[Acid- and neutro-detergent fiber and minor mineral contents in maize and its tortilla].

The present study was carried out to complete available information on the nutrient contents of corn tortilla particularly mineral elements and acid and neutro-detergent fiber. Results indicated that the tortilla weight should be considered in dietary surveys. Protein and ash contents are slightly higher in tortillas than in maize, in the first case due to carbohydrate losses that occur during the process, and in the case of ash, due to the lime used during the cooking process. The process also induces changes in the acid- and neutro-detergent fiber in maize. Similar yields related to the decrease of neutro-detergent and the increase of acid-detergent fiber were found in both products. The cell walls content decreases in the tortilla, with an increase in cellular content. With respect to minerals, an increase in calcium content was found, giving a better Ca:P balance, as well as increases in Fe, Cu and Zn.