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Plant Foods for Human Nutrition

, Volume 61, Issue 3, pp 145–150 | Cite as

Effect of Cultivar, Year Grown, and Cropping System on the Content of Tocopherols and Tocotrienols in Grains of Hulled and Hulless Barley

  • J. Ehrenbergerová
  • N. Belcrediová
  • J. Prýma
  • K. Vaculová
  • C. W. Newman
Article

Abstract

In a three-year period (2000–2002) total tocols (tocopherols and tocotrienols), content of vitamin E and its isomers (α-, β+γ-, δ-tocopherols and tocotrienols) were assessed in grain of 13 barley genotypes. The highest content of tocols (60.3–67.6 mg kg−1) and content of vitamin E (Vitamin E equivalent—18.0–20.1 mg kg−1) were determined in the waxy varieties Wanubet, Wabet, and Washonubet. Standard varieties, i.e. of a malting type (Krona and Kompakt), had statistically significantly lower content of tocols (49.9 and 53.6 mg kg−1) and vitamin E (15.7–16.1 mg kg−1) compared to the waxy varieties. The hulless waxy variety Washonubet had statistically significantly higher total content of tocols (67.6 mg kg−1) and α- tocotrienols isomer (42.1 mg kg−1) versus all other genotypes in the set. Chemical treatment and fertilization statistically significantly increased the content of tocols (by 4.7 mg kg−1), vitamin E (by 1.9 mg kg−1), isomer α-tocopherol (by 0.9 mg kg−1) and isomer α- tocotrienols (by 3.3 mg kg−1). The average values of α-tocopherols and α-tocotrienols in the set were 6.7 mg kg−1 and 29.7 mg kg−1, respectively. Some of the reciprocal lines created by us from the malting and waxy varieties are suitable for food use for high contents of all tocopherols and α-tocotrienols.

Key words:

Spring barley Waxy barley Tocopherols Tocotrienols Cropping system 

Abbreviations:

Ko =

Kompakt

Kr =

Krona

T =

Tocophefol

T3 =

Tocotrienols

VEeq =

Vitamin E equivalent

Wb =

Wabet

Wnb =

Wanubet

Wsnb =

Washonubet

WTG =

weight of a thousand grains

Notes

Acknowledgements

The authors acknowledge financial support by the Ministry of Educations, Youth and Sports of the Czech Republic, Project RC No. 1M0570 and by the Grant Agency of the Czech Republic, Project No. 525/05/0781.

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Copyright information

© Springer Science+Business Media, Inc 2006

Authors and Affiliations

  • J. Ehrenbergerová
    • 1
  • N. Belcrediová
    • 1
  • J. Prýma
    • 2
  • K. Vaculová
    • 3
  • C. W. Newman
    • 4
  1. 1.Mendel University of Agriculture and ForestryBrnoCzech Republic
  2. 2.Research Institute of Brewing and MaltingPLC, Malting InstituteBrnoCzech Republic
  3. 3.Agricultural Research InstituteKroměříž, Ltd.KroměřížCzech Republic
  4. 4.Montana State UniversityBozemanUSA

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