TY - JOUR
T1 - Physicochemical, microstructural, and rheological characterization of tigernut (Cyperus esculentus) Starch
AU - Akonor, P. T.
AU - Tortoe, C.
AU - Oduro-Yeboah, C.
AU - Saka, E. A.
AU - Ewool, J.
N1 - Publisher Copyright:
© 2019 P. T. Akonor et al.
PY - 2019
Y1 - 2019
N2 - The aim of this study was to characterize the physicochemical properties of starch isolated from two varieties of tigernuts. The results showed wide variations between the two types of tigernuts. Mean granule sizes were 11.1 and 6.1 μm, respectively, for starch from the yellow and black while amylose content ranged from 19 to 21%. Starch gels from the yellow variety were more stable to freeze-thaw and recorded 37.1% syneresis, compared to 56.5% after the first storage cycle. Pasting properties were significantly different (p < 0.05) among starch from the two tigernut varieties, with black recording higher peak viscosity, lower breakdown, and higher setback viscosity. Gels made from the yellow variety were clearer, softer, more adhesive, and more cohesive. Both gels showed a pseudoplastic flow behavior without thixotropy.
AB - The aim of this study was to characterize the physicochemical properties of starch isolated from two varieties of tigernuts. The results showed wide variations between the two types of tigernuts. Mean granule sizes were 11.1 and 6.1 μm, respectively, for starch from the yellow and black while amylose content ranged from 19 to 21%. Starch gels from the yellow variety were more stable to freeze-thaw and recorded 37.1% syneresis, compared to 56.5% after the first storage cycle. Pasting properties were significantly different (p < 0.05) among starch from the two tigernut varieties, with black recording higher peak viscosity, lower breakdown, and higher setback viscosity. Gels made from the yellow variety were clearer, softer, more adhesive, and more cohesive. Both gels showed a pseudoplastic flow behavior without thixotropy.
UR - http://www.scopus.com/inward/record.url?scp=85067794982&partnerID=8YFLogxK
U2 - 10.1155/2019/3830651
DO - 10.1155/2019/3830651
M3 - Article
AN - SCOPUS:85067794982
SN - 2356-7015
VL - 2019
JO - International Journal of Food Science
JF - International Journal of Food Science
M1 - 3830651
ER -