RESUMEN El presente trabajo estudió las isotermas de adsorción a 25 °C de harina de tres variedades de quinua (Chenopodium quinoa Willd.): INIA Salcedo (IS), Pasankalla Roja (PR) y Negra Collana (NC) sin maltear y malteada, así como su vida útil. Las isotermas fueron determinadas colocando 2g de muestra en un analizador de actividad de agua. Se programaron lecturas de 0.05 a 0.90 de actividad de agua, para construir las isotermas y la humedad inicial se determinó por el método gravimétrico. Los datos experimentales fueron ajustados con los modelos matemáticos de GAB, BET, Henderson, Halsey y Oswin. La bondad del ajuste se evaluó con el coeficiente de regresión y el porcentaje de error medio relativo (%E). Como resultado se verificó que el modelo de GAB y Oswin presentaron un buen ajuste de los datos experimentales con un coeficiente de correlación superior a 0.98 y un %E men...

The process of hydrolysis was carried out on a suspension of quinoa flour in water in a proportion of 1 in10 parts of water, previously gelatinized, to which was added an equivalent suspension of enzymes of 1,5 g/1000 g (50% of alpha amylase and 50% protease). With that, proteins were solubilized and starch was reduced to reducing su- gars, obtaining a liquid product at an average concentration of 8,5% that was later con- centrated to 45% of total solids. The hydrolysis process allows, on the basis of 1 kg of quinoa flour, toobtain80 to 85% of hydrolyzed material from20 to 15% of cellulosic residue, proteins and carbohydrates, non-digestible by the enzymes. The experiences that were carried out brought as results the following optimum values of kinetic parameters: Concentration of substrate: 10,0 %; Temperature: 60 ºC; pH: 5,0 and enzyme con- cent...

The process of hydrolysis was carried out on a suspension of quinoa flour in water in a proportion of 1 in10 parts of water, previously gelatinized, to which was added an equivalent suspension of enzymes of 1,5 g/1000 g (50% of alpha amylase and 50% protease). With that, proteins were solubilized and starch was reduced to reducing su- gars, obtaining a liquid product at an average concentration of 8,5% that was later con- centrated to 45% of total solids. The hydrolysis process allows, on the basis of 1 kg of quinoa flour, toobtain80 to 85% of hydrolyzed material from20 to 15% of cellulosic residue, proteins and carbohydrates, non-digestible by the enzymes. The experiences that were carried out brought as results the following optimum values of kinetic parameters: Concentration of substrate: 10,0 %; Temperature: 60 ºC; pH: 5,0 and enzyme con- cent...

The process of hydrolysis was carried out on a suspension of quinoa flour in water in a proportion of 1 in10 parts of water, previously gelatinized, to which was added an equivalent suspension of enzymes of 1,5 g/1000 g (50% of alpha amylase and 50% protease). With that, proteins were solubilized and starch was reduced to reducing su- gars, obtaining a liquid product at an average concentration of 8,5% that was later con- centrated to 45% of total solids. The hydrolysis process allows, on the basis of 1 kg of quinoa flour, toobtain80 to 85% of hydrolyzed material from20 to 15% of cellulosic residue, proteins and carbohydrates, non-digestible by the enzymes. The experiences that were carried out brought as results the following optimum values of kinetic parameters: Concentration of substrate: 10,0 %; Temperature: 60 ºC; pH: 5,0 and enzyme con- cent...

Se Teniendo en cuenta que un producto, como la “quinua” es lo suficientemente nutritivo y digerible; es necesario que tenga un grado de hidrólisis que permita solubilizar la proteína, almidón, fibras, etc. cambiando sus propiedades organolépticas para hacerlo más aceptable y aprovechable. Por ello la investigación se orientó a determinar los parámetros cinéticos de pH, temperatura y concentración de sustrato que permitan el proceso de hidrólisis de harina de “quinua” en una proporción de 1 en 10 partes de agua, previamente gelatinizada, a la cual se le adicionó una suspensión de enzimas equivalente a 1,5g/1000 g (50% de alpha amilasa y 50 % de proteasa). Con lo cual se logro solubilizar las proteínas y reducir el almidón a azucares reductores, obteniéndose un producto liquido a una concentración promedio del 8,5 %, que fue posteriormente concentrado a 45 % de s�...