Chemical Composition and Biological Activities of Essential Oils of Eremanthus erythropappus (DC) McLeisch (Asteraceae)

The use of plants as therapeutic agents is part of the traditional medicine that is practiced by many indigenous communities in Ecuador. The aim of this study was to update a review published in 2016 by including the studies that were carried out in the period 2016–July 2021 on about 120 Ecuadorian medicinal plants. Relevant data on raw extracts and isolated secondary metabolites were retrieved from different databases, resulting in 104 references. They included phytochemical and pharmacological studies on several non-volatile compounds, as well as the chemical composition of essential oils (EOs). The tested biological activities are also reported. The potential of Ecuadorian plants as sources of products for practical applications in different fields, as well the perspectives of future investigations, are discussed in the last part of the review.

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Comparative study on the chemical composition and biological activities of the essential oils of three Lagochilus species collected from Uzbekistan

Natural Product Research ◽

10.1080/14786419.2019.1655417 ◽

2019 ◽

pp. 1-5 ◽

Cited By ~ 1

Author(s):

Davlat Kh. Akramov ◽

Gokhan Zengin ◽

Sun Chul Kang ◽

Komiljon Sh. Tojibaev ◽

Mohamad Fawzi Mahomoodally ◽

...

Keyword(s):

Chemical Composition ◽

Comparative Study ◽

Essential Oils ◽

Biological Activities

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Chemical Composition and Antifungal Activity of the Essential Oils of Schinus weinmannifolius Collected in the Spring and Winter

Natural Product Communications ◽

10.1177/1934578x1400900940 ◽

2014 ◽

Vol 9 (9) ◽

pp. 1934578X1400900

Author(s):

Camila Hernandes ◽

Silvia H. Taleb-Contini ◽

Ana Carolina D. Bartolomeu ◽

Bianca W. Bertoni ◽

Suzelei C. França ◽

...

Keyword(s):

Antimicrobial Activity ◽

Chemical Composition ◽

Minimum Inhibitory Concentration ◽

Antifungal Activity ◽

Essential Oil ◽

Essential Oils ◽

Inhibitory Concentration ◽

Biological Activities ◽

Antimicrobial Action ◽

Pharmacological Profile

Reports on the chemical and pharmacological profile of the essential oil of Schinus weinmannifolius do not exist, although other Schinus species have been widely investigated for their biological activities. This work aimed to evaluate the chemical composition and antimicrobial activity of the essential oil of S. weinmannifolius collected in the spring and winter. The essential oils were extracted by hydrodistillation, analyzed by GC/MS and submitted to microdilution tests, to determine the minimum inhibitory concentration. The oils displayed different chemical composition and antimicrobial action. Bicyclogermacrene and limonene predominated in the oils extracted in the winter and spring, respectively, whereas only the latter oil exhibited antifungal activity.

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Comparison of Yield Chemical Composition and Biological Activities of Essential Oils Obtained from Thymus pallidus and Thymus satureioides Coss. Grown in Wild and Cultivated Conditions in Morocco

Journal of Essential Oil Bearing Plants ◽

10.1080/0972060x.2019.1708216 ◽

2020 ◽

Vol 23 (1) ◽

pp. 1-14

Author(s):

Salah eddine El-Bakkal ◽

Safia Zeroual ◽

Mohammad Elouazkiti ◽

Mounir Mansori ◽

Hafida Bouamama ◽

...

Keyword(s):

Chemical Composition ◽

Essential Oils ◽

Biological Activities ◽

Thymus Satureioides

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Chemical composition and biological activities of endemic Tripleurospermum conoclinium (Boiss. & Balansa) Hayek essential oils

Flavour and Fragrance Journal ◽

10.1002/ffj.3610 ◽

2020 ◽

Vol 35 (6) ◽

pp. 713-721

Author(s):

Huseyin Servi ◽

Ali Sen ◽

Ahmet Dogan

Keyword(s):

Chemical Composition ◽

Essential Oils ◽

Biological Activities

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Chemical composition and biological activities of leaf and fruit essential oils from Eucalyptus camaldulensis

Zeitschrift für Naturforschung C ◽

10.1515/znc-2016-0033 ◽

2017 ◽

Vol 72 (11-12) ◽

pp. 483-489 ◽

Cited By ~ 5

Author(s):

Gulden Dogan ◽

Nazan Kara ◽

Eyup Bagci ◽

Seher Gur

Keyword(s):

Gas Chromatography ◽

Chemical Composition ◽

Essential Oils ◽

Biological Activities ◽

Eucalyptus Camaldulensis ◽

Gas Chromatography Mass Spectrometry ◽

Diffusion Method ◽

Leaf Oil ◽

Fruit Oil ◽

Antibacterial And Antifungal

AbstractThe chemical composition of the essential oils from the leaves and fruit ofEucalyptus camaldulensisgrown in Mersin, Turkey was analyzed using gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) techniques. The biological activities (antibacterial and antifungal) were examined using the agar well diffusion method. The main leaf oil constituents werep-cymene (42.1%), eucalyptol (1,8-cineole) (14.1%), α-pinene (12.7%) and α-terpinol (10.7%). The main constituents of the fruit oil were eucalyptol (1,8-cineole) (34.5%),p-cymene (30.0%), α-terpinol (15.1%) and α-pinene (9.0%). Our results showed that both types of oils are rich in terms of monoterpene hydrocarbons and oxygenated monoterpenes. The leaf and fruit essential oils ofE. camaldulensissignificantly inhibited the growth of Gram-positive (Staphylococcus aureusandBacillus subtilis) and Gram-negative (Escherichia coliandStreptococcussp.) bacteria (p<0.05). The oils also showed fungicidal activity againstCandida tropicalisandC. globrata. Leaf essential oils showed more activity than fruit essential oils, probably due to the higher p-cymene concentration in leaves.

