scholarly journals Herbicidal Activity of Thymbra capitata (L.) Cav. Essential Oil

Molecules ◽  
2020 ◽  
Vol 25 (12) ◽  
pp. 2832 ◽  
Author(s):  
Mercedes Verdeguer ◽  
Natalia Torres-Pagan ◽  
Marta Muñoz ◽  
Amira Jouini ◽  
Susana García-Plasencia ◽  
...  
Keyword(s):  
Essential Oil ◽  
Chenopodium Album ◽  
Amaranthus Retroflexus ◽  
Herbicidal Activity ◽  
In Vitro Assays ◽  
Main Compound ◽  
Setaria Verticillata ◽  
Solanum Nigrum L ◽  
Soil Seedbank

The bioherbicidal potential of Thymbra capitata (L.) Cav. essential oil (EO) and its main compound carvacrol was investigated. In in vitro assays, the EO blocked the germination and seedling growth of Erigeron canadensis L., Sonchus oleraceus (L.) L., and Chenopodium album L. at 0.125 µL/mL, of Setaria verticillata (L.) P.Beauv., Avena fatua L., and Solanum nigrum L. at 0.5 µL/mL, of Amaranthus retroflexus L. at 1 µL/mL and of Portulaca oleracea L., and Echinochloa crus-galli (L.) P.Beauv. at 2 µL/mL. Under greenhouse conditions, T. capitata EO was tested towards the emergent weeds from a soil seedbank in pre and post emergence, showing strong herbicidal potential in both assays at 4 µL/mL. In addition, T. capitata EO, applied by spraying, was tested against P. oleracea, A. fatua and E. crus-galli. The species showed different sensibility to the EO, being E. crus-galli the most resistant. Experiments were performed against A. fatua testing T. capitata EO and carvacrol applied by spraying or by irrigation. It was verified that the EO was more active at the same doses in monocotyledons applied by irrigation and in dicotyledons applied by spraying. Carvacrol effects on Arabidopsis root morphology were also studied.

scholarly journals Herbicide Potential of Selected Essential Oils From Plants of Lamiaceae and Asteraceae Families

2021 ◽  
Vol 74 ◽  
Author(s):  
Milena Nikolova ◽  
Boryanka Traykova ◽  
Elina Yankova-Tsvetkova ◽  
Tatyana Stefanova ◽  
Anatoli Dzhurmanski ◽  
...  
Keyword(s):  
Seed Germination ◽  
Essential Oil ◽  
Essential Oils ◽  
Trifolium Pratense ◽  
Herbicidal Activity ◽  
Field Conditions ◽  
In Vitro Assays ◽  
Gas Chromatography Mass Spectrometry ◽  
Monarda Fistulosa

Abstract Essential oils from Monarda fistulosa L., Satureja pilosa Vel., Origanum vulgare subsp. hirtum Ietswaart. (Greek oregano), Micromeria dalmatica Benth., Thymus longedentatus (Degen & Urum.) Ronniger, and Artemisa campestris L. were evaluated as inhibitors of seed germination in target plants Lolium perenne L. and Trifolium pratense L. using in vitro assays. The essential oils were applied on the seeds as aqueous solutions at concentrations ranging from 0.5–3.0 µL/mL. Complete inhibition was established at a concentration of 1.5 µL/mL with the most effective essential oils. Oregano oil was evaluated for its inhibitory activity on seed germination under field conditions; the essential oil was applied as an aqueous solution at concentrations of 3, 5, and 10 µL/mL on superabsorbent Terawet. The mass obtained was mixed with the seeds of the target plants and planted in a field. After 1 month, the results were evaluated based on the weight of the aerial parts of the plants from control and experimental areas. At the highest concentration studied, the weight of the plants was 77% lower in the experimental areas than in the controls. The chemical composition of the essential oils was analyzed using gas chromatography–mass spectrometry. The results showed that carvacrol-rich essential oils had a strong inhibitory effect on seed germination. The inclusion of the essential oil on a superabsorbent was a good way to preserve its herbicidal activity under field conditions as this prevented its rapid evaporation.

