activity was observed.

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