Valorization of Essential Oils from Moroccan Aromatic Plants

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Essential oils from Greek Mentha species showed different chemical compositions for two populations of M. pulegium, characterized by piperitone and pulegone. Mentha spicata essential oil was characterized by endocyclic piperitenone epoxide, piperitone epoxide, and carvone. The bioactivities of these essential oils and their components have been tested against insect pests (Leptinotarsa decemlineata, Spodoptera littoralis and Myzus persicae), root-knot nematodes (Meloydogine javanica) and plants (Lactuca sativa, Lolium perenne, Solanum lycopersicum). The structure-activity relationships of these compounds have been studied including semi-synthetic endocyclic trans-carvone epoxide, exocyclic carvone epoxide, a new exocyclic piperitenone epoxide and trans-pulegone epoxide. Leptinotarsa decemlineata feeding was affected by piperitenone and piperitone epoxide. Spodoptera littoralis was affected by piperitone epoxide and pulegone. The strongest nematicidal agent was piperitenone epoxide, followed by piperitone epoxide, piperitenone and carvone. Germination of S. lycopersicum and L. perenne was significantly affected by piperitenone epoxide. This compound and carvone epoxide inhibited L. perenne root and leaf growth. Piperitenone epoxide also inhibited the root growth of S. lycopersicum. The presence of a C(1) epoxide resulted in strong antifeedant, nematicidal and phytotoxic compounds regardless of the C(4) substituent. New natural crop protectants could be developed through appropriate structural modifications in the p-menthane skeleton.

“…pulegium EO from Morocco, rich in pulegone (similar to EOpul2 but without iso ‐menthone), resulted inactive against M . javanica . None of the major components of the M .…”

Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…pulegium ) and nematicidal ( M . spicata ) effects . Chemical variations have been reported for Greek populations of M .…”

Section: Introductionmentioning

confidence: 95%

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Biocidal Compounds from Mentha sp. Essential Oils and Their Structure–Activity Relationships

Kimbaris

González-Coloma⊥

Andrés

et al. 2017

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“…The experiments were conducted with L. sativa cv Teresa (Fito, España), and L. perenne ( Batlle ) seeds, as described . Briefly, 2.5 cm diameter filter paper with 20 μl of the test compound (10 μg/μl for extracts and 5 μg/μl for pure compounds) were placed on 12‐well plates ( Falcon ).…”

Section: Methodsmentioning

confidence: 99%

Insect Antifeedant and Ixodicidal Compounds from Senecio adenotrichius

Ruiz-Vásquez

Olmeda

Zúñiga

et al. 2016

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Nine eremophilane sesquiterpenes 1 - 9, two flavonoids 11 and 12, and two known pirrolizidine alkaloids 13 and 14, were isolated from Senecio adenotrichius DC. Their structures were elucidated on the basis of spectroscopic data and by comparison with previously reported spectroscopic data of similar compounds. Compounds 5, 7, and 9 have not been previously reported as natural products. The antifeedant activity of these compounds was tested against Spodoptera litoralis and Myzus persicae. Eremophilanes 1, 3, and 8 were strong antifeedants to M. persicae, and 1 and 8 to Spodoptera littoralis. Their ixodicidal activity was tested against the tick Hyalomma lusitanicum, with eremophilanes 1, 3, and 8, being strong ixodicidal agents.

Chemical Variability of Moroccan Myrtle Oil

Bakhy¹,

Belhachmi²,

Benabdelouahab³

et al. 2021

Thirty‐three oil samples isolated from aerial parts of Myrtus communis L. harvested in seven localities, from Northern to Central Morocco, have been analyzed by combination of chromatographic and spectroscopic techniques. The 33 compositions have been subjected to statistical analysis, hierarchical cluster analysis (HCA) and principal component analysis (PCA). Two groups have been differentiated on the basis of their myrtenyl acetate and α‐pinene contents and each one was sub‐divided in two sub‐groups according to the contents of 1,8‐cineole and linalool. The compositions of our 33 myrtle oil samples may be named as follow by their main components: sub‐group IA (13/33): α‐pinene/1,8‐cineole/linalool; sub‐group IB (6/33): 1,8‐cineole/α‐pinene; sub‐group IIA (10/33): 1,8‐cineole/myrtenyl acetate; sub‐group IIB (4/33): myrtenyl acetate.