The possibility of using a commercial vegetable fat blend in Kashar cheese was investigated. Kashar cheeses were manufactured by replacing the milk fat (MF) with a vegetable fat (VF) blend. Kashar cheeses from whole milk were also manufactured to compare textural, microstructural, meltability, color and sensory characteristics during a ripening period of 90 days. The use of vegetable fat decreased the meltability, hardness, cohesiveness, gumminess and chewiness of the cheese; while increasing adhesiveness where springiness was not affected. Differences became less notable toward the end of ripening. Scanning electron micrographs displayed VF cheese with a compact network with small and uniform fat globules embedded in the protein matrix. The MF cheese exhibited an open protein matrix containing milk fat globules of various sizes and forms. The color analysis demonstrated significant differences between cheeses. Finally, all sensory characteristics of the cheese were affecte d by the vegetable fat blend.<br><br>La posibilidad de usar una mezcla de grasas vegetales comerciales en queso Kashar fue investigada. Los quesos Kashar fueron elaborados con una mezcla de grasas vegetales (VF) en lugar de grasa de leche (MF). Quesos Kashar con leche entera fueron también elaborados para comparar las características sensoriales, de color, de fusión, microestructurales y de textura durante el periodo de maduración de 90 días. El uso de grasas vegetales decreció la dureza y las propiedades de fusión, de cohesión, de gomosidad y de masticación e incremento la adhesividad mientras que la elasticidad no fue afectada. Las diferencias se hicieron menos notables hacia el final de la maduración. La micrografía electrónica de barrido de quesos VF mostro una red compacta con pequeños y uniformes glóbulos de grasa embebidos en la matriz de proteínas. Los quesos MF exhibieron una matriz de proteínas abierta conteniendo glóbulos de grasa de leche de varios tamaños y formas. El análisis del color demostró significativas diferencias entre los quesos. Finalmente, todas las características sensoriales del queso fueron afectadas por la mezcla de grasas vegetales
The chemical characteristics, fatty acid and conjugated linoleic acid (CLA) contents and cholesterol levels of some traditional Turkish cheeses that are consumed mostly in Turkey were determined in this study. The fatty acid and cholesterol contents and CLA amount of cheeses were analysed as methyl esters by gas chromatography. The aim of this study was to determine the nutritional profile of some Turkish cheeses produced by traditional methods. The major fatty acids of the cheeses were palmitic acid (C(16:0)) and oleic acid (C(18:1)). The saturated fatty acid content of samples changed between 60.80% and 76.57%, while the monounsaturated fatty acid content ranged from 21.42% to 34.05% and the polyunsaturated fatty acid content was between 1.47% and 3.59%. The CLA contents of the cheeses ranged from 0.44 to 1.04 g/100 g in fat. The cholesterol levels of the samples were determined as 44.6-147.69 mg/100 g in cheese.
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