Impact of Wheat Bran Hydration Properties As Affected by Toasting and Degree of Milling on Optimal Dough Development in Bread Making.
The impact of the hydration capacity and hydration rate of wheat bran on optimal bread dough development and loaf volume was investigated using coarse bran, both native as well as after toasting, milling, presoaking, and combinations of the latter. It was found that toasting reduces bran's hydration rate, which, during mixing, results in a temporary excess of water in which dough development takes place inefficiently and hence requires additional time. This mechanism was further substantiated by the observation that delayed dough development can be counteracted by the presoaking of bran. Milling of bran increases its hydration rate and results in faster optimal dough development. Presoaking of nonmilled bran, however, did not result in faster dough development. Smaller bran particles do lead to faster dough development, probably due to increased proper contacts between flour particles. Optimal loaf volumes did not change upon milling and toasting.
Laboratory of Food Chemistry and Biochemistry, Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven , Kasteelpark Arenberg 20, Box 2463, 3001 Leuven, Belgium.
Pieter J
PJ
Jacobs
Provincial Control Unit Antwerp - Sector Transformation, Federal Agency for the Safety of the Food Chain , Italiëlei 4 - bus 18, 2000 Antwerpen, Belgium.
Silke
S
Bogaerts
Laboratory of Food Chemistry and Biochemistry, Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven , Kasteelpark Arenberg 20, Box 2463, 3001 Leuven, Belgium.
Sami
S
Hemdane
Laboratory of Food Chemistry and Biochemistry, Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven , Kasteelpark Arenberg 20, Box 2463, 3001 Leuven, Belgium.
Jan A
JA
Delcour
Laboratory of Food Chemistry and Biochemistry, Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven , Kasteelpark Arenberg 20, Box 2463, 3001 Leuven, Belgium.
Christophe M
CM
Courtin
D001939:Bread / Q000032:analysis*; D004043:Dietary Fiber / Q000032:analysis*; D005433:Flour / Q000032:analysis; D005511:Food Handling / Q000379:methods*; D014908:Triticum / Q000737:chemistry*; D014867:Water / Q000032:analysis*
D004043:Dietary Fiber; D014867:Water
bread making; dough development; heat stabilization; hydration capacity; hydration kinetics; loaf volume; particle size reduction; prehydration; wheat bran