Composition and antimicrobial activity of the essential oil from Algerian<i>Warionia saharae</i>Benth. &amp; Hook.

Gherib, Mohamed; Bekkara, Fewzia Atik; Bekhechi, Chahrazed; Bighelli, Ange; Casanova, Joseph; Tomi, Félix

doi:10.1080/10412905.2014.937008

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…A similar composition has been reported recently for Moroccan oils (four samples, mean content of carvotanacetone = 87.3%) and Algerian oils (36 samples, content of carvotanacetone = 89.2–96.1%). The antimicrobial effect of the essential oil was evaluated against bacteria, yeast and filamentous fungi (lowest minimum inhibitory concentration (MIC) value = 2 µl/ml) . However, to our knowledge, no phytochemical investigations on P. mauritanica root essential oil have been undertaken to date.…”

Section: Introductionmentioning

confidence: 99%

Thymyl esters derivatives and a new natural product modhephanone from Pulicaria mauritanica Coss. (Asteraceae) root oil

Gherib

Bekhechi

et al. 2014

Flavour & Fragrance J

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Root essential oil of Pulicaria mauritanica Coss. (Asteraceae) collected from western Algeria was analysed using a combination of chromatographic (CC, GC/FID, GC(RI)] and spectroscopic [GC-MS, 13 C-NMR] techniques. Thirty-eight compounds accounting for 90.4% of the whole composition were identified. The oil composition was dominated by thymyl derivatives (2,5-dimethoxy-p-cymene (37.2%), 6-methoxythymyl isobutyrate (14.2%), 10-isobutyryloxy-8,9-dehydrothymyl isobutyrate (4.8%) and thymyl isobutyrate (3.1%)), as well as by neryl isobutyrate (11.1%). A new natural compound was isolated and the structure was elucidated as 1S,2S,5S,8S-modhephan-3-one (relative stereochemistry).

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Section: Introductionmentioning

confidence: 99%

Thymyl esters derivatives and a new natural product modhephanone from Pulicaria mauritanica Coss. (Asteraceae) root oil

Gherib

Bekhechi

et al. 2014

Flavour & Fragrance J

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“…In continuation of our on-going work devoted to the valorization of aromatic and medicinal plants from Western Algeria [7,8], we recently investigated the chemical composition of the essential oil isolated from aerial parts of T. articulata and we demonstrated the occurrence of a fair chemical variability. Two main groups have been distinguished, the composition of the first being dominated by camphor and α-pinene.…”

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confidence: 99%

Composition and Chemical Variability of the Cone Oil from Algerian Tetraclinis articulata

Boussaïd

Bekhethi

Atik-Bekkara

et al. 2016

Natural Product Communications

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Very little is known about the yield and chemical composition of the essential oil isolated from cones of Tetraclinis articulata (Vahl) Masters (Cupressaceae). In continuation of our ongoing work devoted to the valorisation of medicinal and aromatic plants from Tlemcen Province (North-Western Algeria), cones have been harvested in eight locations (coastal township and highlands) and 40 oil samples have been isolated by hydrodistillation. Six oil samples were analyzed by a combination of chromatographic [GC(Retention indices)] and spectroscopic techniques (GC-MS, 13 C NMR). Then, the remaining 34 oil samples were analyzed by [GC(RI)] and 13 C NMR and the 40 compositions were submitted to statistical analysis. Essential oil yields varied substantially from sample to sample (0.17 to 1.13%, w/w). The cone oils consisted mainly of monoterpenes, with α-pinene (47.1-73.6%) and limonene (6.5-21.9%) being the main components. (E)-β-Caryophyllene and germacrene D were the major sesquiterpenes. Diterpenes, (Z) and (E)-biformene were identified for the first time in T. articulata essential oil. PCA analysis of the data allowed the distinction of two groups, the second group being subdivided into two subgroups. Groups and subgroups were differentiated with respect to their contents of α-pinene and limonene and, to a lesser extent, of sesquiterpenes.

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“…Our results support previous studies that showed that caryolan-1-ol was released by specific Streptomyces strains , including S. griseus [ 19 , 21 ]. In addition, caryolan-1-ol has been found in several plants and fungi [ 22 – 28 ]. These types of caryolan-1-ol can consist of 32 enantiomers, but only three have been documented: (+)-caryolan-1-ol ( S. griseus ), (−)-caryolan-1-ol ( Zingiber officinale and Hardwickia pinnata ) and 1R-caryolan-1-ol ( Aspergillus niger ).…”

Section: Discussionmentioning

confidence: 99%

Caryolan-1-ol, an antifungal volatile produced byStreptomycesspp., inhibits the endomembrane system of fungi

et al. 2017

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Streptomyces spp. have the ability to produce a wide variety of secondary metabolites that interact with the environment. This study aimed to discover antifungal volatiles from the genus Streptomyces and to determine the mechanisms of inhibition. Volatiles identified from Streptomyces spp. included three major terpenes, geosmin, caryolan-1-ol and an unknown sesquiterpene. antiSMASH and KEGG predicted that the volatile terpene synthase gene clusters occur in the Streptomyces genome. Growth inhibition was observed when fungi were exposed to the volatiles. Biological activity of caryolan-1-ol has previously not been investigated. Fungal growth was inhibited in a dose-dependent manner by a mixture of the main volatiles, caryolan-1-ol and the unknown sesquiterpene, from Streptomyces sp. S4–7. Furthermore, synthesized caryolan-1-ol showed similar antifungal activity. Results of chemical-genomics profiling assays showed that caryolan-1-ol affected the endomembrane system by disrupting sphingolipid synthesis and normal vesicle trafficking in the fungi.

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Composition and antimicrobial activity of the essential oil from AlgerianWarionia saharaeBenth. & Hook.

Cited by 4 publications

References 14 publications

Thymyl esters derivatives and a new natural product modhephanone from Pulicaria mauritanica Coss. (Asteraceae) root oil

Thymyl esters derivatives and a new natural product modhephanone from Pulicaria mauritanica Coss. (Asteraceae) root oil

Composition and Chemical Variability of the Cone Oil from Algerian Tetraclinis articulata

Caryolan-1-ol, an antifungal volatile produced byStreptomycesspp., inhibits the endomembrane system of fungi

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