Abstract

Phenolic compounds have attracted a lot of attention due to their benefits to human health. Jabuticaba (Myrciaria sp.) fruit has been described as an excellent source of these compounds, while Jabuticaba leaf, considered as plant residue, has shown functional effects. The present study aimed to characterize the phenolic profile in two different leaves extracts (hydroalcoholic ethanol and butanol) of Myrciaria sp. by UPLC-ESI-QTOF-MS^E. A total of 40 phenolic compounds were tentatively identified. Jabuticaba leaf extracts presented a rich and diversified composition of phenolic compounds, especially flavonoids, being ellagic acid, quercetin 3-O-glucoside, gallocatechin, and epigallocatechin the most abundant in butanol extracts. Very distinct phenolic profiles were obtained depending on the the solvent indicating that specific preparations can be obtained from the jabuticaba leaf depending on the desired application. This work emphasized the potential of this residue vegetable to be used as a functional ingredient.

摘要

酚类化合物因其对人体健康的益处而备受关注。Jabuticaba ( Myrciaria sp. ) 果实被描述为这些化合物的极好来源，而被认为是植物残渣的 Jabuticaba 叶已显示出功能作用。本研究旨在表征Myrciaria sp. 的两种不同叶子提取物（水醇乙醇和丁醇）中的酚类成分。通过 UPLC-ESI-QTOF-MS ^E. 初步鉴定出 40 种酚类化合物。Jabuticaba 叶提取物呈现出丰富多样的酚类化合物组成，尤其是黄酮类化合物，其中鞣花酸、槲皮素 3-O-葡萄糖苷、没食子儿茶素和表没食子儿茶素在丁醇提取物中含量最多。取决于溶剂，获得了非常不同的酚类成分，表明可以根据所需的应用从 jabuticaba 叶子中获得特定的制剂。这项工作强调了这种残留蔬菜用作功能成分的潜力。