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The objectives of this research were to study the effects of slurry specific gravity, starch table slope, slurry pumping rate, and their interactions on starch recovery and purity; and to propose a small-scale laboratory wet-milling procedure for wheat. First-order and second-order response surface regression models were developed to study the effects and interactions of slurry specific gravity, starch table slope, and slurry pumping rate on starch and gluten separation for a 100-g wheat wet-milling procedure. The starch and starch protein content data fit the first-order models (R2 = 0.99 and 0.96) better than the second-order models (R2 = 0.98 and 0.93). Regression results from the first-order models indicated that specific gravity, table slope, pumping rate, and their interactions all had a significant effect on starch yield and purity. However, these effects could be simplified as the effect of the resident time of starch and gluten slurry on the starch table and the specific gravity. Starch ... |
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