[Cardon dato (Stenocereus griseus, Cactaceae) fruit pulp as raw material for marmalade production]. / Pulpa del fruto del cardón dato (Stenocereus griseus, Cactaceae) como materia prima para la elaboración de mermelada.

This study aimed to examine the possibility of producing marmalades from the fruit pulp of the red and white varieties of card6n dato (Stenocereus griseus). We developed the formulations of the marmalades and evaluated their stability during three months of storage at room temperature. As first step, we characterized the fruits of the two color varieties, observing that despite the considerable difference between both color varieties, there were no significant differences in average weight, dimensions and proportion of pulp, skin and seeds. The pulp of the two color types had high pH (5.2) values and low contents of reductor sugars (3.59 g/ 100 g white variety 2.23 g/ 100 g red variety), non reductor sugars (0.75 g/ 100 g white variety and 2.03 g/ 100 g red variety), pectin (0.14 g/ 100 g white variety and 0.23 g/ 100 g red variety) and acids (7.67 g/ 100 g white variety and 0.15 g/ 100 g red variety). It is needed to include sugar, pectin, and citric acid in the marmalade formula. The first marmalades produced were gummy, a problem that we solved adding the acid from the beginning of the making process. During the three months of storage, the marmalades had good acceptance by the evaluators, this despite slight fluctuations observed in pH, solid contents, and acidity.

Pulpa del fruto del cardón dato (Stenocereus griseus, Cactaceae) como materia prima para la elaboración de mermelada / Cardon dato (Stenocereus griseus, Cactaceae) fruit pulp as raw material for marmalade production

El presente trabajo de investigación se evaluó la posibilidad de elaborar mermeladas a partir de la pulpa de los frutos de cardón dato (Stenocereus griseus) de las variedades Blanca y Roja. Para ello, se propuso desarrollar las formulaciones de dichas mermeladas y estudiar su estabilidad durante tres meses de almacenamiento a temperatura ambiente. Como primer paso se caracterizaron los frutos de ambas variedades, observándose que a pesar de la diferencia notable de color entre ambos, no hay diferencias estadísticamente significativas en su peso promedio, dimensiones y proporciones de pulpa, piel y semillas. Por otro lado, ambas pulpas presentaron valores altos de pH (5,2 en ambas variedades) y contenidos bajos de azúcares reductores (3,59 g/100g variedad Blanca y 2,23 g/100g variedad Roja), azúcares no reductores (0,75 g/100g variedad Blanca y 2,03 g/100g variedad Roja), pectina (0,14 g/100g variedad Blanca y 0,23 g/100g variedad Roja) y ácidos (7,67 g/100g variedad Blanca y 0,15 g/100g variedad Roja), debido a lo cual fue necesario añadir azúcar, pectina y ácido cítrico a la formulación de la mermelada. La primeras mermeladas elaboradas presentaron consistencia gomosa, lo cual se solucionó añadiendo el ácido desde el principio del proceso de elaboración en lugar de al final. Durante los tres meses de almacenamiento, las mermeladas tuvieron buena aceptación por parte de los panelistas, a pesar de ligeras fluctuaciones observadas durante el almacenamiento en el pH y contenidos de sólidos solubles y acidez total titulable.

This study aimed to examine the possibility of producing marmalades from the fruit pulp of the red and white varieties of cardón dato (Stenocereus griseus). We developed the formulations of the marmalades and evaluated their stability during three months of storage at room temperature. As first step, we characterized the fruits of the two color varieties, observing that despite the considerable difference between both color varieties, there were no significant differences in average weight, dimensions and proportion of pulp, skin and seeds. The pulp of the two color types had high pH (5,2) values and low contents of reductor sugars (3,59 g/100g white variety 2,23 g/100g red variety), non reductor sugars (0,75 g/100g white variety and 2,03 g/100g red variety), pectin (0,14 g/100g white variety and 0,23 g/100g red variety) and acids (7,67 g/100g white variety and 0,15 g/100g red variety). It is needed to include sugar, pectin, and citric acid in the marmalade formula. The first marmalades produced were gummy, a problem that we solved adding the acid from the beginning of the making process. During the three months of storage, the marmalades had good acceptance by the evaluators, this despite slight fluctuations observed in pH, solid contents, and acidity.