scholarly journals Herbicidal potential of lavender (Lavandula angustifolia Mill.) essential oil components on bristly foxtail (Setaria verticillata (L.) P. Beauv.): Comparison with carvacrol, carvone, thymol and eugenol

2020 ◽  
Vol 72 (2) ◽  
pp. 223-231
Author(s):  
Katerina Koiou ◽  
Ioannis Vasilakoglou ◽  
Kico Dhima
Keyword(s):  
Essential Oil ◽  
Synergistic Effect ◽  
Essential Oils ◽  
Weed Control ◽  
Root Length ◽  
Linalyl Acetate ◽  
Lavandula Angustifolia ◽  
Natural Herbicides ◽  
Setaria Verticillata ◽  
Oil Components

Essential oils are a plentiful source of plant compounds for potential use in the development of natural herbicides. With this in mind, the phytotoxicity of ten major essential oil components of lavender (Lavandula angustifolia Mill.) on the weed species bristly foxtail (Setaria verticillata (L.) P. Beauv.) was determined using a perlite-based Petri-dish bioassay. Their phytotoxicity was also compared with that of well-known phytotoxic essential oil components (carvacrol, thymol, carvone and eugenol) of oregano (Origanum vulgare L.) and clove (Syzygium aromaticum (L.) Merr. & L.M. Perry) essential oils. Potential synergistic or antagonistic effects between carvacrol or eugenol with other components of lavender essential oil were investigated. Regarding the most phytotoxic components, terpinen-4-ol at 80 nL/cm3 completely inhibited the germination and root length of bristly foxtail, displaying similar phytotoxicity to carvone and thymol. Like carvacrol, lavandulol and linalyl acetate caused total (100%) germination and root length reduction of bristly foxtail at 160 nL/cm3, while the same effect was achieved by lavandulyl acetate at 320 nL/cm3. A synergistic effect was also observed when carvacrol or eugenol were combined with ocimene, 3-octanone, ?-terpineol or terpinen-4-ol. Focusing on the development of alternative weed control strategies, lavender essential oils containing high concentrations of terpinen-4-ol, lavandulol or linalyl acetate could be useful for the production of natural herbicides. These essential oil components combined with selected oregano or clove essential oil components, increase phytotoxicity and weed control due to the synergistic effect observed when in mixture.

scholarly journals Variations in the Chemical Composition of the Essential Oil of Lavandula angustifolia Mill., Moldoveanca 4 Romanian Variety

2020 ◽  
Vol 71 (7) ◽  
pp. 307-315
Author(s):  
Mihaela Bogdan ◽  
Simona Bungau ◽  
Delia Mirela Tit ◽  
Lucian Copolovici ◽  
Tapan Behl ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Organic Compounds ◽  
Chemical Profile ◽  
Linalyl Acetate ◽  
Lavandula Angustifolia

In this research, the variations in the chemical composition of the Lavandula angustifolia Mill. essential oil, the Romanian variety Moldoveanca 4, obtained from the same culture, in the same harvesting and extraction conditions, during the years 2016-2018, representing the years 2-4 of culture. Lavandula angustifolia Mill. flowers were supplied from an ecological-crops from N-E Romania and the essential oils were obtained by hydro distillation of freshly harvested flowers. To determine the chemical composition, the essential oil was semi-quantitatively analysed by using gas chromatography coupled with mass spectrometry (GC-MS). In all the samples, 30 organic compounds were identified, linalool and linalyl acetate being in similar concentrations (23.51-27.39% for linalool and 26.60-40.66% for linalyl acetate). Changes in chemical composition were observed in 2017 and 2018. Also, in 2017 was determined an increase in the quantity of linalyl acetate (from 26.60 to 40.66 %), and a slight decrease in linalool content; in 2018, the concentration in linalyl acetate remained approximately the same as in 2017 (38.03 versus 40.66 %) and there was an increase in linalool compared to the previous years (27.39 %, compared to 23.51 % in 2017 and 26.22 % in 2016). The chemical composition of the essential oils obtained from flowers of Lavandula angustifolia L., Moldoveanca 4 variety, showed substantial changes of the chemical profile describing the compounds during the analysed three years, as was determined by GC-MS analyses.

Effect of Plant Essential Oils and Their Major Constituents on Cypermethrin Tolerance Associated Detoxification Enzyme Activities in Spodoptera litura (Lepidoptera: Noctuidae)

2019 ◽  
Vol 112 (5) ◽  
pp. 2167-2176 ◽  
Author(s):  
Torranis Ruttanaphan ◽  
Wanchai Pluempanupat ◽  
Chutikan Aungsirisawat ◽  
Polnarong Boonyarit ◽  
Gaelle Le Goff ◽  
...  
Keyword(s):  
Essential Oil ◽  
Synergistic Effect ◽  
Essential Oils ◽  
Spodoptera Litura ◽  
Cytochromes P450 ◽  
Detoxification Enzymes ◽  
Plant Essential Oils ◽  
Activity Measurements ◽  
Lepidoptera Noctuidae ◽  
Essential Oil Compounds

