Type of Document Dissertation Author Long, Kristine A. URN etd-10122005-134432 Title Acceptance of bread with partial replacement of wheat bread flour by potato products in selected regions of the USSR and USA Degree PhD Department Human Nutrition and Foods Advisory Committee
Advisor Name Title Johnson, Janet M. Committee Chair Barton, Jo Anne Committee Member Lambur, Michael T. Committee Member Lovingood, Rebecca P. Committee Member Prehm, Marilyn S. Committee Member Keywords
- Potato industry
- Flour as food
Date of Defense 1991-08-15 Availability restricted Abstract
The purpose of this research was to incorporate a potato product into bread as a partial replacement for wheat flour and to describe a collaborative process for the development of bread products in three Soviet communities. Six potato flake breads and six cooked-mashed potato breads, with and without added gluten, were evaluated in a pilot study. Consumer acceptance scores indicated no significant differences among the twelve bread products. Four bread products, 29% and 45% cooked-mashed potato breads without added gluten, 15% potato flake bread with added gluten, and a 100% wheat flour bread, were selected for objective measurements, descriptive sensory evaluation, and central location acceptance testing.
The four breads were not significantly different in the objective measurements of standing height, percent protein and amino acid content The three potato breads had the highest moisture percent loss on day 1. Texture analysis indicated the 45% bread had the highest texture measurements from the day of baking through day 4. The control "rapid" bread had the lowest analysis of freshness measurements. Staling, as measured by differential scanning calorimetry, indicated the potato breads had significantly reduced staling rates when compared to 100% wheat flour bread.
Eleven trained panelists judged ten characteristics of the control and potato breads. The panelists perceived the potato breads to be more moist than the control. The other sensory characteristics of the control and potato breads were judged as similar.
Central location acceptance testing in Alaska and the Soviet Far East indicated that the potato breads were acceptable and consumers indicated they would buy the breads if they were available. Across all locations the locally purchased control bread was liked significantly less than the potato breads.
A collaborative process was designed for development of food products in Soviet and Alaskan communities.
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