Chemical Composition of Aerial Parts Essential Oils from Six Endemic Malagasy Helichrysum Species

Rabehaja, Delphin J. R.; Bezert, Guillaume; Rakotonandrasana, Stéphan; Ramanoelina, Panja A.R.; Andrianjara, Charles; Bighelli, Ange; Tomi, Félix; Paoli, Mathieu

doi:10.3390/plants9020265

Cited by 5 publications

(5 citation statements)

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“…As reported by Rabehaja et al [18], Malagasy Helichrysum EOs exhibited an important chemical variability. The major components of EOs vary according to the species: for examples, α-pinene for H. benthamii, caryophyllene for H. indutum and H. bojerianum [18] and 1.8-cineole for H. dubardii [18], H. gymnocephalum and H. bracteiferum [17].…”

Section: Discussionmentioning

confidence: 58%

“…H. bracteiferum is considered as a stimulating plant and its ashes are used as a topical on excavated syphilitic wounds [13]. Some Malagasy Helichrysum species including H. faradifani [12,14,15], H. bracteiferum [16,17], H. benthamii, H. dubardii, H. indutum, H. bojerianum, H. diotoides and H. hirtum [18], H. cordifolium, H. hypnoides, H. rusillonii [19], H. gymnocephalum and H. selaginifolium [17], H. aphelexioides, H. triplinerve, H. achyroclinoides, H. lecomtei, H. retrorsum [20] were already studied. However, works focused on the chemical composition of essential oils.…”

Section: Introductionmentioning

confidence: 99%

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Chemical composition and antimicrobial properties of the essential oil from the leaves of Helichrysum ibityense R.Vig. & Humbert (Asteraceae)

Razafiarimanga¹,

Judicael²,

Randriamampianina³

et al. 2021

GSC Biol. and Pharm. Sci.

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The present work aimed to study the composition and antimicrobial properties of the essential oil of Helichrysum ibityense leaves (HIEO). HIEO was extracted by hydrodistillation from fresh leaves with a yield of 1.9%. It had a relative density of 0.9247 at 20℃, a refractive index of 1.4706, an optical rotation of -0°33, an acid index of 2.10 and an ester index of 54. Gas chromatography analysis/flame ionisation detection of HIEO had identified 17 components, representing more than 99.54% of the overall composition of the HIEO including 1.8-cineole (69.46%) the major component, α-terpinene (4.62%), β-caryophyllene (4.39%), α-pinene (4.13%), β-pinene (2.96%), p-cymene (2.39%) and γ-terpinene (2.16%). The HIEO antimicrobial activity was tested against nine pathogenic bacteria including Staphylococcus aureus, Staphylococcus pneumoniae, Streptococcus pyogenes, Clostridium perfringens, Bacillus cereus, Pseudomonas aeruginosa, Enterobacter cloacae, Enterobacter aerogenes, Yersinia enterocolitica, and Candida albicans using the Disc diffusion and the Microdilution assays. HIEO exhibited broad activity spectrum and high microbial activity with inhibition zones (IZ) ranging from 12 to 35 mm. On Bacillus cereus, the most sensitive bacterium, its Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) were 9.37 mg/ml and 13.22 mg/ml respectively. With an MBC/MIC ratio of 1.41, HIEO exerted a bactericidal action on Bacillus cereus. When administered orally to mice at 1000 mg/kg body weight, HIEO caused symptoms of intoxication which disappeared after 24 h. These preliminary results revealed HIEO could be used to treat different infectious diseases if its safety will be confirmed.

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Section: Discussionmentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Chemical composition and antimicrobial properties of the essential oil from the leaves of Helichrysum ibityense R.Vig. & Humbert (Asteraceae)

Razafiarimanga¹,

Judicael²,

Randriamampianina³

et al. 2021

GSC Biol. and Pharm. Sci.

