Diversity of avenanthramide content in wild and cultivated oats
https://doi.org/10.30901/2227-8834-2020-1-30-47
Abstract
Background. Oat grains accumulate substantial amounts of various phenolic compounds that possess biological activity and have a potential to considerably increase health benefits of oats as a food. Avenanthramides (AVA) is an important group of these compounds due to their antioxidant, anti-itching, anti-inflammatory, antiproliferative activities.
Materials and methods. Using combined HPLC and LC-MS analyses, we provide the first comprehensive review of the total avenanthramide content and composition in cultivated and wild oats. The AVA content was measured in 32 wild and 120 cultivated oat accessions obtained from the global collection of the N.I. Vavilov Institute of Plant Genetic Resources (VIR), St. Petersburg, Russia.
Results and conclusion. The wild hexaploid A. sterilis L. had the highest total AVA content, reaching 1825 mg kg–1. Among cultivated accessions, naked oat cv. ‘Numbat’ (Australia) had the highest AVA content, 586 mg kg–1. The AVA composition exhibited a wide diversity among the analyzed samples. Accessions were identified where AVAs A, B and C, which are generally considered as major AVA, had a low percentage, and instead other AVAs prevailed. The AVA content in eight oat cultivars revealed significant annual changes in both the total AVA content and the proportions of individual AVAs. Using HPLC analyses, 22 distinguishable peaks in AVA extracts of oat seeds were detected and quantified. Several of these peaks, which have not been previously documented, presumably represent different AVAs. Further analyses are needed to detail these findings and to determine the specific AVA structures in oat grains.
Supporting agencies: The study was supported by a STINT project entitled Improving Oat Oil Quality and Its Resistance to Pathogens (Sweden). Plant material from the VIR collection for this study was provided as part of the project No. 0662-2019-0006 (Russian Federation).
About the Authors
S. Leonova
Lund University
Sweden
Box 124, S-22100 Lund
Sweden
Box 124, S-22100 Lund
A. Gnutikov
N.I. Vavilov All-Russian Institute of Plant Genetic Resources
Russian Federation
42, 44 Bolshaya Morskaya Street, St. Petersburg 190000
Russian Federation
42, 44 Bolshaya Morskaya Street, St. Petersburg 190000
I. Loskutov
N.I. Vavilov All-Russian Institute of Plant Genetic Resources
Russian Federation
42, 44 Bolshaya Morskaya Street, St. Petersburg 190000
Russian Federation
42, 44 Bolshaya Morskaya Street, St. Petersburg 190000
E. Blinova
N.I. Vavilov All-Russian Institute of Plant Genetic Resources
Russian Federation
42, 44 Bolshaya Morskaya Street, St. Petersburg 190000
Russian Federation
42, 44 Bolshaya Morskaya Street, St. Petersburg 190000
K.-E. Gustafsson
Swedish University of Agricultural Sciences
Sweden
Sundsvägen 10, 23053 Alnarp
Sweden
Sundsvägen 10, 23053 Alnarp
O. Olsson
Lund University; CropTailor AB, Lund University
Sweden
Box 124, S-22100 Lund
Sweden
Box 124, S-22100 Lund
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Review
For citations:
Leonova S., Gnutikov A., Loskutov I., Blinova E., Gustafsson K., Olsson O. Diversity of avenanthramide content in wild and cultivated oats. Proceedings on applied botany, genetics and breeding. 2020;181(1):30-47. https://doi.org/10.30901/2227-8834-2020-1-30-47
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