Comparison of different types of NIR instruments in ability to measure β-glucan content in naked barley

J. Schmidt, S. Gergely, R. Schönlechner, H. Grausgruber, S. Tömösközi, A. Salgó, E. Berghofer

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Importance of β-glucan in human nutrition is mirrored in numerous approval applications registering β-glucan containing products as health beneficial products in accordance with forthcoming EU Health Claims Regulation. In comparison to other cereals, barley contains considerable amounts of β-glucan. Naked barley is of particular interest because it circumvents the costs and loss of beneficial substances related to dehusking. In this study, the potential of near-infrared spectroscopy as an accurate, fast and economic method of determination of -glucan in naked barley was appraised. Four βdifferent near-infrared instruments were used to analyze 107 barley samples, in both whole grain and milled form. Importantly, both black and purple pericarp samples, which are of additional nutritional interest due to high anthocyanin content, and waxy samples, which show an extraordinary high β-glucan content could be analyzed within the same calibration set as the normal samples. All tested dispersive near-infrared reflection instruments showed suitability for supervision of breeding experiments and β-glucan monitoring in food industries (R2 > 0.78). Common, industrially used near-infrared transmission instruments also provided reasonable results, although only suitable for rough selection according to β-glucan levels. On the other hand, the Fourier transform near-infrared reflection instrument was able to perform analytical analyses (R2 = 0.96-0.98).

Original languageEnglish
Pages (from-to)398-404
Number of pages7
JournalCereal Chemistry
Volume86
Issue number4
DOIs
Publication statusPublished - Jul 2009

Fingerprint

Glucans
glucans
Hordeum
barley
Infrared instruments
Health
Infrared radiation
sampling
Infrared transmission
health claims
Near infrared spectroscopy
Near-Infrared Spectroscopy
Anthocyanins
Food Industry
whole grain foods
human nutrition
near-infrared spectroscopy
Fourier Analysis
Nutrition
pericarp

ASJC Scopus subject areas

  • Food Science
  • Organic Chemistry

Cite this

Schmidt, J., Gergely, S., Schönlechner, R., Grausgruber, H., Tömösközi, S., Salgó, A., & Berghofer, E. (2009). Comparison of different types of NIR instruments in ability to measure β-glucan content in naked barley. Cereal Chemistry, 86(4), 398-404. https://doi.org/10.1094/CCHEM-86-4-0398

Comparison of different types of NIR instruments in ability to measure β-glucan content in naked barley. / Schmidt, J.; Gergely, S.; Schönlechner, R.; Grausgruber, H.; Tömösközi, S.; Salgó, A.; Berghofer, E.

In: Cereal Chemistry, Vol. 86, No. 4, 07.2009, p. 398-404.

Research output: Contribution to journalArticle

Schmidt, J, Gergely, S, Schönlechner, R, Grausgruber, H, Tömösközi, S, Salgó, A & Berghofer, E 2009, 'Comparison of different types of NIR instruments in ability to measure β-glucan content in naked barley', Cereal Chemistry, vol. 86, no. 4, pp. 398-404. https://doi.org/10.1094/CCHEM-86-4-0398
Schmidt, J. ; Gergely, S. ; Schönlechner, R. ; Grausgruber, H. ; Tömösközi, S. ; Salgó, A. ; Berghofer, E. / Comparison of different types of NIR instruments in ability to measure β-glucan content in naked barley. In: Cereal Chemistry. 2009 ; Vol. 86, No. 4. pp. 398-404.
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