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“…The presence of high percentages of caryophyllene oxide is not very common in the genus Helichrysum, even though this compound was reported by Rabehaja, D.J.R. et al for the Malagasy H. benthamii Viguier & Humbert (4.0%) [ 17 ]. These authors also evidenced a similar behaviour with the same species concerning the predominance of sesquiterpenes, with prevalence of the oxygenated ones (73.5%) in H. hirtum Humbert.…”

Section: Resultsmentioning

confidence: 99%

Volatolomics of Three South African Helichrysum Species Grown in Pot under Protected Environment

et al. 2021

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Helichrysum decorum DC, Helichrysum lepidissimum S. Moore, and Helichrysum umbraculigerum are three species traditionally used in the South African medicine. The present work deals with the investigation of the spontaneous emission and the essential oils obtained from these plants cultivated in open field under uniform conditions. Fractions of the volatile organic compounds of the three species were rich in monoterpene hydrocarbons, representing more than 70% of the total composition. Pinene isomers were the most representative compounds: β-pinene in H. decorum (53.0%), and α-pinene in H. lepidissimum (67.9%) and H. umbraculigerum (54.8%). These latter two species evidenced an important amount of sesquiterpene hydrocarbons (SH) especially represented by γ-curcumene (H. lepidissimum) and α- and β-selinene (H. umbraculigerum). On the contrary, in the EOs, sesquiterpenes compounds prevailed, representing more than 64% of the identified fraction to reach more than 82 and 87% in H. umbraculigerum and H. lepidissimum, respectively. Although the chemical classes and their relative abundances were comparable among the three species, the individual compounds of EOs showed large differences. In fact, caryophyllene oxide (26.7%) and γ-curcumene (17.4%) were the main constituents in H. decorum, and H. lepidissimum respectively, while neo-intermedeol (11.2%) and viridiflorol (10.6%) characterized H. umbraculigerum.

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“…Identification of the individual components was carried out as follows: (i) by comparison of their GC retention indices on non-polar and polar columns, with those of reference compounds [ 6 , 7 , 10 ]; (ii) on computer matching against commercial mass spectral libraries [ 7 , 22 , 23 ]; (iii) on comparison of the signals in the 13 C NMR spectra of the samples with those of reference spectra compiled in the laboratory spectral library, with the help of laboratory-made software [ 24 , 25 , 26 ]. This method allowed the identification of individual components of the essential oil at contents as low as 0.4%.…”

Section: Methodsmentioning

confidence: 99%

Extinction Risk Assessment and Chemical Composition of Aerial Parts Essential Oils from Two Endangered Endemic Malagasy Salvia Species

Rakotonandrasana,

Paoli,

Randrianirina

et al. 2023

Plants

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Seven essential oil samples of two endemic species of Malagasy sage, Salvia sessilifolia Baker and Salvia leucodermis Baker, were investigated via GC(RI), GC-MS and 13C NMR spectrometry. In total, 81compounds were identified accounting for 93.5% to 98.7% of the total composition. The main constituents for the both species were (E)-β-caryophyllene (29.2% to 60.1%), myrcene (1.2% to 21.7%), α-humulene (5.2% to 19.7%), (E)-nerolidol (0.8% to 15.5%) and caryophyllene oxide (1.4% to 10.8%). Ethnobotanical survey of 46 informants revealed that decoctions of leafy twigs and chewed leaves were usually used. Due to the repeated fires, over-harvesting and grazing, the populations of S. sessilifolia and S. leucodermis are drastically fragmented. These risk factors led to threats to the habitats of the target species. Salvia sessilifolia Baker and Salvia leucodermis Baker are proposed to be classified as endangered species.

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Chemical Composition of Aerial Parts Essential Oils from Six Endemic Malagasy Helichrysum Species

Cited by 5 publications

References 20 publications

Chemical composition and antimicrobial properties of the essential oil from the leaves of Helichrysum ibityense R.Vig. & Humbert (Asteraceae)

Chemical composition and antimicrobial properties of the essential oil from the leaves of Helichrysum ibityense R.Vig. & Humbert (Asteraceae)

Volatolomics of Three South African Helichrysum Species Grown in Pot under Protected Environment

Extinction Risk Assessment and Chemical Composition of Aerial Parts Essential Oils from Two Endangered Endemic Malagasy Salvia Species

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