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Title: Modeling of the effect of relative humidity and temperature on proving rate of rice-flour-based dough
Authors: Therdthai, N.
Zhou, W. 
Jangchud, K.
Keywords: Dough
Kinetic model
Relative humidity
Issue Date: Aug-2007
Citation: Therdthai, N., Zhou, W., Jangchud, K. (2007-08). Modeling of the effect of relative humidity and temperature on proving rate of rice-flour-based dough. LWT - Food Science and Technology 40 (6) : 1036-1040. ScholarBank@NUS Repository.
Abstract: Proving is one of the key processes in bread making, where dough normally rests and grows under an environment of constant temperature and humidity. To better understand the effect of relative humidity (RH) and temperature on the kinetics of dough expansion during proving and be able to optimize the growth rate, rice-flour-based dough of same formulation was proved under various process conditions. Both RH and temperature showed significant effect on the dough expansion rate during proving. To describe the dough expansion, a first-order, non-Arrhenius kinetic model was developed. The influence of RH and temperature on the kinetic rate was described by an empirical model. Through verification, the model performance was proved to be reasonably good. The model was subsequently used to optimize the proving condition to maximize the kinetic rate constant therefore minimizing the proving time. The fastest proving condition for the rice-flour-based dough in this research was at 90% RH and 46.3 °C. According to the model, the kinetic rate constant under the optimal condition was estimated to be at 0.217 min-1. From an initial height of 5 mm, the dough height could be increased to 11 mm within 6.4 min. © 2006 Swiss Society of Food Science and Technology.
Source Title: LWT - Food Science and Technology
ISSN: 00236438
DOI: 10.1016/j.lwt.2006.06.002
Appears in Collections:Staff Publications

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