LC-MS/MS-QTOF Identification of Phenolic Compounds of Sideritis Species Cultivated in Greece

Separations Pub Date : 2024-07-26 DOI:10.3390/separations11080229

Eleftheria H. Kaparakou, C. Kanakis, Maroula G. Kokotou, Georgios Papadopoulos, P. Tarantilis

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Abstract

Phenolic compounds are plant secondary metabolites, one of the most common and widespread groups of substances in plants, as well as a major group of phytochemicals present in medicinal and aromatic plants. The phytochemical composition of the hydroalcoholic extracts from S. raeseri, S. scardica and S. syriaca was determined by LC-MS/MS-QTOF analysis. A total amount of 23 secondary metabolites were identified, including 17 flavonoids (Fs), 4 phenylethanoid glycosides (PEGs), 1 phenolic acid (PA) and 1 fatty acid (FA). Among the three species, the constituents that have been detected in all of nine samples were: verbascocide/isoverbascoside (PEG), apigenin 7-O- glucoside (F), isoscutellarein 7-O-[6″-O-acetyl]-allosyl(1→2)-glucoside (F) and apigenin 7-(4″-p-coumaroylglucoside) (F). This study contributes to the phytochemical characterization of the Sideritis spp. by providing a comparative study of bioactive compounds present in three different Sideritis species, S. raeseri, S. scardica and S. syriaca, which are widely used as a herbal medicine in Mediterranean region and Balkan Peninsula.

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LC-MS/MS-QTOF 鉴别希腊栽培凫苷物种的酚类化合物

酚类化合物是植物的次生代谢产物，是植物中最常见、最广泛的一类物质，也是药用植物和芳香植物中的主要植物化学物质。采用 LC-MS/MS-QTOF 分析方法测定了 S.raeseri、S. scardica 和 S. syriaca 水醇提取物中的植物化学成分。共鉴定出 23 种次生代谢物，包括 17 种黄酮类化合物（Fs）、4 种苯乙醇苷类化合物（PEG）、1 种酚酸类化合物（PA）和 1 种脂肪酸类化合物（FA）。在这三种植物中，9 份样品中均检测到的成分为：马鞭草苷/异马鞭草苷（PEG）、芹菜素 7-O-葡萄糖苷（F）、异桔梗皂苷 7-O-[6″-O-乙酰基]-allosyl(1→2)-葡萄糖苷（F）和芹菜素 7-(4″-对香豆酰葡萄糖苷)（F）。本研究通过对地中海地区和巴尔干半岛广泛用作草药的 S. raeseri、S. scardica 和 S. syriaca 这三种不同 Sideritis 属植物中存在的生物活性化合物进行比较研究，为 Sideritis 属植物的植物化学特征描述做出了贡献。

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