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Published on: June 16, 2018
Bread breakdown pathways during mastication: impact of wheat bran fortification
Suyun Lin1,2,3, Xiaoxuan Jin1,3, Jing Gao1,3
1Department of Food Science and Technology, National University of Singapore, 2 Science Drive 2, Singapore 117542, Singapore. weibiao@nus.edu.sg.
Abstract:
The aim of this study was to investigate the impact of wheat bran fortification on the mastication process of bread. White wheat bread (WB) and bran-fortified wheat bread (BB) were consumed by eighteen panellists. The bolus was collected at four different mastication stages and characterized by properties of hydration, particle size, and texture. The results showed that there was no difference between the two bread samples in terms of swallowable bolus moisture. BB with a harder and denser texture produced more small particles and had a slightly shorter chewing time than WB during mastication. Moreover, bolus heterogeneity (D75/D25) indicated a distinct difference among mastication stages and revealed different disintegration pathways between the two samples: BB bolus exhibited a monotonous particle size reduction during mastication with reducing D50 and D75/D25; whereas, WB displayed a combination pattern of disintegration and agglomeration featuring relatively steady D50 and fluctuating D75/D25. It was concluded that bran fortification changed the bread breakdown pathways in terms of bread disintegration and bolus formation during the mastication process. This information offers new guidelines for fortifying innovative materials to manufacture foods specifically targeted for health.
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