Abstract Essential oils are well known to act as biopesticides. This research evaluated the acute toxicity and synergistic effect of essential oil compounds in combination with cypermethrin against Spodoptera litura Fabricius (Lepidoptera: Noctuidae). The effects of distillation extracts of essential oils from Alpinia galanga Zingiberaceae (Zingiberales) rhizomes and Ocimum basilicum Lamiaceae (Lamiales) leaves; one of their primary essential oil compounds 1,8-cineole; and linalool were studied on second-instar S. litura by topical application under laboratory conditions. The results showed that A. galanga had the highest control efficiency, whereas1,8-cineole provided a moderate efficacy. The mixtures of linalool, 1,8-cineole, O. basilicum, or A. galanga with cypermethrin were synergistic on mortality. Activity measurements of the main detoxification enzymes show that linalool and 1,8-cineole inhibit the activity of cytochromes P450 and carboxylesterases, which could explain their synergistic effect. Based on our results, the use of these mixtures represents an ideal eco-friendly approach, helping to manage cypermethrin resistance of S. litura.

Weeds for weed control: Asteraceae essential oils as natural herbicides

Weed Research ◽  
2017 ◽  
Vol 57 (5) ◽  
pp. 342-353 ◽  
Author(s):  
S Benvenuti ◽  
P L Cioni ◽  
G Flamini ◽  
A Pardossi
Keyword(s):  
Essential Oils ◽  
Weed Control ◽  
Natural Herbicides

scholarly journals Chemical Compositions of the Bark Essential Oils of Croton Monteverdensis and Croton Niveus from Monteverde, Costa Rica

2006 ◽  
Vol 1 (7) ◽  
pp. 1934578X0600100 ◽  
Author(s):  
William N. Setzer
Keyword(s):  
Costa Rica ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Chemical Compositions ◽  
Medicinal Uses ◽  
Oil Components

The essential oils of the barks of Croton monteverdensis Huft and C. niveus Jacq. (Euphorbiaceae) from Monteverde, Costa Rica, were isolated by hydrodistillation in yields of 0.03% and 0.10%, respectively. The chemical composition of the oils was determined by GC–MS. The most abundant essential oil components of C. monteverdensis were α-pinene (17.1%), β-pinene (10.5%), and linalool (8.3%), while C. niveus bark oil was made up largely of α-pinene (14.4%), 1,8-cineole (11.6%), and borneol (8.5%). The major components account for the fragrances and are consistent with the traditional medicinal uses of these plants.

scholarly journals Essential Oils as Antiviral Agents, Potential of Essential Oils to Treat SARS-CoV-2 Infection: An In-Silico Investigation

2020 ◽  
Vol 21 (10) ◽  
pp. 3426 ◽  
Author(s):  
Joyce Kelly R. da Silva ◽  
Pablo Luis Baia Figueiredo ◽  
Kendall G. Byler ◽  
William N. Setzer
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Antiviral Agents ◽  
Rna Dependent Rna Polymerase ◽  
Protein Targets ◽  
Docking Analysis ◽  
Main Protease ◽  
Pathogenic Viruses ◽  
Oil Components ◽  
Molecular Docking Analysis

Essential oils have shown promise as antiviral agents against several pathogenic viruses. In this work we hypothesized that essential oil components may interact with key protein targets of the 2019 severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). A molecular docking analysis was carried out using 171 essential oil components with SARS-CoV-2 main protease (SARS-CoV-2 Mpro), SARS-CoV-2 endoribonucleoase (SARS-CoV-2 Nsp15/NendoU), SARS-CoV-2 ADP-ribose-1″-phosphatase (SARS-CoV-2 ADRP), SARS-CoV-2 RNA-dependent RNA polymerase (SARS-CoV-2 RdRp), the binding domain of the SARS-CoV-2 spike protein (SARS-CoV-2 rS), and human angiotensin−converting enzyme (hACE2). The compound with the best normalized docking score to SARS-CoV-2 Mpro was the sesquiterpene hydrocarbon (E)-β-farnesene. The best docking ligands for SARS−CoV Nsp15/NendoU were (E,E)-α-farnesene, (E)-β-farnesene, and (E,E)−farnesol. (E,E)−Farnesol showed the most exothermic docking to SARS-CoV-2 ADRP. Unfortunately, the docking energies of (E,E)−α-farnesene, (E)-β-farnesene, and (E,E)−farnesol with SARS-CoV-2 targets were relatively weak compared to docking energies with other proteins and are, therefore, unlikely to interact with the virus targets. However, essential oil components may act synergistically, essential oils may potentiate other antiviral agents, or they may provide some relief of COVID-19 symptoms.

scholarly journals Chemical Constituents of the Essential Oil from Aerial Parts and Fruit of Anisosciadium Orientale

