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Measurement of dough specific volume in chemically leavened dough systems

Measurement of dough specific volume in chemically leavened dough systems,10.1016/j.jcs.2008.10.002,Journal of Cereal Science,Guillermo G. Bellido,Mar

Measurement of dough specific volume in chemically leavened dough systems   (Citations: 4)
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Gas production and gas retention properties of doughs are pivotal to the manufacture of bread of good quality, but these properties are rarely measured directly in fermenting dough due to a paucity of suitable instrumentation. A digital image analysis-based method was used to measure the dynamic specific volume (DSV) of various chemically leavened dough systems. Sodium bicarbonate (1.4–4.2g per 100g of flour) in combination with equivalent neutralizing amounts of the leavening acidulants glucono-delta-lactone, potassium acid tartrate, adipic acid or sodium acid pyrophosphate consistently increased the specific volume of bread dough so that void fractions in the dough spanned between 5 and 67% at ordinary fermentation temperatures. The relationship between the specific volume of dough at the end of fermentation and the actual gas evolved (measured independently) was essentially linear and was characterized by a slope that provided a good index of the actual gas-trapping properties of dough. Therefore, the use of the DSV technique in conjunction with chemical leaveners offers the possibility of obtaining quantitative, real time information on the gassing capacity of the leavening system and the gas-holding capacity of the dough.
Journal: Journal of Cereal Science - J CEREAL SCI , vol. 49, no. 2, pp. 212-218, 2009
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