Investigation of the Essential Oil of Ormenis africana from Morocco: Revision of Chemical Composition and Antibacterial Activity

2021 ◽  
Vol 1 (30) ◽  
pp. 34-38
Author(s):  
El Hanbali F Barrero A.F
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Proteus Vulgaris ◽  
Oil Composition ◽  
Gram Negative ◽  
Main Compound ◽  
Oxygenated Compounds ◽  
Aerial Parts

Abstract- The essential oil composition from the aerial parts of Ormenis africana (Asteraceae), an endemic species from Morocco, has been investigated by GC/MS. A total of 31 compounds were identified, representing 77%. After fractionation by column chromatography, the main compound was isolated and its structure elucidated by NMR spectroscopy. The essential oil was dominated by oxygenated compounds with spathulenol (45.8%) followed by camphor (7.1%), -cadinol (5.9%) and -bisabolol (5.9%) as the main compounds. This oil can be classified as spathulenol-type according to its spathulenol content. In vitro the antibacterial activity of the whole essential oil against three Gram positive (Bacillus cereus, Enterococcus faecalis, Streptococcus C) bacteria and three Gram negative (Proteus vulgaris, Escherichia coli, Pseudomonas aeroginosa) bacteria, showed significant results. Keywords: Asteraceae, Ormenis africana, Essential oil, Spathulenol, Antibacterial activity.

scholarly journals Essential oil composition and in vitro antibacterial activity of Chenopodium album subsp. striatum

2018 ◽  
Vol 69 (2) ◽  
pp. 144-155 ◽  
Author(s):  
Negin Khomarlou ◽  
Parviz Aberoomand-Azar ◽  
Ardalan Pasdaran Lashgari ◽  
Hamid Tebyanian ◽  
Ali Hakakian ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Chenopodium Album ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
In Vitro Antibacterial Activity

scholarly journals Premna odorata: Seasonal Metabolic Variation in the Essential Oil Composition of Its Leaf and Verification of Its Anti-Ageing Potential via In Vitro Assays and Molecular Modelling

Biomolecules ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 879
Author(s):  
Ahmed E. Altyar ◽  
Mohamed L. Ashour ◽  
Fadia S. Youssef
Keyword(s):  
Gas Chromatography ◽  
Essential Oil ◽  
Molecular Modelling ◽  
Essential Oil Composition ◽  
In Vitro Assays ◽  
Oil Composition ◽  
Different Seasons ◽  
Metabolic Variation ◽  
Active Centres

The metabolic variation in the essential oil composition of Premna odorata leaves obtained from different seasons was quantitatively and qualitatively determined employing GC/MS (Gas Chromatography coupled with Mass Spectrometry) and GC/FID (Gas chromatography equipped with flame ionization detector) techniques. It displayed the existence of 97 constituents accounting for 94.19%, 92.27%, 91.95% and 92.63% for POS (spring), POM (summer), POA (autumn) and POW (winter) whole essential oils. β-Caryophyllene constituting the main metabolite in the oil in the different seasons. To better visualize the differences between them, GC data were exposed to chemometric analysis. A PCA (principal component analysis) score plot revealed the closeness of POS and POW. Molecular modelling on collagenase, elastase and hyaluronidase enzymes active centres shows that different compounds existing in the essential oil of Premna odorata leaves shows binding to the active sites with variable degrees that suggested its anti-ageing potential. Palmitic acid displayed the highest fitting for both the collagenase and elastase active centres in both pH-based and rule-based ionization methods with ∆G equals −78.27 and −44.77 kcal/mol, respectively; meanwhile, heptacosane showed the highest fitting score in the hyaluronidase centre with ∆G = −43.78 kcal/mol. In vitro assays consolidates the obtained modelling studies in which essential oil shows considerable anti-elastase and anti-hyaluronidase potential as evidenced by their IC50 values being 49.3 and 37.7 μg/mL, respectively; meanwhile, the essential oil of Premna odorata leaves displayed mild anti-collagenase potential. Thus, it can be concluded that Premna odorata could serve as a promising anti-ageing naturally occurring drug that could be effectively incorporated by pharmaceutical industries in cosmetics combating ageing and skin wrinkling.

