Phenolic composition profiling of different edible parts and by-products of date palm (Phoenix dactylifera L.) by using HPLC-DAD-ESI/MSn
Phenolic composition profiling of different edible parts and by-products of date palm (Phoenix dactylifera L.) by using HPLC-DAD-ESI/MSn
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DOI：
10.1016/j.foodres.2016.10.018
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发表时间：
2017-10-01
影响因子：
8.1
通讯作者：
Ferreres, Federico
中科院分区：
文献类型：
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作者：
Abu-Reidah, Ibrahim M.;Gil-Izquierdo, Angel;Ferreres, Federico
水果和蔬菜是膳食抗氧化剂的重要来源，流行病学研究表明，在饮食中经常摄入水果和蔬菜可以降低患几种慢性疾病的风险。凤梨是一种重要的作物，由于其具有促进健康的特性，在阿拉伯地区和世界其他地区广泛用作食品和民间药物。存在于植物性食物中的抗氧化植物化学物质是这些健康益处的部分原因。枣中的抗氧化剂主要是酚类物质，如类黄酮和酚酸。枣子的酚类成分已被广泛研究。然而，在参考书目中很少有关于枣椰树的其他不可食用部分的研究。在这种情况下，在本工作的不同部位的酚类成分的dactylifera (cv。在负电离模式下，采用HPLC-DAD-ESI/MS对果实果肉和果皮、叶（叶）、簇和花粉进行了研究。酚类化合物的整体分析表明，不同日期部位的酚类化合物具有质的相似性。方法初步鉴定了槲皮素、木犀草素、芹菜素、黄铜醇、山奈酚、异鼠李素、3-甲基异鼠李素、硫酸盐和丙二醇衍生物等52种化合物。在目前的工作中，有30多种酚类衍生物是首次在日期上描述的。据我们所知，山奈酚苷和丙二醇衍生物尚未在以前的P. dactylifera中被描述。该研究结果强调了dactylifera l.l作为一种有前途的功能性成分来源的重要性，并促进了其在食品和营养保健工业中的潜在应用。所获得的质谱数据、MSn碎片图谱和UV信息对所检测化合物的解释和结构鉴定有很大的帮助。(C) 2016 Elsevier Ltd.版权所有。
Fruits and vegetables are an important source of dietary antioxidants and epidemiological studies show that their regular intake in the diet may decrease the risk of several chronic diseases. Phoenix dactylifera L. (date palm or dates) is an important crop, widely used in the Arabian region and in other parts of the world as a food and also in folk medicine, due to its health-promoting properties. Antioxidant phytochemicals present in plant foods are partly responsible for such health benefits. The antioxidants present in dates are mainly phenolics, like flavonoids and phenolic acids. The fruits of dates have been widely studied with regard to their phenolic composition. However, few studies are available in the bibliography regarding other, non-edible parts of the date palm tree. In this context, in the present work the phenolic components of different parts of P. dactylifera (cv. Medjool or Mejhool) - namely, fruit pulp and skin, fronds (leaves), clusters, and pollen - have been investigated using HPLC-DAD-ESI/MS" in the negative ionization mode. The overall analysis of the phenolic compounds revealed that there was a qualitative similarity among the different dates parts analyzed. The method used provided tentative identification of 52 compounds: mainly flavonoid glycosides of quercetin, luteolin, apigenin, chrysoeriol, kaempferol, isorhamnetin, 3-methyl-isorhamnetin, sulfates, and malonyl derivatives. In the present work, more than 30 phenolic derivatives are described for the first time in dates. To the best of our knowledge, kaempferol glycosides and malonyl derivatives have not been described previously in P. dactylifera. The results highlight the importance of P. dactylifera L.as a promising source of functional ingredients and boost its potential use in the food and nutraceutical industries. The MS data, MSn fragmentation pattern, and UV information obtained have been of great help in the interpretation of the compounds detected and in their structural identification. (C) 2016 Elsevier Ltd. All rights reserved.