Journal
JOURNAL OF CEREAL SCIENCE
Volume 50, Issue 1, Pages 22-28Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jcs.2009.02.002
Keywords
Brown rice bread; Microstructure; Rheology; Protease
Categories
Funding
- Food Institutional Research Measure
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In this study, protease treatment of brown rice (BR) batters was investigated in order to evaluate its impact on the textural and baking properties of BR bread. The enzymatic treatment improved bread quality by significantly increasing specific volume (p < 0.05), while decreasing crumb hardness and chewiness (p < 0.05). Fundamental theology and viscometry of batters revealed that protein hydrolysis induced lower complex modulus and initial viscosity, while phase angle was unaffected. Flour pasting properties were also affected, with a significant decrease in paste viscosity and breakdown (p < 0.05). Protein analysis of batters revealed that the enzymatic treatment induced the release of low molecular weight proteins from macromolecular protein complexes. In conclusion, a lower resistance to deformation of batters during proofing and in the early stages of baking as well as the preserved batter elasticity and the increased paste stability positively affected the breadmaking performance. (C) 2009 Elsevier Ltd. All rights reserved
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