Department of Botany, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt.
Plant Production Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box, 2460, Riyadh 11451, Saudi Arabia.
Chem Biodivers. 2021 Apr;18(4):e2000914. doi: 10.1002/cbdv.202000914. Epub 2021 Feb 24.
Essential oils (EOs) are a promising group of natural products of the aromatic plants due to their various biological effects such as allelopathic, antioxidant, antimicrobial activities. The present study aimed to construct the detailed chemical profile of the EO derived from Deverra tortuosa aerial parts along with assessing its allelopathic, antimicrobial, and antioxidant potentialities. The EO was extracted by hydrodistillation and analyzed via gas chromatography-mass spectrometry (GC/MS). The allelopathic activity of the EO was assessed against the germination and seedling growth of the weed Chenopodium murale. Also, the EO was tested against five microbes. The antioxidant activity was determined using the free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS). The GC/MS analysis of EO revealed the presence of 86 compounds with a preponderance of oxygenated sesquiterpenes and monoterpene hydrocarbons. Widdrol, β-phellandrene, piperitol, cubedol, α-terpinene, (E)-10-heptadecen-8-ynoic acid methyl ester, citronellyl tiglate, and m-cymene were the major compounds. A comparative profile was established between the EOs constituents of our study with the documented EOs of D. tortuosa and the other Deverra species around the world via agglomerative hierarchical clustering (AHC) and principal components analysis (PCA). The EO showed a substantial allelopathic activity against C. murale, as well as it showed considerable antimicrobial and antioxidant activities. Thereby, the EO of D. tortuosa could be considered as a promising environmental-friendly bioherbicide against weeds. Also, it could be integrated into food preservation due to its potent antimicrobial and antioxidant activities. However, further study is recommended for more characterization of the major compounds and evaluation of their activities, either singular or synergistic, and assess their efficiency and biosafety.
精油（EOs）是芳香植物中一类具有广阔应用前景的天然产物，因为它们具有多种生物活性，如化感作用、抗氧化和抗菌活性。本研究旨在构建德维拉·扭曲（Deverra tortuosa）地上部分精油的详细化学成分，并评估其化感、抗菌和抗氧化潜力。通过水蒸馏法提取精油，并通过气相色谱-质谱联用仪（GC/MS）进行分析。通过评估精油对杂草藜（Chenopodium murale）种子萌发和幼苗生长的化感作用来评估其化感活性。此外，还测试了精油对五种微生物的作用。抗氧化活性通过自由基 2,2-二苯基-1-苦基肼（DPPH）和 2,2'-联氮双-3-乙基苯并噻唑啉-6-磺酸（ABTS）测定。GC/MS 分析表明，精油中含有 86 种化合物，其中含氧倍半萜和单萜烃类化合物占优势。Widdrol、β-蒎烯、哌啶醇、古巴醇、α-松油烯、（E）-10-十七碳-8-炔酸甲酯、橙花叔醇缩甘油酯和对伞花烃是主要成分。通过凝聚层次聚类（AHC）和主成分分析（PCA），我们建立了本研究的精油成分与已发表的德维拉·扭曲和世界各地其他德维拉属植物的精油成分之间的比较图谱。该精油对藜表现出显著的化感活性，同时对微生物和抗氧化活性也具有相当的活性。因此，德维拉·扭曲的精油可以被认为是一种有前途的环保型生物除草剂，可用于防治杂草。此外，由于其强大的抗菌和抗氧化活性，它也可以应用于食品保鲜。然而，建议进行进一步的研究，以更详细地描述主要化合物的特征，并评估它们的单一或协同活性，以及评估它们的效率和生物安全性。
