TY - JOUR
T1 - Molecular structure of amylopectin from amaranth starch and its effect on physicochemical properties
AU - Kong, Xiangli
AU - Bertoft, Eric
AU - Bao, Jinsong
AU - Corke, Harold
PY - 2008/11/1
Y1 - 2008/11/1
N2 - The molecular structure of amylopectin and its φ{symbol},β-limit dextrins from starch of 13 amaranth cultivars was determined by HPAEC-PAD after debranching. Chain length profiles of amylopectins showed bimodal distributions. The molar-based ratios of the average chain lengths of amylopectins (CLap) ranged from 17.41 to 18.22. The molar-based average chain lengths (CLld) and average B-chain lengths (BCLld) of φ{symbol},β-limit dextrins varied from 7.68 to 8.05, and from 14.10 to 14.73, respectively. Correlation analysis indicated that most structural parameters were positively correlated with thermal properties with few exceptions, whereas the content of fraction fa′ ("′" stands for molar-based chain length ratio) was negatively correlated with the thermal properties. Pasting properties of cold paste viscosity (CPV) and setback were also correlated with amylopectin structural parameters.
AB - The molecular structure of amylopectin and its φ{symbol},β-limit dextrins from starch of 13 amaranth cultivars was determined by HPAEC-PAD after debranching. Chain length profiles of amylopectins showed bimodal distributions. The molar-based ratios of the average chain lengths of amylopectins (CLap) ranged from 17.41 to 18.22. The molar-based average chain lengths (CLld) and average B-chain lengths (BCLld) of φ{symbol},β-limit dextrins varied from 7.68 to 8.05, and from 14.10 to 14.73, respectively. Correlation analysis indicated that most structural parameters were positively correlated with thermal properties with few exceptions, whereas the content of fraction fa′ ("′" stands for molar-based chain length ratio) was negatively correlated with the thermal properties. Pasting properties of cold paste viscosity (CPV) and setback were also correlated with amylopectin structural parameters.
KW - Amylopectin structure
KW - Chain length distribution
KW - Limit dextrin
UR - http://www.scopus.com/inward/record.url?scp=52949142199&partnerID=8YFLogxK
U2 - 10.1016/j.ijbiomac.2008.07.018
DO - 10.1016/j.ijbiomac.2008.07.018
M3 - 文章
C2 - 18755216
AN - SCOPUS:52949142199
SN - 0141-8130
VL - 43
SP - 377
EP - 382
JO - International Journal of Biological Macromolecules
JF - International Journal of Biological Macromolecules
IS - 4
ER -