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 545113
Title Mass spectrometric characterisation of avenanthramides and enhancing their production by germination of oat (Avena sativa)
Author(s) Bruijn, Wouter J.C. de; Dinteren, Sarah van; Gruppen, Harry; Vincken, Jean Paul
Source Food Chemistry 277 (2019). - ISSN 0308-8146 - p. 682 - 690.
DOI https://doi.org/10.1016/j.foodchem.2018.11.013
Department(s) Food Chemistry
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Avena sativa - Avenanthramides - Cereal grain - Germination - LC-MS - Phytoalexin - Plant defence - Poaceae
Abstract

Avenanthramides are amides, with a phenylalkenoic acid (PA) and an anthranilic acid (AA) subunit, which are secondary metabolites of oat. Oat seeds were germinated, extracted, and the avenanthramides analysed by a combination of UHPLC with ion trap and high resolution ESI-MS. Typical fragmentation pathways with corresponding diagnostic fragments belonging to the PA and AA subunits were identified and summarised in a decision guideline. Based on these findings 28 unique avenanthramides were annotated in the oat seed(ling) extracts, including the new avenanthramide 6f (with a 4/5-methoxy AA subunit). Avenanthramide content increased by 25 times from seed to seedling. Avenanthramides 2p, 2c, and 2f, which are commonly described as the major avenanthramides, represented less than 20% of the total content in the seedlings. Future quantitative analyses should, therefore, include a wider range of avenanthramides to avoid underestimation of the total avenanthramide content.

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