Examining the bubble structure and antioxidant activity of pea fibre-enriched bread using image and texture analysis, ultrasound analysis, and antioxidant assays

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dc.contributor.authorShum, Adrienne
dc.contributor.examiningcommitteeArntfield, Susan (Food Science) Aluko, Rotimi (Human Nutritional Sciences)en_US
dc.contributor.supervisorScanlon, Martin (Food Science)en_US
dc.date.accessioned2012-01-05T14:45:28Z
dc.date.available2012-01-05T14:45:28Z
dc.date.issued2012-01-05
dc.degree.disciplineFood Scienceen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractThe addition of pea fibre to wheat bread supports the growing trend of improving health through diet. Various evaluation tools (bread scoring, C-cell, texture profile analysis, and ultrasound) were used to monitor the sensory and mechanical quality of air bubbles in bread. Different pea fibre particle sizes (250, 125, 180, 90 μm) were added at 0, 2, 4, 6, 8 g/serving into a bread formulation. Improvements in specific loaf volume were observed when water absorption was optimized. Adequate water absorption mitigated the high dough viscosity effect of pea fibre. The 1,1-diphenyl-2-picrylhydrazyl (DPPH) scavenging assay was used to measure antioxidant activity of pea fibre. All particle sizes of pea fibres had substantially greater antioxidant scavenging ability compared to wheat flour. The DPPH scavenging activity of pea fibre approached that of ascorbic acid by the end of the assay. Fibre-enriched bread had higher antioxidant activity compared to that of the control bread.en_US
dc.description.noteFebruary 2012en_US
dc.identifier.urihttp://hdl.handle.net/1993/5028
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectfibreen_US
dc.subjectbreaden_US
dc.subjectDPPHen_US
dc.subjectultrasounden_US
dc.subjectC-cellen_US
dc.subjectpeaen_US
dc.titleExamining the bubble structure and antioxidant activity of pea fibre-enriched bread using image and texture analysis, ultrasound analysis, and antioxidant assaysen_US
dc.typemaster thesisen_US
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