Utilization of a fat substitute (100% replacement) with and without added fungal protease, fungal amylase, and bacterial amylase in a muffin was compared to a full fat counterpart. The enzymes were evaluated independently and in combination with each other. Physical and sensory data were reported with a p<0.05 significance level.
The physical tests indicated that there were no significant differences (p>0.05) among any of the variations in volume, water activity (freshly baked, and after 24 and 48 hours storage), crumb L values and crust Land b values. The full fat muffin (control) was significantly (p<0.05) more tender than all formulations. In addition, the control had a significantly (p<0.05) lower moisture content and a significantly (p<0.05) more yellow crumb color than all the other variations. The 100% fat substituted muffins with enzymes, generally, had lower moisture contents, lower volumes, decreased staling rates, and an increased crumb tenderness when compared to the 100% fat substituted muffin without any enzymes. The 100% fat substituted muffins containing bacterial amylase or fungal protease alone had a significantly (p<0.05) lower staling rate than a 100% fat substituted muffin with a combination of bacterial amylase and fungal protease. / Master of Science
| Identifer | oai:union.ndltd.org:VTETD/oai:vtechworks.lib.vt.edu:10919/43196 |
| Date | 11 June 2009 |
| Creators | Canterella, Robin L. |
| Contributors | Human Nutrition and Foods, Conforti, Frank D., Johnson, Janet M., Young, Roderick W. |
| Publisher | Virginia Tech |
| Source Sets | Virginia Tech Theses and Dissertation |
| Language | English |
| Detected Language | English |
| Type | Thesis, Text |
| Format | ix, 135 leaves, BTD, application/pdf, application/pdf |
| Rights | In Copyright, http://rightsstatements.org/vocab/InC/1.0/ |
| Relation | OCLC# 34306445, LD5655.V855_1995.C369.pdf |
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