Abstract
A new viscosity equation for the description of the viscosity of concentrated aqueous starch pastes is proposed: eta(app) = Ke([Bmstarch+(C/T)-DW+(n-1)ln gamma]) with: m(starch) = mass fraction starch in paste, T = temperature, W = amount of work performed on the starch, n = power-law index, K = 3.063 x 10(-4) Pas, B = 12.03 [-], C = 4.134 x 10(3) K-1, D = 2.83 x 10(-2) kg dry starch/kJ, and n = 0.494.
The relation describes experimental results of viscosity measurements of potato starch both in a Couette viscometer and in a static mixer for: 0.2 less than or equal to m(starch) less than or equal to 0.35, 343 K less than or equal to T less than or equal to 363 K, 3.3kJ/kg dry starch less than or equal to W less than or equal to 29.74 kJ/kg dry starch, and 2.71 s(-1) less than or equal to gamma less than or equal to 10.84 s(-1).
| Original language | English |
|---|---|
| Pages (from-to) | 55-59 |
| Number of pages | 5 |
| Journal | Carbohydrate Polymers |
| Volume | 24 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1994 |