The Eugenia and Syzygium genera include approximately 1000 and 1800 species, respectively, and both belong to the Myrtaceae. Their species present economic and medicinal importance and pharmacological properties. Due to their chemical diversity and biological activity, we are reporting the essential oils of 48 species of these two genera, which grow in South America and found mainly in Brazil. Chemically, a total of 127 oil samples have been described and displayed a higher intraspecific and interspecific diversity for both Eugenia spp. and Syzygium spp., according to the site of collection or seasonality. The main volatile compounds were sesquiterpene hydrocarbons and oxygenated sesquiterpenes, mainly with caryophyllane and germacrane skeletons and monoterpenes of mostly the pinane type. The oils presented many biological activities, especially antimicrobial (antifungal and antibacterial), anticholinesterase, anticancer (breast, gastric, melanoma, prostate), antiprotozoal (Leishmania spp.), antioxidant, acaricidal, antinociceptive and anti-inflammatory. These studies can contribute to the rational and economic exploration of Eugenia and Syzygium species once they have been identified as potent natural and alternative sources to the production of new herbal medicines.

中文翻译：

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来自巴西Eugenia和Syzygium物种的精油及其生物活性。

的尤金尼亚和蒲桃属包括约1000个1800种，分别和同属桃金娘科。它们的种类具有经济和医学重要性以及药理特性。由于它们的化学多样性和生物活性，我们正在报告这两个属的48种植物的精油，它们在南美生长，主要分布在巴西。化学上，已经描述了总共127个油样品，并显示了两个紫锥菊的种内和种间较高的多样性。和蒲桃spp。，根据收集地点或季节性而定。主要挥发性化合物为倍半萜碳氢化合物和含氧倍半萜烯，主要具有石竹兰和麦哲伦骨架以及大部分为pin烷型的单萜。这些油具有许多生物学活性，尤其是抗菌药（抗真菌药和抗菌药），抗胆碱酯酶，抗癌药（乳腺癌，胃癌，黑色素瘤，前列腺癌），抗原生动物药（利什曼原虫属），抗氧化剂，杀螨剂，抗伤害性和抗炎性。一旦被确定为生产新草药的有效天然和替代来源，则这些研究将有助于对Eugenia和Syzygium物种进行合理和经济的探索。