摘要
The carotenoid pigments of the date (Phoenix dactylifera) were investigated in 2 soft cultivars, ‘Hayany’ and ‘Barhee’, and in the semi-dry ‘Deglet Noor’. The total carotenoid content in the ripe fruit was 10–12 μg/g fresh weight. The carotenoid pattern in all investigated fruits was that of the chloroplast type, with only slight differences between the cultivars. Changes in the carotenoid pattern during ripening were followed in ‘Hayany’ and ‘Deglet Noor’. The total carotenoid content decreased drastically from 36.3 to 21.2 μg/g dry weight in the soft dates, and from 23.2 to 12.0 μg/g dry weight in the semi-dry cultivar. The carotenoid degradation may be due primarily to the loss of moisture during maturation, and is probably unrelated to the gradual darkening of the ripening fruit. The pattern of the retained carotenoids remained essentially similar.
The vitamin A values of the 3 cultivars, expressed as retinol equivalents, were calculated.
摘要译文
在2个软品种'Hayany'和'Barhee'以及半干'Deglet Noor'中研究了日期的类胡萝卜素色素（Phoenix dactylifera）。成熟果实中的类胡萝卜素总含量为10-12μg/ g鲜重。所有研究果实中的类胡萝卜素模式是叶绿体类型，品种之间仅有轻微差异。成熟过程中类胡萝卜素模式的变化遵循'Hayany'和'Deglet Noor'。软枣中总类胡萝卜素含量从36.3微克/克干重降至21.2微克/克，半干品种中干重从23.2微克/克降至12.0微克/克。类胡萝卜素降解可能主要是由于成熟过程中水分的损失，并且可能与成熟果实的逐渐变暗无关。保留的类胡萝卜素的模式基本保持相似。计算3个品种的维生素A值，以视黄醇当量表示。
JeanaGross[1];OraHaber[2];RaphaelIkan[2];. The carotenoid pigments of the date[J]. Scientia Horticulturae, 1983,20(3): 251-257