Quantitative and Qualitative Variations in Eucalyptus Essential Oils Depending on Species and the Cultivation Location DOI Creative Commons

Sonia Ben Rabeh,

Emna Zouaoui,

Imen Chemlali

и другие.

Natural Product Communications, Год журнала: 2025, Номер 20(4)

Опубликована: Апрель 1, 2025

Objectives: This study examined the impact of various abiotic factors, specifically temperature and precipitation, on yield composition (volatile profile) essential oils (EO) from four Eucalyptus species, including salmonophloia , torquata, lesouefii astringens . Additionally, antimicrobial properties these EO were assessed. Methods: The species collected five arboreta in Tunisia belonging to two climatic conditions (arid semi-arid). EOs extracted leaves using hydrodistillation technique analyzed by gas chromatography coupled with mass spectrometry (GC-MS). activity was evaluated measuring diameters inhibition zones agar well diffusion method determining minimum inhibitory concentrations (MICs). Results: varied 0.12% 4.63% (w/w, dry weight) depending plant's growing location. 1,8-cineole (29.71% 67.16%) far major compounds E. salmonophloia, however torquata torquatone chemotype (33.41% 44.78%). In general, aridity increased extraction EO. Higher lower rainfall enhanced production key such as, ɑ-pinene, however, it decreases others like spathulenol viridiflorol. A notable observed against all microbial strains tested, demonstrating both microbicidal microbiostatic effects, particularly Escherichia coli Serratia marcescens Candida tropicalis derived studied represent a valuable source bioactive compounds, 1,8-cineole, spathulenol, β-eudesmol. These contribute oils’ significant efficacy, offering additional advantage being natural product. Conclusion: Our findings reinforce notion that environmental factors may serve as limiting factor availability for medicinal industrial applications.

Язык: Английский

EVALUATION OF INSECTICIDAL POTENTIAL OF SILVER NANOPARTICLES SYNTHESIZED BY USING RIVER RED GUM (EUCALYPTUS CAMALDULENSIS) LEAF EXTRACT DOI Creative Commons
Anwar A. Khan,

Shehzad Sikandar,

Samiyah Tasleem

и другие.

Опубликована: Янв. 17, 2025

Background: Aphids, particularly Myzus persicae, are significant agricultural pests, known for their rapid reproduction and ability to cause severe damage crops, both directly by feeding indirectly as virus vectors. The extensive use of chemical pesticides control aphids poses risks human health the environment. Nanotechnology, silver nanoparticles, has emerged a promising eco-friendly alternative due its potent insecticidal properties. Objective: This study aimed synthesize nanoparticles using Eucalyptus camaldulensis leaf extract evaluate activity against under controlled conditions. Methods: Silver were synthesized through green synthesis approach. Fresh E. leaves boiled in deionized water prepare extract, which served natural reducing stabilizing agent. nitrate was added 9:1 ratio, formation confirmed color change from pale yellow dark brown. characterized BT-90 nano laser particle size analyzer, revealing an average 31.5 nm. For bioassay, leaf-dipping method employed, with three concentrations (original solution, 3:1, 1:1 dilutions) tested on aphids. A group treated water, mortality observed over 24 hours. Statistical analyses conducted one-way ANOVA Probit Analysis. Results: Complete (100%) all groups within LT50 values original 3:1 dilution, dilution recorded 11.0 ± 1.67, 12.4 1.85, 18.6 2.01 hours, respectively. exhibited minimal rate 6.7%. Conclusion: demonstrated highlighting potential pesticides.

Язык: Английский

Процитировано

0
Quantitative and Qualitative Variations in Eucalyptus Essential Oils Depending on Species and the Cultivation Location DOI Creative Commons

Sonia Ben Rabeh,

Emna Zouaoui,

Imen Chemlali

и другие.

Natural Product Communications, Год журнала: 2025, Номер 20(4)

Опубликована: Апрель 1, 2025

Objectives: This study examined the impact of various abiotic factors, specifically temperature and precipitation, on yield composition (volatile profile) essential oils (EO) from four Eucalyptus species, including salmonophloia , torquata, lesouefii astringens . Additionally, antimicrobial properties these EO were assessed. Methods: The species collected five arboreta in Tunisia belonging to two climatic conditions (arid semi-arid). EOs extracted leaves using hydrodistillation technique analyzed by gas chromatography coupled with mass spectrometry (GC-MS). activity was evaluated measuring diameters inhibition zones agar well diffusion method determining minimum inhibitory concentrations (MICs). Results: varied 0.12% 4.63% (w/w, dry weight) depending plant's growing location. 1,8-cineole (29.71% 67.16%) far major compounds E. salmonophloia, however torquata torquatone chemotype (33.41% 44.78%). In general, aridity increased extraction EO. Higher lower rainfall enhanced production key such as, ɑ-pinene, however, it decreases others like spathulenol viridiflorol. A notable observed against all microbial strains tested, demonstrating both microbicidal microbiostatic effects, particularly Escherichia coli Serratia marcescens Candida tropicalis derived studied represent a valuable source bioactive compounds, 1,8-cineole, spathulenol, β-eudesmol. These contribute oils’ significant efficacy, offering additional advantage being natural product. Conclusion: Our findings reinforce notion that environmental factors may serve as limiting factor availability for medicinal industrial applications.

Язык: Английский

Процитировано

0