Extensograph, Mehl Extensograph, Teig extensogra

extensograph, flour extensograph, dough extensograph Preparation 1. A 300-gram flour sample on a 14 percent moisture basis is combined with a salt solution and mixed in the farinograph to form a dough. 2. After the dough is rested for 5 minutes, it is mixed to maximum consistency (peak time). Analyses 1. A 150-gram sample of prepared dough is placed on the extensograph rounder and shaped into a ball. 2. The ball of dough is removed from the rounder and shaped into a cylinder. 3. The dough cylinder is placed into the extensograph dough cradle, secured with pins, and rested for 45 minutes in a controlled environment. 4. A hook is drawn through the dough, stretching it downwards until it breaks. 5. The extensograph records a curve on graph paper as the test is run. 6. The same dough is shaped and stretched two more times, at 90 minutes and at 135 minutes. Results • The extensograph determines the resistance and extensibility of a dough by measuring the force required to stretch the dough with a hook until it breaks. • Extensograph results include resistance to extension, extensibility, and area under the curve. • Resistance to extension is a measure of dough strength. A higher resistance to extension requires more force to stretch the dough. • Extensibility indicates the amount of elasticity in the dough and its ability to stretch without breaking. • Extensograph curves are described on pages 48. Why is this important? Results from the extensograph test are useful in determining the gluten strength and bread-making characteristics of flour. The effect of fermentation time and additives on dough performance can also be evaluated.