The resin of the plant Commiphora wildii Merxm. (omumbiri) is traditionally used by Ovahimba women (Kunene, Namibia) as the main ingredient for their perfume. Although essential oil produced from the resin by steam distillation is sold commercially, its detailed chemical composition and biological properties are not known. Knowledge on the potential antimicrobial and antioxidant activities of C. wildii essential oil is desired by perfume, cosmetics, and detergent manufacturers, in order to add value to their products when using the oil as an ingredient. Furthermore, once the oil has been chemically characterized, the concentrations of the bioactive constituents can be monitored for quality‐control purposes. In this study the chemical characterization of the volatile constituents of the essential oil of C. wildii resin was performed using gas chromatography–mass spectrometry (GC–MS) and GC coupled to a flame ionization detector (GC–FID). Fifty compounds were identified in the oil, most of which were terpenoids. The major compounds were α‐pinene (50.0% w/w), heptane (24.0% w/w), and β‐pinene (11.7% w/w). The antimicrobial activity of the oil was determined against Candida albicans, Escherichia coli, Klebsiella pneumaniaea, and Staphylococcus aureus. The best antimicrobial activity was noted against S. aureus, with a minimum inhibitory concentration (MIC) of 8 mg ml^–1. Biofilm reduction was below 40%, but inhibition was between 93% (K. pneumaniaea) and 99% (C. albicans). An 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) radical scavenging assay revealed the antioxidant potential of the oil (with a half‐maximal inhibitory concentration, IC₅₀, of 0.2257 mg ml^–1).These results may be used by different industries to guide the formulation of their products and also to assess the safety of this oil when used as an ingredient.

中文翻译：

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Commimiphora wildii Merxm精油的化学表征以及体外抗氧化和抗菌活性。（omumbiri）树脂

植物Commiphora wildii Merxm的树脂。（omumbiri）传统上是由Ovahimba妇女（纳米比亚Kunene）用作其香水的主要成分。尽管通过蒸汽蒸馏由树脂生产的精油已商业出售，但其详细的化学组成和生物学特性尚不清楚。对野生假丝酵母潜在的抗菌和抗氧化活性的了解香水，化妆品和洗涤剂制造商需要精油，以便在使用该油作为成分时为其产品增加价值。此外，一旦对油进行了化学表征，就可以出于质量控制目的对生物活性成分的浓度进行监测。在这项研究中，使用气相色谱-质谱法（GC-MS）和与火焰离子化检测器（GC-FID）联用的GC对野生樟脑藤香树脂挥发油的化学成分进行了化学表征。油中鉴定出五十种化合物，其中大多数是萜类化合物。主要化合物为α-pine烯（50.0％w / w），庚烷（24.0％w / w）和β-pine烯（11.7％w / w）。确定了该油对白色念珠菌的抗菌活性，大肠杆菌，肺炎克雷伯菌和金黄色葡萄球菌。注意到对金黄色葡萄球菌具有最佳的抗菌活性，最低抑菌浓度（MIC）为8 mg ml ^–1。生物膜减少低于40％，但抑制作用介于93％（肺炎克雷伯氏菌）和99％（白色念珠菌）之间。2,2-二苯基-1-吡啶并肼基（DPPH）自由基清除试验显示了该油的抗氧化潜能（半最大抑制浓度IC ₅₀为0.2257 mg ml ^–1）。这些结果可能被不同行业用来指导其产品的配方，并在用作成分时评估该油的安全性。