In Spain, jujube can be considered a minor crop; thus, its cultivars have not yet been investigated in depth. The objective of this study was to evaluate the composition, nutritional profile, and volatile composition of three cultivars of Spanish jujube fruits. The total antioxidant activity and phenolic compounds in peel and pulp of the fruits were studied. The obtained results proved that 'Isidro' cultivar presented the largest fruits, had the highest ascorbic acid content, with a good color intensity, total soluble solid content, and glucose and fructose. In addition, fruits of the ‘Isidro’ cultivar presented together with the 'Phoenix' ones, the highest protein content and juiciness. The cultivar ‘Phoenix’ behaved differently than the other two cultivars studied; its fruits had significantly lower contents of total phenols, flavonoids and flavonols and these compounds were mainly accumulated in the pulp. In the other two cultivars, bioactive compounds reached higher values and were mainly accumulated in their peels. 'Isidro' was the cultivar that presented maximum amounts of phenols and total flavonoids. Thus, both cultivars 'Isidro' and 'Phoenix' could be promising cultivars to be used in future breeding programs, to obtain fruit with high content of bioactive compounds as well as interesting organoleptic properties.

在西班牙，枣可被视为次要作物。因此，尚未对其品种进行深入研究。这项研究的目的是评估西班牙枣果实的三个品种的成分，营养状况和挥发性成分。研究了果皮和果肉中的总抗氧化活性和酚类化合物。获得的结果证明，“ Isidro”栽培品种呈现最大的果实，具有最高的抗坏血酸含量，具有良好的色强度，总可溶性固形物含量以及葡萄糖和果糖。此外，'Isidro'品种的果实与'Phoenix'品种一起呈现，具有最高的蛋白质含量和多汁性。品种“凤凰”的行为与所研究的其他两个品种不同。其果实的总酚含量明显较低，黄酮类化合物和黄酮醇类以及这些化合物主要聚集在纸浆中。在其他两个品种中，生物活性化合物的含量更高，并且主要积累在果皮中。“ Isidro”是表现出最大量的酚和总黄酮含量的品种。因此，“ Isidro”和“ Phoenix”两个品种都有望在未来的育种计划中使用，以获得具有高生物活性化合物含量和有趣的感官特性的果实。