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Influencia de la época de cosecha sobre las características de la granadilla morada (Passiflora edulis Sims) y su jugo/Influence of harvest season on the characteristics of purple passion fruit (Passiflora edulis Sims) and its juice

Departamento de Agroindustria y Tecnología de Alimentos. Facultad de Ciencias Agrarias y Forestales. Universidad de Chile. Casilla 1004. Santiago. Chile

E. Sepúlveda

Departamento de Agroindustria y Tecnología de Alimentos. Facultad de Ciencias Agrarias y Forestales. Universidad de Chile. Casilla 1004. Santiago. Chile

A. Navarrete

Departamento de Agroindustria y Tecnología de Alimentos. Facultad de Ciencias Agrarias y Forestales. Universidad de Chile. Casilla 1004. Santiago. Chile

A. Rustom

Departamento de Agroindustria y Tecnología de Alimentos. Facultad de Ciencias Agrarias y Forestales. Universidad de Chile. Casilla 1004. Santiago. Chile

The effect of two different harvest seasons (winter and summer) on some characteristics of passion fruit and juice was studied. Three different harvests were made during the two seasons every 15-20 days. The soluble solids/acid ratio was used as a ripeness index. The weight, diameter, peel thickness and yield of juice and seeds were determined in the fruit. Soluble solids, pH, acidity, total and reduced sugars, starch, pectin and pectinesterase activity were determined in the juice. A sensory evaluation of the quality and intensity of aroma was made. Influence of the date of harvest on the technological characteristics of the fruit and juice were observed. Winter fruits showed higher weight, diameter and peel thickness and lower juice yield than those from the summer harvest. The juice from the summer harvest showed a higher content of soluble solids, less acidity, and a higher content in starch, pectin and sugars than that of the summer harvest. The sensory evaluation showed that the aroma of the juice from the summer harvest was better in intensity and quality than that of the winter fruit.

Key Words: passion fruit • juice • harvest season • Passiflora edulis

Food Science and Technology International, Vol. 4, No. 1, 45-51 (1998)
DOI: 10.1177/108201329800400106


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