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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The utilization and performance of carbohydrate-based fat replacers in southern-style baking powder biscuits

Charles, Stacey A. 04 May 2010 (has links)
Performance of three carbohydrate-based fat replacers (pectin, gum, and oat fiber) in a southern-style baking powder biscuit was evaluated at substituted levels of 33%, 66%, and 100%. Objectives and sensory tests were conducted on all samples. Results were compared to the control for the determination of significant differences at (p<0.05). Overall objective test results suggested that there was an increase in the degree of expansion as the level of fat replacement increased. Significantly (p<0.05) softer crusts and crumbs were observed with the fat replaced variations. All fat-substituted biscuits had significantly (p<0.05) higher moisture contents. Upon 24 and 48 hours of storage, staling was observed in all variations with the 100% variations having the most staling. There was a significant (p<0.05) caloric reduction as the level of fat replacement increased. However, this was an over-estimation of the calories provided upon human utilization. Also, the Land and b values of the crust color significantly (p<0.05) decreased with fat sUbstitution. The QDA results indicated that the panelists observed the degree of browning, cell size, dryness, and tenderness significantly (p<0.05) decreased whereas, perceived cohesiveness significantly (p<0.05) increased as the level of fat replacement increased. Bitterness also increased as the fat replacement level increased. The general population with an Appalachian influence "moderately liked" the control and oat-based 33% and 66% variations which were selected on the basis of the QDA results. Overall, the fat substituted variations with the most desirable characteristics were the pectin and oat-based 33% biscuits. The 100% variations would be the most beneficial in caloric reduction, however, their attributes would not be representative of an "ideal" Southern-style baking powder biscuit. / Master of Science

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