Therapeutic potential of monoterpene α-thujone, the main compound of Thuja occidentalis L. essential oil, against malignant glioblastoma multiforme cells in vitro

Fitoterapia ◽  
2019 ◽  
Vol 134 ◽  
pp. 172-181 ◽  
Author(s):  
Maciej Pudełek ◽  
Jessica Catapano ◽  
Paweł Kochanowski ◽  
Krzysztof Mrowiec ◽  
Natalia Janik-Olchawa ◽  
...  
Keyword(s):  
Glioblastoma Multiforme ◽  
Essential Oil ◽  
Therapeutic Potential ◽  
Thuja Occidentalis ◽  
Main Compound

scholarly journals Acantholippia salsoloides: Phytochemical Composition and Biological Potential of a Thujonic Population

2019 ◽  
Vol 14 (6) ◽  
pp. 1934578X1985854
Author(s):  
Liliana Celaya ◽  
Carmen Viturro ◽  
Luís R. Silva
Keyword(s):  
Essential Oil ◽  
High Performance ◽  
Micrococcus Luteus ◽  
Pharmaceutical Formulations ◽  
In Vitro Assays ◽  
Array Detector ◽  
Biological Potential ◽  
Polar Extracts ◽  
Hydroethanolic Extract

Acantholippia salsoloides (Verbenaceae) is an aromatic plant widespread in the Andean region. The infusion (leaves and flowers) is widely used as a digestive stimulant as well as for the treatment of various diseases in traditional medicine. A. salsoloides attributes its common name “rica-rica” to the fresh and sweet fragrance of the plant. In this work, 2 different polar extracts and the essential oil of a selected rica-rica population were studied. The phenolic composition was analyzed by high-performance liquid chromatography diode array detector; the essential oil profile was determined by gas-chromatography ion-trap mass spectrometry/flame ionization detection. For all extracts, the antibacterial potential was performed by in vitro assays; the antioxidant and α-glucosidase inhibition were determined in decoction and hydroethanolic extracts. The volatile profile allowed the identification of 26 volatile compounds, β-thujone (84%) being the major one in this rica-rica population. Eighteen phenolic compounds were identified; isoferulic acid (16%-18%) and cynaroside (45%-47%) were the larger ones. In a general way, the hydroethanolic extract was more active against Staphylococcus aureus and Micrococcus luteus (minimum inhibitory concentrations= 0.3- 1.3 mg/mL). Both polar extracts have strong antiradical activities although decoction extract proved to be more active against DPPH· (half-maximal inhibitory concentration [IC50] =36 µg/mL) and O2•− (IC50 =28 µg/mL) while hydroethanolic extract shows higher action over α-glucosidase (IC50 =217 µg/mL). The results suggest that A. salsoloides leaves and flowers may be an interesting source of natural antioxidants, antidiabetics, or antimicrobials, and could be used in dietary supplements, medicinal products and pharmaceutical formulations.

scholarly journals Inhibitory Activity of Corn Gluten Hydrolysate on Monocotyledonous and Dicotyledonous Species

HortScience ◽  
1997 ◽  
Vol 32 (2) ◽  
pp. 243-245 ◽  
Author(s):  
Dianna L. Liu ◽  
Nick E. Christians
Keyword(s):  
Root Length ◽  
Lolium Multiflorum ◽  
Plantago Lanceolata ◽  
Chenopodium Album ◽  
Creeping Bentgrass ◽  
Amaranthus Retroflexus ◽  
Shoot Length ◽  
Herbicidal Activity ◽  
Plant Survival ◽  
Corn Gluten

