Detailed chemical constituents of essential oil from the Pterocephalus hookeri leaves and its antimicrobial activities were investigated in this study. The essential oil, obtained by hydrodistillation, was characterized by gas chromatography-flame ionization detection and gas chromatography-mass spectrometry analyses. Among the 90 identified compounds, hexadecanoic acid (21.27%), phytol (8.03%), furfural (7.08%), oleic acid (5.25%), and phytone (4.56%) were the major components. In the antimicrobial assay, the essential oil showed strong inhibitory activities against Escherichia coli, Candida albicans, and Staphylococcus aureus with minimum inhibitory concentration values of 31.3, 62.5, and 125 µg/mL, respectively. To our knowledge, this is the first report concerning chemical composition and antimicrobial activities of the essential oil from Pterocephalus hookeri.

在这项研究中详细研究了钩端螺旋体叶的精油的化学成分及其抗菌活性。通过气相色谱-火焰电离检测和气相色谱-质谱分析对加氢蒸馏得到的精油进行表征。在确定的90种化合物中，十六烷酸（21.27％），植醇（8.03％），糠醛（7.08％），油酸（5.25％）和植酮（4.56％）是主要成分。在抗菌测定中，精油对大肠杆菌，白色念珠菌和金黄色葡萄球菌显示出强大的抑制活性。最小抑菌浓度分别为31.3、62.5和125 µg / mL。据我们所知，这是有关钩端蕨中精油化学成分和抗菌活性的首次报道。