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Mold Growth Activity

Flour tortillas have been a favorite bread item for spaceflight since 1985. The space shuttle galley does not have refrigeration for food storage; hence, all foods are stowed in locker trays at room temperature. Spoilage problems are encountered with commercial tortillas on spaceflight missions longer than seven days. A tortilla with a shelf life of six months was developed. Students can compare the growth of mold on tortillas and various types of bread. They can then graph the results. To download the .pdf document, click here.

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