Corn gluten hydrolysate (CGH) was evaluated in the greenhouse for its herbicidal activity on 19 selected monocotyledonous and dicotyledonous species. Treatments included CGH at 0, 1, 2, 4, and 8 g·dm-2. Plant susceptibility was based on plant survival, shoot length, and root length. The germination and growth of all species were inhibited by the application of CGH at all rates. Black medic (Medicago lupulina L.), buckhorn plaintain (Plantago lanceolata L.), creeping bentgrass (Agrostis palustris Huds.), purslane (Portulaca oleracea L.), and redroot pigweed (Amaranthus retroflexus L.) were the most susceptible species, exhibiting more than 70% reduction in root length, 60% reduction in plant survival, and 52% reduction in shoot length with CGH at 1 g·dm-2. Common lambsquarters (Chenopodium album L.), curly dock (Rumex crispus L.), dandelion (Taraxacum officinale Weber), giant foxtail (Setaria faberi Herrm.), large crabgrass [Digitaria sanguinalis (L.) Scop.], and yellow foxtail [Setaria lutescens (Weigel) Hubb.] exhibited more than 50% reduction in root length and plant survival at 1 g·dm-2. Annual bluegrass (Poa annua L.), barnyardgrass [Echinochloa crusgali (L.) Beauv.], green foxtail [Setaria viridis (L.) Beauv.], orchardgrass (Dactylis glomerata L.), perennial ryegrass (Lolium perenne L.), quackgrass [Agropyron repens (L.) Beauv.], and velvetleaf (Abutilon theophrasti Medic.) survivial was reduced by 60% at 2 g·dm-2. Annual ryegrass (Lolium multiflorum Lam.) was the least susceptible species.

Activity of chitosan-montmorillonite bionanocomposites incorporated with rosemary essential oil: From in vitro assays to application in fresh poultry meat

2019 ◽  
Vol 89 ◽  
pp. 241-252 ◽  
Author(s):  
Victor Gomes Lauriano Souza ◽  
João R.A. Pires ◽  
Érica Torrico Vieira ◽  
Isabel M. Coelhoso ◽  
Maria Paula Duarte ◽  
...  
Keyword(s):  
Essential Oil ◽  
Poultry Meat ◽  
In Vitro Assays ◽  
Rosemary Essential Oil

scholarly journals Phytotoxic Activity of Clove Oil, Its Constituents, and Its Modification by Light Intensity in Broccoli and Common Lambsquarters (Chenopodium album)

Weed Science ◽  
2012 ◽  
Vol 60 (4) ◽  
pp. 607-611 ◽  
Author(s):  
Agnieszka Stokłosa ◽  
Renata Matraszek ◽  
Murray B. Isman ◽  
Mahesh K. Upadhyaya
Keyword(s):  
Light Intensity ◽  
Essential Oil ◽  
Dose Response ◽  
Chenopodium Album ◽  
Membrane Damage ◽  
Membrane Integrity ◽  
Herbicidal Activity ◽  
Clove Oil ◽  
Cell Membrane Integrity ◽  
Common Lambsquarters

Herbicidal activity of clove oil and its main constituents eugenol, β-caryophyllene, and α-humulene was studied by measuring their effects on cell membrane integrity in broccoli and common lambsquarters plants at the three- and nine-leaf stage, respectively. Roles of essential oil constituents in the overall phytotoxicity of clove oil, dose-response (10 to 160 mM) relationships of their phytotoxicity, and the effect of light intensity on phytotoxicity of clove oil and eugenol were studied. Most of the phytotoxicity of clove oil (2.5% solution) was due to eugenol, its largest constituent. β-caryophyllene and α-humulene played little or no role. Dose-response relationships showed that at equimolar concentration, eugenol was the most phytotoxic essential oil constituent of the clove oil. On a per unit biomass basis, membrane damage in response to clove oil and eugenol sprays decreased with increasing light intensity. This suggests that efficacy of essential oil in causing plant damage could be affected by light intensity experienced by plants prior to the oil spray.

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