ABSTRACT In this study, composition and antimicrobial effects of essential oils of Achillea gypsicola Hub.-Mor. root-stem, leaf, flower, flower head samples were evaluated periodically and daily. Major components of the essential oils were camphor, 1,8-cineol and borneol. Significant differences in camphor, 1,8-cineole and borneol ratios were determined depending on the phenological periods, plant parts and harvest time. The highest major component rates were detected in camphor obtained from root-stem samples harvested at full flowering period-1 pm, in 1,8-cineole obtained from flower head samples harvested before seed maturation stage, and in borneol obtained from root-stem samples harvested at pre-flowering stage-6 am. A total of 23 new compounds were first detected in A. gypsicola. When all plant parts are evaluated, it was determined that flower head samples harvested in the evening at seed maturation stage and leaf samples harvested in the evening at post flowering stage showed strong antimicrobial activities against microorganisms.

中文翻译：

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确定 Achillea gypsicola Hub.-Mor. 的精油成分和抗菌活性。在不同的植物部位和物候阶段

摘要 在这项研究中，Achillea gypsicola Hub.-Mor. 精油的成分和抗菌作用。定期和每天评估根茎、叶、花、头状花序样品。精油的主要成分是樟脑、1,8-桉树脑和冰片。樟脑、1,8-桉树脑和冰片比例的显着差异取决于物候期、植物部位​​和收获时间。主要成分率最高的是从盛花期 - 下午 1 点采集的根茎样品中获得的樟脑、从种子成熟期前采集的头状花序样品中获得的 1,8-桉树脑，以及从根茎样品中获得的冰片在开花前到早上 6 点收获。在 A. gypsicola 中首次检测到总共 23 种新化合物。当评估所有植物部分时，