Chemical Composition of the Essential Oils of four Eucalyptus Species (Myrtaceae) from Egypt

El-Mageed, A.A. Abd; Osman, Ahmed K.; Tawfik, A.Q.; Mohammed, Hassan Abdulla

doi:10.3923/rjphyto.2011.115.122

Cited by 21 publications

(2 citation statements)

References 18 publications

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“…However, the major component of the leaves of C. citriodora grown at the State of Ceará, Brazil, was β -citronellal (71.7%) [49]. In contrast, 6-octenal (77.1%) was found to be a major component in the EO of C. citriodora grown in Nigeria [26], and α -pinene (38.6%), β -pinene (25.6%), sabinene (19.6%), and α -thujene (11.9%) were the major compounds contained in the EO of C. citriodora leaves from Paschim Vihar (New Delhi) [29]. Neo -isopulegol, citronellal, iso -isopulegol, citronellol, citronellyl acetate, and E -caryophyllene were the primary components in the EO of the plant from Benin [50].…”

Section: Discussionmentioning

confidence: 99%

“…However, 6-octenal was reported as the major constituent in the leaf oil of C. citriodora from Nigeria [25]; α -pinene, β -pinene, sabinene, and α -thujene were reported to be minor constituents [28]. 3-Hexen-1-ol, cis -geraniol, citronellol acetate, 5-hepten-1-ol, 2,6-dimethyl, and citronellal were the major components in the leaf EO of C. citriodora grown in Zoological Garden in Giza-Egypt [29]. The EO of C. citriodora (lemon-scented eucalyptus) showed a wide spectrum of antifungal activity as well as activity against various pathogenic bacteria and yeasts [22, 30–39] resulting in that the EOs of some plants, including C. citriodora, have significant insecticidal activity against Sitophilus zeamais , however, 50% of the efficacy was lost 8 days after treatment.…”

Section: Introductionmentioning

confidence: 99%

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Bioactivity of essential oils extracted from Cupressus macrocarpa branchlets and Corymbia citriodora leaves grown in Egypt

Salem

Elansary

Ali

et al. 2018

BMC Complement Altern Med

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BackgroundCupressus macrocarpa Hartw and Corymbia citriodora (Hook.) K.D. Hill & L.A.S. Johnson, widely grown in many subtropical areas, are used for commercial purposes, such as in perfumery, cosmetics, and room fresheners. Their potential as a source of antimicrobial compounds may be useful in different applications.MethodsThe chemical composition of essential oils (EOs) from C. macrocarpa branchlets and C. citriodora leaves was analyzed by using gas chromatography–mass spectrometry (GC/MS). Antibacterial and antifungal activities were assessed by the micro-dilution method to determine the minimum inhibitory concentrations (MICs), and minimum fungicidal concentrations (MFCs), and minimum bactericidal concentrations (MBCs). Further, the antioxidant capacity of the EOs was determined via 2,2′-diphenypicrylhydrazyl (DPPH) and β-carotene-linoleic acid assays.ResultsTerpinen-4-ol (23.7%), α-phellandrene (19.2%), α-citronellol (17.3%), and citronellal were the major constituents of EO from C. macrocarpa branchlets, and α-citronellal (56%), α-citronellol (14.7%), citronellol acetate (12.3%), isopulegol, and eucalyptol were the primary constituents of EO from C. citriodora leaves. Antibacterial activity with MIC values of EO from C. citriodora leaves was ranged from 0.06 mg/mL to 0.20 mg/mL, and MBC from 0.12 mg/mL against E. coli to 0.41 mg/mL. EO from C. macrocarpa branchlets showed less activity against bacterial strains. The MIC values against tested fungi of the EO from C. citriodora ranged from 0.11 to 0.52 mg/mL while for EO from C. macrocarpa from 0.29 to 3.21 mg/mL. The MIC and MFC values of EOs against P. funiculosum were lower than those obtained from Ketoconazole (KTZ) (0.20; 0.45; 0.29 and 0.53 mg/mL, respectively, vs 0.21 and 0.41 mg/mL. Antioxidant activity of the EO from C. citriodora was higher than that of the positive control but lower than that of the standard butylhydroxytoluene (BHT) (IC50 = 5.1 ± 0.1 μg/mL).ConclusionThe results indicate that the EO from Egyptian trees such as C. citriodora leaves may possesses strong bactericidal and fungicidal activities and can be used as an agrochemical for controlling plant pathogens and in human disease management which will add crop additive value.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bioactivity of essential oils extracted from Cupressus macrocarpa branchlets and Corymbia citriodora leaves grown in Egypt

Salem

Elansary

Ali

et al. 2018

BMC Complement Altern Med

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Biological, medicinal and toxicological significance of Eucalyptus leaf essential oil: a review

et al. 2017

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The genus Eucalyptus L'Heritier comprises about 900 species, of which more than 300 species contain volatile essential oil in their leaves. About 20 species, within these, have a high content of 1,8-cineole (more than 70%), commercially used for the production of essential oils in the pharmaceutical and cosmetic industries. However, Eucalyptus is extensively planted for pulp, plywood and solid wood production, but its leaf aromatic oil has astounding widespread biological activities, including antimicrobial, antiseptic, antioxidant, chemotherapeutic, respiratory and gastrointestinal disorder treatment, wound healing, and insecticidal/insect repellent, herbicidal, acaricidal, nematicidal, and perfumes, soap making and grease remover. In the present review, we have made an attempt to congregate the biological ingredients of leaf essential oil, leaf oil as a natural medicine, and pharmacological and toxicological values of the leaf oil of different Eucalyptus species worldwide. © 2017 Society of Chemical Industry.

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Eucalyptus erythrocorys L. notes ethnobotanique et phytopharmacologique

Ghnaya¹,

Hanana

Kaderi³

et al. 2015

Phytothérapie

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Chemical Composition of the Essential Oils of four Eucalyptus Species (Myrtaceae) from Egypt

Cited by 21 publications

References 18 publications

Bioactivity of essential oils extracted from Cupressus macrocarpa branchlets and Corymbia citriodora leaves grown in Egypt

Bioactivity of essential oils extracted from Cupressus macrocarpa branchlets and Corymbia citriodora leaves grown in Egypt

Biological, medicinal and toxicological significance of Eucalyptus leaf essential oil: a review

Eucalyptus erythrocorys L. notes ethnobotanique et phytopharmacologique

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