Nixtamalized maize supplementation with a sardine protein concentrate to improve the biological value of tortillas
Por:
Lopez-Alarcon, Mardia, Montalvo-Velarde, Irene, Bernal-Gracida, Lilia, de Lourdes Barbosa-Cortes, Maria
Publicada:
1 may 2018
Categoría:
Medicine (miscellaneous)
Resumen:
Introduction: Most part of the rural population in Mexico obtains almost
half its energy from corn tortilla, and its sources of protein are
mainly of vegetal origin. Objective: To obtain a concentrate of sardine
protein (SP) to supplement corn flour, and to identify which
concentration provides corn tortillas with a better biological value,
without modifying its physical and sensorial characteristics. Method:
Obtainment of the SP concentrate, preparation of tortillas with corn
flour and different SP concentrations, assessment of tortillas physical
and sensorial characteristics by untrained panelists, assessment of
biological quality in a murine model (growth and protein efficiency
ratio [PER]). Parametric statistics was used. Results: A protein
concentrate of 70.48 g/100 g was obtained. Smoothness, blistering,
foldability and quality of the tortillas prepared with mixtures
containing 0.63-3.75% of SP were comparable to those of tortillas
prepared with non-supplemented flour. The growth of rats fed
supplemented tortillas was superior, the difference was significant with
>= 3.75% concentrations (p < 0.05). The PER of tortillas with 3.75% of
SP was 2.41, which was comparable to that of the reference protein
(casein). Conclusion: SP-supplemented corn flour at a 96.25:3.75% ratio
improves the biological value of tortillas without modifying their
physical and sensorial characteristics.
Filiaciones:
Lopez-Alarcon, Mardia:
Inst Mexicano Seguro Social, Hosp Pediat, Ctr Med Nacl Siglo 21, Ciudad De Mexico, Mexico
Montalvo-Velarde, Irene:
Univ La Salle, Fac Quim, Ciudad De Mexico, Mexico
Bernal-Gracida, Lilia:
Univ Nacl Autonoma Mexico, Fac Ciencias Quim, Dept Bioquim, Ciudad De Mexico, Mexico
de Lourdes Barbosa-Cortes, Maria:
Inst Mexicano Seguro Social, Hosp Pediat, Ctr Med Nacl Siglo 21, Ciudad De Mexico, Mexico
|