Genotypic and environmental variations in phenolic acid and avenanthramide content of Canadian oat (Avena sativa)

Lovemore Nkhata Malunga; Nancy Ames; Jennifer Mitchell Fetch; Thomas Netticadan; Sijo Joseph Thandapilly

doi:10.1016/j.foodchem.2022.132904

Genotypic and environmental variations in phenolic acid and avenanthramide content of Canadian oat (Avena sativa)

Food Chem. 2022 Sep 15:388:132904. doi: 10.1016/j.foodchem.2022.132904. Epub 2022 Apr 7.

Authors

Lovemore Nkhata Malunga¹, Nancy Ames², Jennifer Mitchell Fetch³, Thomas Netticadan⁴, Sijo Joseph Thandapilly¹

Affiliations

¹ Agriculture & Agri-Food Canada, 196 Innovation Drive, Winnipeg, Manitoba R3T 6C5, Canada; Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, 196 Innovation Drive, Winnipeg, Manitoba R3T 2N2, Canada; Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.
² Agriculture & Agri-Food Canada, 196 Innovation Drive, Winnipeg, Manitoba R3T 6C5, Canada; Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, 196 Innovation Drive, Winnipeg, Manitoba R3T 2N2, Canada; Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada. Electronic address: nancy.ames@agr.gc.ca.
³ Agriculture & Agri-Food Canada, Brandon Research Development Center, Brandon, Manitoba, Canada.
⁴ Agriculture & Agri-Food Canada, 196 Innovation Drive, Winnipeg, Manitoba R3T 6C5, Canada; Canadian Centre for Agri-Food Research in Health and Medicine, 351 Tache Avenue, Winnipeg, Manitoba R2H 2A6, Canada.

PMID: 35460963
DOI: 10.1016/j.foodchem.2022.132904

Abstract

Phenolic compounds (PC) in oat may possess health promoting properties. This study evaluated the effect of genotype, environment, and their interaction on the phenolic acid and avenanthramide (AVN) concentration in Canadian oat. Six cultivars were grown at eight locations across Canada in a randomised complete block design with three field replicates. Free PCs were extracted from oat groat flour and analysed using a UPLC-PDA system. The cumulative concentration of free PCs and AVN ranged from 58 to 350 and 9 to 244 µg/g, respectively. The effect of environment was significant (p < 0.0001) for the concentration of all PCs. Cultivar differences significantly influenced the concentration of all PCs but AVNs A and B. The growing location explained > 68% of the variation in the concentration of AVN. Thus understanding the genotypic and environmental triggers of individual PCs may help agronomists and breeders strategize in selecting and growing oat cultivars of interest.

Keywords: Avena sativa; Avenanthramide; Genotype by environment interaction; Oat; Phenolic compounds.

MeSH terms

Avena* / genetics
Canada
Genotype
Hydroxybenzoates
ortho-Aminobenzoates

Substances

Hydroxybenzoates
ortho-Aminobenzoates
avenanthramide-2C
phenolic acid