Chemical composition, antioxidant and antibacterial activities of the leaf essential oil of Juglans regia L. and its constituents

Phytomedicine ◽  
2012 ◽  
Vol 19 (13) ◽  
pp. 1185-1190 ◽  
Author(s):  
Manzoor A. Rather ◽  
Bilal A. Dar ◽  
Mohd Yousuf Dar ◽  
Bilal A. Wani ◽  
Wajahat A. Shah ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Juglans Regia ◽  
Antibacterial Activities ◽  
Leaf Essential Oil

Medicinal Plants: Antibacterial Effects and Chemical Composition of Essential Oil of Foeniculum vulgare

2017 ◽  
Vol 8 (01) ◽  
Author(s):  
Azadeh Foroughi ◽  
Pouya Pournaghi ◽  
Fariba Najafi ◽  
Akram Zangeneh ◽  
Mohammad Mahdi Zangeneh ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Medicinal Plants ◽  
Essential Oil ◽  
Antibacterial Properties ◽  
Screen Test ◽  
Antibacterial Activities ◽  
Gas Chromatography Mass Spectrometry ◽  
Resistant Bacteria ◽  
Antibacterial Effects ◽  
Foeniculum Vulgare

Medicinal plants are considered modern resources for producing agents that could act as alternatives to antibiotics in demeanor of antibiotic-resistant bacteria. The aim of the study was to evaluate the chemical composition and antibacterial activities of essential oil of Foeniculum vulgare (FV) against Pseudomonas aeruginosa and Bacillus subtilis. Gas chromatography mass spectrometry was done to specify chemical composion. As a screen test to detect antibacterial properties of the essential oil, agar disk and agar well diffusion methods were employed. Macrobroth tube test was performed to determinate MIC. The results indicated that the most substance found in FV essential oil was Trans-anethole (47.41 %), also the essential oil of FV with 0.007 g/ml concentration has prevented P. aeruginosa and with 0.002 g/ml concentration has prevented B. subtilis from the growth. Thus, the research represents the antibacterial effects of the medical herb on test P. aeruginosa and B. subtilis. We believe that the article provide support to the antibacterial properties of the essential oil. The results indicate the fact that the essential oil from the plant can be useful as medicinal or preservatives composition.

Chemical Composition, in vitro Trypanocidal and Antibacterial Activities of the Essential Oil from the Dried Leaves of Eugenia dysenterica DC from Brazil

2019 ◽  
Vol 22 (2) ◽  
pp. 347-355 ◽  
Author(s):  
Larissa Sousa Santos ◽  
Cassia Cristina Fernandes Alves ◽  
Elisângela Barbosa Borges Estevam ◽  
Carlos Henrique Gomes Martins ◽  
Thayná de Souza Silva ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Antibacterial Activities ◽  
Eugenia Dysenterica

scholarly journals Chemical composition, antioxidant activities and antibacterial activities of essential oil from Erythrina caffra Thunb. growing in South Africa

Heliyon ◽  
2021 ◽  
pp. e07244
Author(s):  
Olubunmi A. Wintola ◽  
Aderonke A. Olajuyigbe ◽  
Anthony J. Afolayan ◽  
Roger M. Coopoosamy ◽  
Olufunmiso O. Olajuyigbe
Keyword(s):  
South Africa ◽  
Chemical Composition ◽  
Essential Oil ◽  
Antioxidant Activities ◽  
Antibacterial Activities

Chemical Composition, Antioxidant and Antibacterial Activities of Essential Oil From Cymbopogon densiflorus (Steud.) Stapf Flowers

2021 ◽  
Vol 24 (1) ◽  
pp. 40-52
Author(s):  
Paula V.D. Spencer ◽  
Silvia H. Libardi ◽  
Fernanda F.G. Dias ◽  
Wellington da S. Oliveira ◽  
Ronaldo L. Thomasini ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Antibacterial Activities

scholarly journals Chemical composition and insecticidal activity of Aeollanthus pubescens Benth leaf essential oil on the malaria vector Anopheles gambiae (Diptera: Culicidae)

2020 ◽  
Author(s):  
Roméo Barnabé Bohounton ◽  
Luc Salako Djogbénou ◽  
Oswald Yédjinnavênan Djihinto ◽  
Oronce Sedjro-Ludolphe Dedome ◽  
Pierre Marie Sovegnon ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Anopheles Gambiae ◽  
Malaria Vector ◽  
Larval Mortality ◽  
Alternative Approach ◽  
Leaf Essential Oil ◽  
Republic Of Benin ◽  
The Republic ◽  
Major Malaria Vector

