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KMID : 0380619870190030239
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Korean Journal of Food Science and Technology
1987 Volume.19 No. 3 p.239 ~ p.244
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Effect of Phosphate on Rheological Properties of Rice Starch Suspension .
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Abstract
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Rheological properties of 5% starch suspension were investigated using a capillarity tube viscometer. Nonglutinous and glutinous rice starch suspensions at 30-60℃, and 30-55℃, respectively, had no yield stress and showed dilatant flow behavior in the absence or presence of phosphate. However, flow behavior of nonglutinuous starches at 65℃ and glutinous starch at 60℃ was pseudopalastic. Flow activation energies for rice starch suspensions were 0.88-1.45 ㎉/mole at 30-50℃ and about 45-73 ㎉/mole 60-65℃. Flow activation energy in the presence of phosphate was 90-182 ㎉/mole at 60-65℃. Akibare starch had the highest activation energy, and glutinous starch the lowest.
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