Influence of diurnal photosynthetic activity on the morphology, structure, and thermal properties of normal and waxy barley starch
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Influence of diurnal photosynthetic activity on the morphology, structure, and thermal properties of normal and waxy barley starch. / Goldstein, Avi; Annor, George; Vamadevan, Varatharajan; Tetlow, Ian J.; Kirkensgaard, Jacob Judas Kain; Mortensen, Kell; Blennow, Andreas; Hebelstrup, Kim; Bertoft, Eric.
In: International Journal of Biological Macromolecules, Vol. 98, 2017, p. 188-200.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Influence of diurnal photosynthetic activity on the morphology, structure, and thermal properties of normal and waxy barley starch
AU - Goldstein, Avi
AU - Annor, George
AU - Vamadevan, Varatharajan
AU - Tetlow, Ian J.
AU - Kirkensgaard, Jacob Judas Kain
AU - Mortensen, Kell
AU - Blennow, Andreas
AU - Hebelstrup, Kim
AU - Bertoft, Eric
N1 - Copyright © 2017 Elsevier B.V. All rights reserved.
PY - 2017
Y1 - 2017
N2 - This study investigated the influence of diurnal photosynthetic activity on the morphology, molecular composition, crystallinity, and gelatinization properties of normal barley starch (NBS) and waxy barley starch (WBS) granules from plants cultivated in a greenhouse under normal diurnal (16h light) or constant light photosynthetic conditions. Growth rings were observed in all starch samples regardless of lighting conditions. The size distribution of whole and debranched WBS analyzed by gel-permeation chromatography did not appear to be influenced by the different lighting regimes, however, a greater relative crystallinity measured by wide-angle X-ray scattering and greater crystalline quality as judged by differential scanning calorimetry was observed under the diurnal lighting regime. NBS cultivated under the diurnal photosynthetic lighting regime displayed lower amylose content (18.7%), and shorter amylose chains than its counterpart grown under constant light. Although the relative crystallinity of NBS was not influenced by lighting conditions, lower onset, peak, and completion gelatinization temperatures were observed in diurnally grown NBS compared to constant light conditions. It is concluded that normal barley starch is less influenced by the diurnal photosynthetic lighting regime than amylose-free barley starch suggesting a role of amylose to prevent structural disorder and increase starch granule robustness against environmental cues.
AB - This study investigated the influence of diurnal photosynthetic activity on the morphology, molecular composition, crystallinity, and gelatinization properties of normal barley starch (NBS) and waxy barley starch (WBS) granules from plants cultivated in a greenhouse under normal diurnal (16h light) or constant light photosynthetic conditions. Growth rings were observed in all starch samples regardless of lighting conditions. The size distribution of whole and debranched WBS analyzed by gel-permeation chromatography did not appear to be influenced by the different lighting regimes, however, a greater relative crystallinity measured by wide-angle X-ray scattering and greater crystalline quality as judged by differential scanning calorimetry was observed under the diurnal lighting regime. NBS cultivated under the diurnal photosynthetic lighting regime displayed lower amylose content (18.7%), and shorter amylose chains than its counterpart grown under constant light. Although the relative crystallinity of NBS was not influenced by lighting conditions, lower onset, peak, and completion gelatinization temperatures were observed in diurnally grown NBS compared to constant light conditions. It is concluded that normal barley starch is less influenced by the diurnal photosynthetic lighting regime than amylose-free barley starch suggesting a role of amylose to prevent structural disorder and increase starch granule robustness against environmental cues.
KW - Circadian Rhythm
KW - Hordeum
KW - Light
KW - Photosynthesis
KW - Plant Proteins
KW - Starch
KW - Temperature
KW - Waxes
KW - Journal Article
U2 - 10.1016/j.ijbiomac.2017.01.118
DO - 10.1016/j.ijbiomac.2017.01.118
M3 - Journal article
C2 - 28143743
VL - 98
SP - 188
EP - 200
JO - International Journal of Biological Macromolecules
JF - International Journal of Biological Macromolecules
SN - 0141-8130
ER -
ID: 180763312