TY - JOUR
T1 - Rapid and Nondestructive Determination of Aleurone Content in Pearling Fractions of Barley by Near-Infrared (NIR) and Fluorescence Spectroscopies
AU - Wold, Jans Petter
AU - Airado-Rodríguez, Diego
AU - Holtekjølen, Ann-Katrin
AU - Holopainen-Mantila, Ulla
AU - Sahlstrøm, Stefan
PY - 2017/3/1
Y1 - 2017/3/1
N2 - 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.
AB - 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.
KW - aleurone
KW - barley
KW - fluorescence
KW - NIR
KW - pearling
UR - http://www.scopus.com/inward/record.url?scp=85014274654&partnerID=8YFLogxK
U2 - 10.1021/acs.jafc.6b04954
DO - 10.1021/acs.jafc.6b04954
M3 - Article
SN - 0021-8561
VL - 65
SP - 1813
EP - 1821
JO - Journal of Agricultural and Food Chemistry
JF - Journal of Agricultural and Food Chemistry
IS - 8
ER -