2012 ◽  
Vol 7 (1) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Vahid Rowshan ◽  
Ahmad Hatami ◽  
Atefeh Bahmanzadegan ◽  
Mahnaz Yazdani
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Chemical Constituents ◽  
Aerial Parts ◽  
Germacrene D ◽  
Geranyl Butyrate ◽  
Oil Components ◽  
Fruit Oil

The essential oils from aerial parts and fruits of Anisosciadium orientale DC. growing wild in Iran were obtained by hydrodistillation and analyzed by GC and GC/MS. Seventy-one compounds were identified in the fruit oil and fifteen in the oil from the aerial parts. The main oil components of the fruits and aerial parts were myristicin (33.5%-33.7%), α-terpinolene (22%-25.8%) and limonene (19.5%-19.7%). Some compounds, such as geranyl butyrate and germacrene-D, were only detected in the fruit oil.

scholarly journals Bio-Herbicidal Effects of Oregano and Rosemary Essential Oils on Chamomile (Matricaria chamomilla L.) Crop in Organic Farming System

Agronomy ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 475 ◽  
Author(s):  
Frabboni ◽  
Tarantino ◽  
Petruzzi ◽  
Disciglio
Keyword(s):  
Essential Oils ◽  
Weed Control ◽  
Weed Management ◽  
Farming System ◽  
Point Of View ◽  
Matricaria Chamomilla ◽  
Weed Species ◽  
Organic System ◽  
Economic Point ◽  
Natural Herbicides

Chamomile (Matricaria chamomilla L.) is a well-known medicinal plant species in which the products requested from the market are those that are derived from the organic system. The study was conducted to assess the allelopathic effects, as natural herbicides, of two essential oils extracted from oregano (Origanum vulgare L.) and rosemary (Rosmarimum officinalis L.), with the objective of exploring the possibility of their utilization for future weed management. A field experiment was conducted over two seasons, when the infestation of 15 different weed species was detected. Each essential oil was applied at two different concentrations (50% diluted and undiluted), three times during the chamomile crop under an organic farm system. The results demonstrated that the germination of different weed species was affected differently by the type of essential oils and especially by their concentrations. The undiluted oils inhibited most of the germination of several weed species, highlighting a significantly higher percentage of Weed Control Efficiency (WCE) and suggesting the potential to be used as bio-herbicides. Bioherbicidal weed control methods could offer an advantage with respect to hand weeding, particularly from an economic point of view.

Anti-psoriatic effect of Lavandula angustifolia essential oil and its major components linalool and linalyl acetate

2020 ◽  
Vol 261 ◽  
pp. 113127
Author(s):  
Vineet Kumar Rai ◽  
Priyam Sinha ◽  
Kuldeep Singh Yadav ◽  
Aparna Shukla ◽  
Archana Saxena ◽  
...  
Keyword(s):  
Essential Oil ◽  
Linalyl Acetate ◽  
Lavandula Angustifolia

Hydrodistillation-headspace solvent microextraction, a new method for analysis of the essential oil components of Lavandula angustifolia Mill.

2005 ◽  
Vol 1098 (1-2) ◽  
pp. 14-18 ◽  
Author(s):  
Ali Reza Fakhari ◽  
Peyman Salehi ◽  
Rouhollah Heydari ◽  
Samad Nejad Ebrahimi ◽  
Paul R. Haddad
Keyword(s):  
Essential Oil ◽  
New Method ◽  
Lavandula Angustifolia ◽  
Oil Components

scholarly journals Essential Oil Composition of Lavandin (Lavandula x intermedia) cultivated in Bismil-Turkey

2018 ◽  
Vol 1 (1) ◽  
pp. 1120-1125
Author(s):  
Mustafa Abdullah Yilmaz
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Essential Oil ◽  
Essential Oils ◽  
Essential Oil Composition ◽  
Gas Chromatography Mass Spectrometry ◽  
Oil Composition ◽  
Linalyl Acetate ◽  
Stem Leaf ◽  
Different Parts

The goal of this study was to investigate the essential oil compositions of different parts (stem, leaf, flower and mixture) of Lavandula x intermedia in Bismil-Diyarbakır,Turkey. The chemical composition of essential oils obtained by hydrodistillation from fresh Lavandin samples were analyzed using gas chromatography-mass spectrometry (GC/MS). The results indicate the major components of the studied parts of lavandin was; linalool (24.97-2.52-43.86-39.43 %), linalyl acetate (3.,4-0.29-9.37-15.76 %), eucalyptol (33.81-43.81-18.47-12.08 %), camphor (13.12-15.91-8.72-9.21 %), endo-borneol (2.03-5.18-0.68-1.24 %) and alpha-terpineol (2.84-2.47-1.28-3.86 %) in essential oils of stem, leaf, flower and mixture parts of fresh lavandin respectively. It was understood that linalool and linalyl acetate level were the highest in flower and mix parts while eucalyptol, camphor and endo-borneol levels were the highest in stem and leaf parts of the plant.

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