Correlation between VOC fingerprinting and antimicrobial activity of several essential oils extracted by plant resins against A. tumefaciens and P. savastanoi,Flavour and Fragrance Journal

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Correlation between VOC fingerprinting and antimicrobial activity of several essential oils extracted by plant resins against A. tumefaciens and P. savastanoi
Flavour and Fragrance Journal ( IF 2.1 ) Pub Date : 2019-07-18 , DOI: 10.1002/ffj.3518
Stefania Caparrotta ₁ , Diego Comparini ₁ , Elettra Marone ₂ , Rebecca Kimmenfield ₃ , Laura Luzzietti ₁ , Cosimo Taiti ₁ , Stefano Mancuso ₁

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The present work aimed to assess the antimicrobial activity of twelve essential oils extracted from plant resins of trees that grow in several tropical and subtropical regions of the world. Eleven essential oils were extracted from resins of plant belonging to the Burseraceae family (the genera Boswellia, Commiphora, Canarium and Bursera); the remaining oil was extracted from a resinous plant belonging to the Fabaceae family (genus Hymenea). The extraction was carried out using a conventional distillation method. The volatile organic compounds (VOCs) of each essential oil were analyzed with PTR‐ToF‐MS (proton transfer reaction time‐of‐flight mass spectrometry) and the antimicrobial activity was evaluated against the phytopathogens Agrobacterium tumefaciens and Pseudomonas savastanoi pv. savastanoi. The essential oils obtained from Boswellia papyrifera, B. dalzielii, B. frereana and B. rivae were the most abundant in terms of signal intensity and VOC number in comparison with the other analyzed essential oils. Furthermore, B. neglecta shared a common volatile profile with the Canarium species, as was demonstrated previously in the literature. Greater bacterial growth inhibition of A. tumefaciens was detected with the essential oils extracted from plants belonging to Boswellia species while less action was observed against P. savastanoi. Finally, a positive correlation was found between terpenes and terpenoid compounds and bacterial growth inhibition, suggesting these essential oils as a new source of bioactive compounds for the prevention, protection and treatment of plant diseases.

中文翻译：

植物树脂提取的几种精油的挥发性有机化合物指纹图谱与抑菌活性之间的相关性

本工作旨在评估从生长在世界几个热带和亚热带地区的树木的植物树脂中提取的十二种精油的抗菌活性。十一精油从属于橄榄科家族（该属植物的提取树脂乳香，C ommiphora，橄榄和苦）; 剩余的油从属于豆科的树脂植物中提取的（Hymenea属）。使用常规蒸馏方法进行萃取。使用PTR-ToF-MS（质子转移反应飞行时间质谱）分析了每种精油的挥发性有机化合物（VOC），并评估了对根癌农杆菌和假单胞菌假单胞菌（Pseudomonas savastanoi pv ）的抗菌活性。萨瓦斯坦诺瓦。从所获得的精油乳香树果，B. dalzielii，B. frereana和B. rivae是信号强度和VOC数量方面最丰富相比与其他分析精油。此外，B。neglecta与如先前文献中所证明的，ar属物种。从乳香属植物中提取的香精油可以更好地抑制根癌农杆菌的生长，而观察到的对savastanoi的作用却较小。最后，在萜类和萜类化合物与细菌生长抑制之间发现正相关，表明这些精油作为预防，保护和治疗植物病害的生物活性化合物的新来源。

更新日期：2019-07-18

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