AbstractThe use of synthetic insecticides is responsible for many cases of resistance in insects. Therefore, the use of natural molecules of ecological interest with insecticidal properties turns out to be an alternative approach to the use of synthetic insecticides. This study aims at investigating the larvicidal, adulticidal activity and the composition of the essential oil of Aeollanthus pubescens Benth on the major malaria vector Anopheles gambiae.The leaves of Aeollanthus pubescens were collected in the South of the Republic of Benin. Three reference strains of Anopheles gambiae s.s. such as Kisumu, Kiskdr and Acerkis were used. The chemical composition of the essential oil was analysed by gas chromatography coupled to mass spectrometry. Larvae were exposed to the essential oil extract for 24 h. Adult mosquitoes were exposed to the fragment nets coated with the essential oil for 3 min. Larval mortality and adult survivorship were monitored.Fourteen components were identified representing 98.31% of the total of oil. The major components were carvacrol (51.06 %), thymyle acetate (14.01 %) and γ-terpinene (10.60 %). The essential oil has remarkable larvicidal properties with LC50 of 29.26, 22.65, and 28.37 ppm respectively on Kisumu, Acerkis and Kiskdr strains. With the fragment net treated at 165 µg/cm2, the KDT50 of both Acerkis (1.71 s, p < 0.001) and Kiskdr (2.67 s, p < 0.001) individuals were significantly lower than that of Kisumu (3.77 s). The lifespan of the three mosquito strains decreased respectively to one day for Kisumu (p < 0.001), two days for Acerkis (p < 0.001) and three days for Kiskdr (p < 0.001) compared to their control.Our findings show that the Aeollanthus pubescens essential oil is an efficient larvicide and adulticide against malaria vector Anopheles gambiae. This bioinsecticidal activity is a promising discovery for the control of the resistant malaria-transmitting vectors.

scholarly journals Chemical composition and antibacterial activities of essential oils from fruits of Melicope pteleifolia (Champ. Ex Benth.) T.G. Hartley grown in Lam Dong Province, Vietnam

2020 ◽  
Vol 42 (3) ◽  
Author(s):  
Hoang Thi Binh ◽  
Tran Thi Bao Tram ◽  
Do Ngoc Dai ◽  
Vuong Thuy Tien ◽  
Le Minh Tam ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Chemical Composition ◽  
Essential Oil ◽  
Streptococcus Pyogenes ◽  
Antibacterial Properties ◽  
Antibacterial Activities ◽  
Gas Chromatography Mass Spectrometry ◽  
Diffusion Method ◽  
Aerial Parts ◽  
Agar Well Diffusion Method

In the present study, chemical composition and antibacterial properties of essential oil obtained from the aerial parts of the Melicope pteleifolia (Champ. ex Benth.) T.G Hartley in Dalat were evaluated. Essential oil was isolated through hydro-distillation. Twenty-nine constituents comprising 100% of the essential oil were characterized by gas chromatography/mass spectrometry (GC-MS) techniques. The major compounds in the essential oil were (+)-Sabinene (34.73%), Cis-α-bergamotene (13.15%), Z-α-trans-bergamotol (5.28%), β-mycrene (4.98%), and 1,3,6-octatriene, 3,7-dimethyl-(4.71%). Antibacterial activities of Melicope pteleifolia essential oil were investigated against Gram-positive and-negative bacteria. Results showed significant activities against Streptococcus pyogenes and Escherichia coli using an agar well diffusion method. The application of this essential oil in preventing and eliminating bacteria could be useful in fields as medicine and cosmetics. 

scholarly journals Chemical Composition of Cinnamomum verum Leaf and Flower Essential Oils and Analysis of Their Antibacterial, Insecticidal, and Larvicidal Properties

Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6303
Author(s):  
Arunaksharan Narayanankutty ◽  
Krishnaprasad Kunnath ◽  
Ahmed Alfarhan ◽  
Rajakrishnan Rajagopal ◽  
Varsha Ramesh
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Callosobruchus Maculatus ◽  
Sitophilus Oryzae ◽  
Microbial Pathogens ◽  
Traditional Medicines ◽  
Significant Toxicity ◽  
Leaf Essential Oil ◽  
Different Parts

Cinnamomum verum is widely used in traditional medicines, and the different parts of the plant, such as bark, leaves, and flowers, are used for essential oil production. The present study compared the chemical composition of the essential oil of C. verum extracted from the leaves and flowers. In addition, efficacy of these essential oils against the two common pests Sitophilus oryzae and Callosobruchus maculatus was also evaluated. The results indicated the presence of cinnamaldehyde, eugenol, caryophyllene, and linalool in these essential oils, however, at different concentrations. The leaf essential oil was found to be 10–20% more effective as a fumigant against both the pests. Likewise, the leaf essential oil found to repel these pests even at lower concentrations than that of flower essential oil of C. verum. Besides, these essential oils were also effective in controlling the growth of various gram positive and gram negative microbial pathogens and possibly a safeguard for human health. On contrary, both the essential oils were found to be safe for the application on grains, as indicated by their germination potentials. It was also observed that these essential oils do not cause any significant toxicity to guppy fishes, thus confirming their ecological safety for use as a biopesticide.

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