HOME > EDICIONES > Año 2001, Volumen 51 - Número 3
Trabajos de Investigación
Actividad ureásica en productos de soja. Propuesta de un nuevo método
M.C. Olguin, M.I. Zingale, G.C. Revelant, M.E. Vignale
Facultad de Ciencias Bioquímicas y Farmacéuticas. U.N.R. Suipacha - Argentina.
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SUMMARY
Ureasic activity in soy products. Proposal of a new method
The evaluation of residual ureasic activity in soy products is usually employed as an indicator of the efficiency of the inhibition treatments. The purpose of this study is to compare the AACC method (22-90), based on differences of pH, with an assay where ureasic activity is measured by its hidrolitic action on urea and quantification of the ammonium produced with Bethelot reaction. Twenty different samples of soy bean flour with and without thermal inactivation treatments were assessed with the two methods. The new method has a good correlation with that of the AACC - r = 0,9416 (p < 0.0001). It also presents a better specificity because it measures the concentration of the reaction product and shows a more amplified answer than the increase of pH.
Key words: Soybean flours, antinutrients, urease activity.
Recibido: 01/12/2000
Aceptado: 19/06/2001
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PRIVACIDAD | ACCESIBILIDAD
ALAN-VE ISSN 0004-0622 - Depósito Legal: pp 199602DF83
Sociedad Latinoamericana de Nutrición
Producción editorial en Venezuela: Capítulo Venezolano - RIF: J-30843129-0
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