TY - JOUR
T1 - Rheology of Okenia hypogaea starch dispersions in aqueous solution of DMSO
AU - Solorza-Feria, Javier
AU - Jimnez-Aparicio, Antonio
AU - Arenas-Ocampo, Martha Lucia
AU - Bello-Prez, Luis Arturo
PY - 2002/5
Y1 - 2002/5
N2 - The aim of this work was to study the rheological behavior of Okenia hypogea starch dispersions (OSD) in aqueous solution (90/10, v/v) of dimethyl sulfoxide (DMSO). Okenia starch dispersions with 3 and 7 % (w/v) total solids were prepared at 20 °C and rheological tests were undertaken at 20, 40 and 60 °C, using a shear rate controlled rotational viscometer. The data fitted better the power law than the Casson model. Flow curves and flow behavior index indicated shear-thinning behavior. All rheological parameters were affected by the solids concentration and the measurement temperature. As regards amylose and amylopectin content okenia starch is grouped among "ordinary" (non-waxy) starches. Overall, OSD behaved similarly to potato starch dispersions and corn starch dispersions used as controls.
AB - The aim of this work was to study the rheological behavior of Okenia hypogea starch dispersions (OSD) in aqueous solution (90/10, v/v) of dimethyl sulfoxide (DMSO). Okenia starch dispersions with 3 and 7 % (w/v) total solids were prepared at 20 °C and rheological tests were undertaken at 20, 40 and 60 °C, using a shear rate controlled rotational viscometer. The data fitted better the power law than the Casson model. Flow curves and flow behavior index indicated shear-thinning behavior. All rheological parameters were affected by the solids concentration and the measurement temperature. As regards amylose and amylopectin content okenia starch is grouped among "ordinary" (non-waxy) starches. Overall, OSD behaved similarly to potato starch dispersions and corn starch dispersions used as controls.
KW - Okenia
KW - Rheological properties
KW - Starch dispersions
UR - http://www.scopus.com/inward/record.url?scp=0036574854&partnerID=8YFLogxK
U2 - 10.1002/1521-379x(200205)54:5<198::aid-star198>3.0.co;2-%23
DO - 10.1002/1521-379x(200205)54:5<198::aid-star198>3.0.co;2-%23
M3 - Artículo
SN - 0038-9056
VL - 54
SP - 198
EP - 202
JO - Starch/Staerke
JF - Starch/Staerke
IS - 5
ER -