ABSTRACT

Date palm (Phoenix dactylifera) fruit is an important food in the Middle East. Some date palm cultivars like the Ajwa is revered for its health-promoting properties. Phytochemicals like phenolic compounds are in part responsible for such health benefits. However, detailed information on these compounds is lacking. The present work aimed to investigate phytochemical components of Ajwa cultivar using UHPLC-ESI-QTOF-MS/MS in three different extraction solvents (aqueous, methanol–water, acetone–water) and three different extraction durations (2, 5 and 24 h). The proposed method provided tentative identification of 169 bioactive compounds out of which 44 (polyphenols and other phytochemical compounds) were successfully identified from three different extracts and three different extraction durations. Twenty-one compounds never previously reported in the Ajwa cultivar were identified. Aqueous-based extraction solvent and 24-h extraction duration yielded most phytochemical compounds.

摘要

枣椰树（Phoenix dactylifera）) 水果是中东地区的重要食品。一些椰枣品种，如 Ajwa，因其促进健康的特性而备受推崇。像酚类化合物这样的植物化学物质对这种健康益处有部分原因。然而，缺乏关于这些化合物的详细信息。本工作旨在使用 UHPLC-ESI-QTOF-MS/MS 在三种不同的提取溶剂（水、甲醇-水、丙酮-水）和三种不同的提取时间（2、5 和 24 小时）中研究 Ajwa 品种的植物化学成分. 所提出的方法初步鉴定了 169 种生物活性化合物，其中 44 种（多酚和其他植物化学化合物）从三种不同的提取物和三种不同的提取持续时间中成功鉴定。鉴定了 21 种以前从未在 Ajwa 栽培品种中报道过的化合物。水基提取溶剂和 24 小时提取持续时间产生了大多数植物化学化合物。