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Chemical Composition, Antimicrobial and Insecticidal Activities of Essential Oils of Discarded Perfume Lemon and Leaves (Citrus Limon (L.) Burm. F.) as Possible Sources of Functional Botanical Agents

Frontiers in Chemistry ◽

10.3389/fchem.2021.679116 ◽

2021 ◽

Vol 9 ◽

Author(s):

Panpan Wu ◽

Xiaowen Tang ◽

Rongchao Jian ◽

Jiahao Li ◽

Maoyu Lin ◽

...

Keyword(s):

Chemical Composition ◽

Essential Oils ◽

Mosquito Control ◽

Biological Activities ◽

Adult Mosquito ◽

Citrus Limon ◽

Bacterial Strains ◽

Inhibition Zones ◽

Biological Assessments ◽

Dose Dependent

Two essential oils were isolated from discarded perfume lemon and leaves (Citrus limon (L.) Burm. F.) by hydro-distillation with good yield (0.044% for perfume lemon and 0.338% for leaves). Their biological activities were evaluated against five selected bacterial strains and Aedes albopictus (Ae. albopictus, Diptera: Culicidae). Chemical composition indicated that both essential oils were rich in essential phytochemicals including hydrocarbons, monoterpenes and sesquiterpene. These constituents revealed some variability among the oils displaying interesting chemotypes (R)-(+)-limonene (12.29–49.63%), citronellal (5.37–78.70%) and citronellol (2.98–7.18%). The biological assessments proved that the two essential oils had similar effect against bacterial (inhibition zones diameter ranging from 7.27 ± 0.06 to 10.37 ± 0.15 mm; MICs and MBCs ranging from 1.6 to 6.4 mg/mL); against Ae. albopictus larvae (LC50 ranging from 384.81 to 395.09 ppm) and adult mosquito (LD50 ranging from 133.059 to 218.962 μg/cm2); the activity of the two chemotypes ((R)-(+)-limonene and citronellal): larvae (LC50 ranging from 267.08 to 295.28 ppm), which were all presented in dose-dependent manners. Through this work, we have showcased that recycling and reusing of agriculture by-products, such as discarded perfume lemon and leaves can produce eco-friendly alternatives in bacterial disinfectants and mosquito control product.

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Chemical Composition and Biological Activities of Essential Oils from the Leaves, Stems, and Roots of Kadsura coccinea

Molecules ◽

10.3390/molecules26206259 ◽

2021 ◽

Vol 26 (20) ◽

pp. 6259

Author(s):

Tianming Zhao ◽

Chao Ma ◽

Guofei Zhu

Keyword(s):

Gas Chromatography ◽

Chemical Composition ◽

Essential Oils ◽

Antioxidant Activities ◽

Biological Activities ◽

Radical Scavenging ◽

Cholinesterase Inhibition ◽

Pharmaceutical Industries ◽

Kadsura Coccinea ◽

Radical Scavenging Assay

The chemical composition and biological activities of the essential oils from the leaves, stems, and roots of Kadsura coccinea (K. coccinea) were investigated. The essential oils were extracted by hydro distillation and analyzed by gas chromatography mass spectrometry (GC-MS) and gas chromatography with flame ionization detector (GC-FID). Antioxidant activities of the essential oils were examined with DPPH radical scavenging assay, ABTS cation radical scavenging assay, and ferric reducing antioxidant power assay. Antimicrobial activities were evaluated by determining minimum inhibitory concentrations (MIC) and minimum microbiocidal concentrations (MMC). Acetylcholinesterase and butyrylcholinesterase inhibitory activity of the essential oils were also tested. A total of 46, 44, and 47 components were identified in the leaf, stem, and root oils, representing 95.66%, 97.35%, and 92.72% of total composition, respectively. The major compounds of three essential oils were α-pinene (16.60–42.02%), β-pinene (10.03–18.82%), camphene (1.56–10.95%), borneol (0.50–7.71%), δ-cadinene (1.52–7.06%), and β-elemene (1.86–4.45%). The essential oils were found to have weak antioxidant activities and cholinesterase inhibition activities. The essential oils showed more inhibitory effects against Staphylococcus aureus (S. aureus) than those of other strains. The highest antimicrobial activity was observed in the root oil against S. aureus, with MIC of 0.78 mg/mL. Therefore, K. coccinea essential oils might be considered as a natural antibacterial agent against S. aureus with potential application in food and pharmaceutical industries.

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