Nutrient composition, starch microstructure and thermal properties, and in vitro availability of selected minerals of nixtamalized Philippine quality protein maize variety IPB Var 6 and the production of healthy loaf bread using nixtamalized corn–wheat flour blends
2022
De Leon, Deborah Christine A. | Bonto, Aldrin P. | Tuaño, Arvin Paul P. | Juanico, Clarissa B.
Corn is one of the most important food crops globally providing at least 30% of the food calories in developing countries. This study aimed to determine the nutritional content and starch properties of nixtamalized Philippine quality protein maize (QPM) variety and its potential as a flour substitute in loaf bread production. The nixtamalized Philippine QPM flour had a significant increase in moisture and calcium contents. In vitro availability of calcium, iron, and zinc was relatively lower and associated with phytate content. The developed loaf bread utilizing the optimum nixtamalized corn–wheat flour blend had improved nutritional value and had no significant difference in sensory characteristics compared with the control loaf bread made from wheat flour. The use of nixtamalized IPB Var 6 flour as an ingredient in loaf bread making improved its crude fiber, calcium, and iron levels and can be a nutritious potential substitute ingredient for baked products. NOVELTY IMPACT STATEMENT: The process of nixtamalization can improve the nutritional content of corn and has the potential to improve the quality of a food staple such as loaf bread. Incorporating nixtamalized QPM flour into loaf bread resulted in increased fiber, protein, and calcium contents, and it was also acceptable to the consumers in terms of sensory characteristics and general acceptability. Data on the nutritional content and availability of selected minerals of nixtamalized QPM flour can be used as basis for future researches to optimize the method to maximize its potential effects in the improvement of the nutritional value of QPM, thereby providing a healthier alternative staple for the consumers.
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