Chemical composition and sensory analysis of peanut pastes elaborated with high-oleic and regular peanuts from Argentina

Abstract

El objetivo del trabajo fue determinar la composición quí- mica, atributos sensoriales y la aceptabilidad de pastas de cacahuete elaboradas a partir del cultivar alto oleico, Granoleico (GO-P), en comparación con el cultivar convencional, Tegua (T-P), de cacahuetes desarrollados en Argentina. GOP presentó mayor contenido de aceite (50.91%) que T-P (48.95%). GO-P y T-P no mostraron diferencias en los contenidos de cenizas y carbohidratos. T-P presentó mayor contenido de proteínas (27.49%) que GO-P (26.68%). GO-P mostró contenidos significativamente mayores de ácido oleico y menores de ácido linoleico (78.50% y 4.60%, respectivamente) que T-P (45.80% y 33.30%, respectivamente). Además, GO-P mostró mayor porcentaje de ácido eicosenoico y menor en ácido palmítico que T-P. Los análisis de aceptabilidad no presentaron diferencias significativas entre las muestras GO-P y T-P. En el análisis descriptivo, GO-P mostró mayor intensidad en el atributo de textura “aceitosidad”. Los otros atributos sensoriales no presentaron variaciones significativas entre las muestras de pasta de cacahuete. GO-P y T-P tienen una marcada diferencia en la composición de ácidos grasos. Sin embargo, no hay diferencias en aceptabilidad y análisis sensorial descriptivo entre las muestras de pastas de cacahuete excepto por el atributo “aceitosidad”.

The objective of this work was to determine the chemical composition, sensory attributes and consumer acceptance of peanut pastes prepared with the high-oleic cultivar, Granoleico (GO-P), in comparison with the regular cultivar, Tegua (T-P), of peanuts grown in Argentina. GO-P had higher oil contents (50.91%) than T-P (48.95%). GO-P and T-P did not show differences in ash and carbohydrate contents. T-P exhibit higher protein content (27.49%) than GO-P (26.68%). GO-P had significantly higher oleic and lower linoleic contents (78.50% and 4.60%, respectively) than T-P (45.80% and 33.30%, respectively). In addition, GO-P showed higher eicosenoic acid and lower palmitic acid percentages than TP. The consumer acceptance analysis did not show significant differences between samples of GO-P and T-P. In the descriptive analysis, GO-P showed a higher intensity rating in the oiliness texture attribute than in T-P. The other sensory attributes did not show significant variations between the peanut paste samples. GO-P and T-P have a significant difference in fatty acid composition. However, there were no differences in consumer acceptance and descriptive analysis between samples of peanut pastes except for the oiliness attribute.