Nutraceutical Properties of Flour and Tortillas Made with an Ecological Nixtamalization Process

• Published in: Journal of food science 2013-10, Vol.78 (10), p.C1529-C1534
• Main Authors: Méndez, Lilia Irene Rodríguez, Cárdenas, Juan de Dios Figueroa, Gómez, Minerva Ramos, Lagunas, Lilia Leticia Méndez
• Format: Article
• Language: English
• Subjects: Anthocyanins - analysis; Antioxidants - analysis; Biological and medical sciences; Carbohydrates; Corn; Dietary Supplements - analysis; ecological nixtamalization; Ecology; Edible Grain - chemistry; Flour; Flour - analysis; Food Handling - methods; Food industries; Food science; Fundamental and applied biological sciences. Psychology; Genotype & phenotype; Glucose; Glucosides; Glucosides - analysis; Hydrogen-Ion Concentration; Maize; maize flour; maize tortilla; Numerical control; nutraceutical properties; Nutraceuticals; Polyphenols; Proteins; Waste water; Zea mays - chemistry
• ISSN: 0022-1147; 1750-3841
• DOI: 10.1111/1750-3841.12241

The traditional nixtamalization (TN) process, used for obtaining maize‐based products, negatively affects bioactive compounds because of its highly alkaline pH. Recently, an ecological nixtamalization (EN) process has been developed that retains the pericarp and maintains the nejayote (wastewater) within the acidic‐neutral range. This study examines the effect of pH on the nutraceutical compounds (NC) of maize, such as polyphenolics and anthocyanins (ANT), as well as the effect on the antioxidant capacity (AC). The highest concentration of total phenolics (TP) in the maize kernel was found in the black and yellow genotypes, the highest concentration of ANT in the black genotypes, and the highest concentration of AC in the red and white genotypes. In the flour, TP levels were between 206 to 400 mg GA/100 g, ANT levels were 141 to 4107 mg cyanidin‐3 glucoside/kg, and AC levels were 2544 to 3001 mg AA/kg. In tortillas, TP levels were 255 to 319 mg GA/100 g, ANT levels were 32 to 3420 mg cyanidin‐3 glucoside/kg, and AC levels were from 1513 to 2695 mg AA/kg. The reduced loss of soluble solids, the pH, and the formation of compounds with proteins and carbohydrates from the EN process positively affected NC retention. Practical Application Ecological nixtamalization can replace traditional nixtamalization, the process demonstrates the ability to retain nutraceutical compounds that are beneficial to health.