Alarcón Libia, Peña Alexis, Velascd Judith, Baptista José Gregorio, Rojas Luis, Aparicio Rosa, Usubillaga Alfredo
Nat Prod Commun. 2015 Apr;10(4):655-6.
The essential oil from the leaves ofRuilopezia bracteosa was obtained by hydrodistillation, and analyzed by GC-MS. Eighteen components, which made up 99.6% of the oil were identified, the most abundant being β-myrcene (34.2%), α-pinene (24.3%), 7-epi-α-selinene (9.1%), β-pinene (8.5%) and 6,9-guaiadiene (4.4%). Antibacterial activity was tested against Gram-positive and Gram-negative bacteria using broth microdilution and disk agar diffusion methods. MIC values found presented significant differences between both methods, which may be due to diffusion factors.
通过水蒸馏法从具苞片瑞洛佩齐亚（Ruilopezia bracteosa）叶片中获得精油，并采用气相色谱-质谱联用（GC-MS）进行分析。共鉴定出18种成分，占精油的99.6%，其中含量最高的是β-月桂烯（34.2%）、α-蒎烯（24.3%）、7-表-α-芹子烯（9.1%）、β-蒎烯（8.5%）和6,9-愈创木二烯（4.4%）。采用肉汤微量稀释法和纸片琼脂扩散法对革兰氏阳性菌和革兰氏阴性菌进行抗菌活性测试。发现两种方法的最低抑菌浓度（MIC）值存在显著差异，这可能是由于扩散因素所致。
