Lipids and antioxidants in groats and hulls of Swedish oats (Avena sativa L)

Susanne Bryngelsson, Birgitta Mannerstedt-Fogelfors, Afaf Kamal-Eldin, Roger Andersson, Lena H. Dimberg

Research output: Contribution to journalArticlepeer-review

82 Citations (Scopus)

Abstract

Concentrations and compositions of total lipids (TL), fatty acids, tocopherols and tocotrienols, avenanthramides and free hydroxycinnamic acids were determined in groats and hulls from single samples of seven Swedish oat cultivars. Total antioxidant capacity (TAC) was measured using the radical 1,1-diphenyl-2-picrylhydrazyl as substrate. Results were evaluated by principal component analysis. Consistent differences in value of the variables analysed in groats and hulls were found, groats having higher concentrations of all compounds analysed except free cinnamic acids. Concentrations of E-vitamers (especially tocotrienols) were high in both groat and hull samples with high TL. Avenanthramides were high in hull samples with high TL, but this was not found in groats. Free cinnamic acids did not follow TL in either groats or hulls. TAC was generally higher in groats than in hulls. The within-group variation in TAC was less pronounced than that in chemical composition, especially in groats. The results did not suggest any strong relationship between TAC and individual antioxidants.

Original languageEnglish
Pages (from-to)606-614
Number of pages9
JournalJournal of the Science of Food and Agriculture
Volume82
Issue number6
DOIs
Publication statusPublished - May 1 2002
Externally publishedYes

Keywords

  • 1,1-diphenyl-2-picrylhydrazyl
  • Antioxidants
  • Avena sativa
  • Avenanthramides
  • Cinnamic acids
  • Fatty acids
  • Groats
  • Hulls
  • Lipids
  • Principal component analysis
  • Tocopherols
  • Tocotrienols
  • Total antioxidant capacity

ASJC Scopus subject areas

  • Biotechnology
  • Food Science
  • Agronomy and Crop Science
  • Nutrition and Dietetics

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