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Evaluation of biological activities of two essential oils as a safe environmental bioinsecticides: case of Eucalyptus globulus and Rosmarinus officinalis

Ainane Ayoub, Abdoul-Latif Fatouma M., Abdoul-Latif Talal M., Ainane Tarik

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2020

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Vol. 29, No. 4

544--556

EN

All works of this article were conducted to investigate chemical composition and insecticidal and antimicrobial properties of Eucalyptus globulus and Rosmarinus officinalis essential oils isolated by hydro-distillation of its aerial parts. Analysis of the essential oils on the basis of gas chromatography and mass spectrometry (GC/FID and GC/MS) revealed the presence of 82 organic volatiles representing 98.63% of the total constituents of Eucalyptus globulus and the presence of 45 organic volatiles representing 98.53% of the total constituents of Rosmarinus officinalis. The major compounds for Eucalyptus globulus were estragole (28.14%), terpinolene (7.12%), 1,4-hexadiene-5-methyl-3-(1-methylethylidene) (7.01%), linalool (5.54%) and furfural (4.66%) and for Rosmarinus officinalis were (-)-camphor (31.16%) and ß-caryophyllene (18.55%), 3,4-dimethyl-(Z,Z)-2,4-Hexadiene (9.08%), ?-fenchene (4.67%), cis-verbenone (4.33%) and Bornyl acetate (3.4%). The efficacy of the two essential oils was evaluated on the insect pests Sitophilus granarius of wheat and was remarkable with lethal doses of 50% tending towards 1 µL·cm–3. The broth microdilution method as a complementary test was conducted to test the antimicrobial activity of the essential oil against: Staphylococcus aureus, Enterococcus faecium, Listeria monocytogenes, Bacillus subtilis, Escherichia coli, Yersinia enterocolitica, Pseudomonas aeruginosa and Candida albicans, further for the two oils of shows promising activity against all strains.

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Effect of gamma ray irradiation on chemical composition, antioxidant, antimicrobial, and insecticidal activities of Thymus pallescens essential oil

Alloun K., Benchabane O., Hazzit M., Mouhouche F., Baaliouamer A., Chikhoune A., Benchabane A.

Acta Chromatographica

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2019

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Vol. 31, no. 1

57--62

EN

The essential oils isolated by hydrodistillation from Thymus pallescens de Noé dried leaves exposed to γ-irradiation at dose levels of 0, 5, 10, 20, and 30 kGy were analyzed by gas chromatography–flame ionization detector (GC–FID) and GC–mass spectrometry (MS) and tested for their antioxidant, antimicrobial, and insecticidal activities. No qualitative change was observed in the chemical composition. Carvacrol (81.8–85.7%) was the most prominent component. Gamma-irradiation at 20 kGy affects quantitatively some components. Antioxidant activity was evaluated by four different test systems, namely, inhibition of lipid peroxidation (thiobarbituric acid reactive substance, TBARS), ferric reducing power, and scavenging of radicals DPPH• and ABTS•+. In all systems, irradiated oils at 20 and/or 30 kGy showed the most antioxidant efficiency. Overall, the antimicrobial activity conducted against seven microorganisms revealed no significant changes according to the radiation dose. Fumigation bioassays and contact method against confused flour beetle Tribolium confusum revealed that the oil irradiated at 20 kGy had highest insecticidal activity. The results showed that gamma-irradiation of T. pallescens could be not only beneficial safe decontamination perspective but also as an improvement factor of some of its properties.

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Chemical Constituents and Insecticidal Activity of Senna italica Mill. from the Sudan

Yagi S., El Tigani S., Ali M., Elkhidir I., Mohammed A. M. A.

International Letters of Chemistry, Physics and Astronomy

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2013

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Vol. 9, iss. 2

146-151

EN

The chemical constituents and insecticidal activity of the pods of Senna italica (Caesalpiniaceae, Fabaceae) were investigated. From the chloroform extract of pods, physcion, chrysophanol, chrysophanol-10,10′-bianthrone, chrysophanol-physcion bianthrone and chrysophanol-isophyscion bianthrone, were isolated and characterized using different spectral methods. The GC-MS of the n-hexane extract revealed that the major chemical constituents of the oil were 2,6,-di-sec-butylphenol (36.69 %), di-n-octylphthalate (12.06 %), eicosane (5.46 %), tetratriacontane (4.87 %) and 2,2'-methylenebis[6-(1,1-dimethyl)-4-methylphenol (4.18 %). The n-hexane extract showed potent insecticidal activity (100 %) against Callosbruchus analis F. This study suggests that S. italica pods cannot be a source of sennosides but for other bioactive compounds.

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Porównanie aktywności biologicznej mirystycyny syntetycznej i naturalnej w badaniach na musze domowej (Musca domestica L.) i karaczanie wschodnim (Blatta orientalis)

Świech K., Połeć I.

Chemik

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2013

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Vol. 67, nr 11

1115-1120

PL

Celem pracy było określenie i porównanie aktywności biologicznej mirystycyny otrzymanej syntetycznie oraz mirystycyny wyodrębnionej z materiału roślinnego. Za źródło mirystycyny „naturalnej” posłużyły nasiona i liście pietruszki odmiany Haldblange Berlińska. Badania aktywności bójczej mirystycyny „naturalnej” i syntetycznej przeprowadzono na musze domowowej (Musca domestica L) i karaczanie wschodnim (Blatta orientalis). Mirystycyna syntetyczna wykazała dużą aktywność owadobójczą w stosunku do badanych bioindykatorów. Wyodrębnione z nasion i liści pietruszki próbki mirystycyny „naturalnej” okazały się mniej aktywne biologicznie.

EN

This study was conducted to investigate and compare biological activity of synthetic myristicin and myristicin isolated from a plant material. The source of „natural” myristicin were seeds and leaves of parsley variety Berliner Half-Long. Biological tests of insecticidal efficiency of synthetic and natural myristicin were conducted against housefly (Musca domestica L) and oriental cockroach (Blatta orientalis). Synthetic myristicin was found more active as insecticide against tested bio-indicators. The biological efficiency of natural myristicin obtained from parsley seeds and leaves was much lower.