Abstract
The aim of the present work was to develop and evaluate
near-infrared (NIR) and fluorescence spectroscopies as
rapid and potential online methods for determination of
the amount of aleurone in pearling dust fractions of
barley. Phytic acid was used as a marker for the aleurone
layer. Different varieties of barley were pearled, and
dust fractions were progressively taken out. Sample
concentration of phytic acid varied in the range of
0.5-4.1 g/100 g, and highest concentrations were obtained
in dust fractions for pearling degrees in the range of
15-25%. Regression models for phytic acid were developed
with the same high correlations for NIR and fluorescence
spectroscopies (R2 = 0.96) and prediction errors of
±0.16-0.18 g/100 g. The models performed well on a test
set of pearling fractions from two other barley
varieties. The techniques are rapid and nondestructive,
which means that they can be used online in connection
with industrial pearling systems.
| Original language | English |
|---|---|
| Pages (from-to) | 1813-1821 |
| Journal | Journal of Agricultural and Food Chemistry |
| Volume | 65 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 1 Mar 2017 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- aleurone
- barley
- fluorescence
- NIR
- pearling
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