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Full-Text Articles in Life Sciences
Factors Affecting Folic Acid Stability In Micronutrient Fortified Corn Tortillas, Jordan S. Chapman
Factors Affecting Folic Acid Stability In Micronutrient Fortified Corn Tortillas, Jordan S. Chapman
Theses and Dissertations
Folate degradation in micronutrient fortified corn masa and tortillas was evaluated using masa prepared from either nixtamalized corn flour or fresh nixtamal. A laboratory evaluation of the effects of pH, iron, and holding time at elevated temperature on folate loss in corn flour masa failed to show significant differences in any variable-treatment combination. An additional study was conducted at a commercial tortilla mill in Guadalajara, Mexico using masa prepared from fresh nixtamal. Commercial nixtamal was fortified with one of two different micronutrient premixes, containing iron, zinc, riboflavin, thiamin, niacin and either unencapsulated or lipid-encapsulated folic acid. A batch of each …
Optimization Of A Convective Air Flow Solar Food Dryer, Jonathan K. Russon, Michael L. Dunn, Frost M. Steele
Optimization Of A Convective Air Flow Solar Food Dryer, Jonathan K. Russon, Michael L. Dunn, Frost M. Steele
Faculty Publications
A solar food dryer, previously developed for personal and small community use, was the object of this optimization study. Based on previous research of convective solar food dehydrators, several dryer parameters were identified for this study. Chimney height and dryer product load were two factors tested in a central composite experimental design. Dryer product load was found to produce a maximum efficiency of the dryer when fifteen product-filled trays were inserted in the dryer. Maximum efficiency was observed at the maximum chimney height tested. Post-optimization configuration compared with pre-optimization configuration resulted in a 40% increase in final dry product production …