Determinación de lisina, triptófano y proteína en germinados de maíz criollo y QPM

Abstract

ResumenEl objetivo de la presente investigación fue determinar la lisina, triptófano, proteína y rendimiento de forraje verde en maíz QPM y criollo. El trabajo se realizó en el CINVESTAV e Instituto Tecnológico de Roque, Celaya, México, en el año 2014. Se evaluaron dos genotipos de maíz, uno de alto contenido de proteína (QPM) y otro normal. La producción de forraje verde se realizó de acuerdo al método de la FAO (2001). Se realizaron muestreos a los 9, 11, 13, 15, y 17 días después de la siembra y se tomaron como variables la altura de plántula, peso fresco, materia seca, lisina, triptófano, proteína y rendimiento de forraje. El rendimiento de forraje verde alcanzó sus valores más altos a los 17 días, el criollo 25.4 kg m -2 y QPM 27.14 kg m -2 . Para el contenido de lisina y triptófano el valor más alto se determinó a los 13 días en ambos genotipos, 0.55 y 1.17% y 1.18 y 0.56%, respectivamente. Asimismo, se concluye que la proteína del maíz QPM fue más alta a los 17 días con un valor de 19.86% y para el maíz criollo a los 15 días con 14.45%.Palabras claves: forraje, genotipo, maíz de alto contenido de proteína, rendimiento. AbstractThe objective of this research was to determine the lysine, tryptophan, protein and yield of green fodder in maize QPM and creole. The research was carried out at the CINVESTAV and Technological Institute of Roque, Celaya, México, in 2014. Two maize genotypes, one with high protein content (QPM) and a normal one, were evaluated. The production of green fodder was carried out according to the FAO method (2001). Samples were taken at 9, 11, 13, 15, and 17 days after sowing and seedling height, fresh weight, dry matter, lysine, tryptophan, protein and forage yield were taken as variables. The yield of green fodder reached its highest values at 17 days, creole 25.4 kg m -2 and QPM 27.14 kg m -2 . For the lysine and tryptophan content the highest value was determined at 13 days in both genotypes, 0.55 and 1.17% and 1.18 and 0.56%, respectively. It was also concluded that the QPM maize protein was higher at 17 days with a value of 19.86% and for creole maize at 15 days with 14.45%.

Improvement of nutritional quality of local dishes and their acceptance by children of different ages

“…The enriched tortilla was the most preferred dish among the children in the degustation tests and greater increases in the concentration of some amino acids were obtained. Amaranth and maize complement each other in the concentration of some amino acids [23,33], which increases the biological value of the protein. Histidine, methionine, isoleucine, glutamic acid and arginine increased considerably when adding amaranth flour; the first three are essential amino acids.…”

Increase of phytomass and protein in hydroponic green forage through fertilization in Casanare, Colombia

“…This will create a forage layer that includes leaves, stems, and roots, in which 20-30 cm tall plants will grow in an 8-12 days period (Resh, 2001). The harvest of the hydroponic forage must be carried out after 10-13 days (25.4 kg to 2714 kg m 2 ), because plants have a higher nutrient, lysine, and tryptophane content during this period (FAO, 2001 andGarcía et al, 2017). McDonald et al (1981) pointed out that, the more the HGF grow, the more the protein content decreases; however, this situation can be reversed applying nitrogen fertilizers.…”