Evaluation of Wheat Flour Dough Rheological Properties by Magnesium Lactate Salt Addition

Abstract

The aim of this study was to assess the influence of the magnesium ions from lactate salt at the level of 100, 150 and 200 mg/100g addition on the rheological properties of the wheat flour dough of 550 type. For this purpose, the empirical dough rheological properties were investigated during mixing, pasting and fermentation process by using the Farinograph, Falling Number, Amylograph and Rheofermentometer devices. During mixing dough hydration capacity decreases with the increased level of magnesium ions addition whereas the dough stability and dough development time decreases at low levels of magnesium ions addition and increases at high levels. The temperature at peak viscosity, total CO2 volume production and the total volume of CO2 lost decreases with the increased level of magnesium addition. PCA analysis shows that the wheat flour with 100 mg and 150 mg /100g magnesium ions addition presents a similar behaviour slightly different to those with 200 mg /100g magnesium ions addition (P < 0.05).

Keywords

• fermentation process
• mixing
• pasting
• rheological properties
• white flour.