scholarly journals Studies on the Microanalysis of Essential Oil Components. IV. The Spot Test of Essential Oil Components by Antimony Pentachloride.

1957 ◽  
Vol 5 (6) ◽  
pp. 611-613 ◽  
Author(s):  
Keiichiro Hayashi ◽  
Yohei Hashimoto
Keyword(s):  
Essential Oil ◽  
Spot Test ◽  
Antimony Pentachloride ◽  
Oil Components

Anti-Neuropathic Pain Activity of Ageratum conyzoides L due to The Essential Oil Components

2020 ◽  
Vol 19 ◽  
Author(s):  
Yedy Purwandi Sukmawan ◽  
Kusnandar Anggadiredja ◽  
I Ketut Adnyana
Keyword(s):  
Neuropathic Pain ◽  
Essential Oil ◽  
Opioid Receptor ◽  
Steam Distillation ◽  
Chronic Constriction Injury ◽  
Thermal Hyperalgesia ◽  
Ageratum Conyzoides ◽  
Safety And Efficacy ◽  
Activity Test ◽  
Oil Components

Background: Neuropathic pain is one of the contributors to the global burdens of illness. At present many patients do not achieve satisfactory pain relief even with synthetic pain-killers. Taking this into consideration, it is necessary to search for natural product-derived alternative treatment with confirmed safety and efficacy. Ageratum conyzoides L is a plant often used as analgesic in Indonesia, however, anti-neuropathic pain activity of this plant is still unknown. Objective: To determine the anti-neuropathic pain activity of the essential oil and non-essential oil component (distillation residue) of A. conyzoides L. Methods: We conducted separation of the essential oil component from other secondary metabolites through steam distillation. Both components were tested for anti-neuropathic pain activity using chronic constriction injury animal models with thermal hyperalgesia and allodynia tests. The animals were divided into 7 test groups namely normal, sham, negative, positive (pregabalin at 0.195 mg/20 g BW of mice), essential oil component (100 mg/kg BW), and non-essential oil component (100 mg/kg BW). Naloxone was tested against the most potent anti-neuropathic pain component (essential oil or nonessential oil) to investigate the involvement of opioid receptor. Results: The GC-MS of the essential oil component indicated the presence of 60 compounds. Meanwhile, non-essential oil components contained alkaloid, flavonoid, polyphenol, quinone, steroid, and triterpenoid. This non-essential oil component contained a total flavonoid equivalent to 248.89 ppm quercetin. The anti-neuropathic pain activity test showed significantly higher activity of the essential oil component compared to the non-essential oil component and negative groups (p<0.05). Furthermore, the essential oil component showed equal activity to pregabalin (p>0.05). However, this activity was abolished by naloxone, indicating the involvement of opioid receptor in the action of the essential oil component. Conclusion: The essential oil component of A. conyzoides L is a potential novel substance for use as anti-neuropathic pain.

Combined application of phenolic acids and essential oil components against Salmonella Enteritidis and Listeria monocytogenes in vitro and in ready-to-eat cooked ham

LWT ◽  
2021 ◽  
pp. 111881
Author(s):  
Jessica Audrey Feijó Corrêa ◽  
João Vitor Garcia dos Santos ◽  
Alberto Gonçalves Evangelista ◽  
Anne Caroline Schoch Marques Pinto ◽  
Renata Ernlund Freitas de Macedo ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Essential Oil ◽  
Phenolic Acids ◽  
Salmonella Enteritidis ◽  
Combined Application ◽  
Cooked Ham ◽  
Oil Components

Priming with salicylic acid, β-carotene and tryptophan modulates growth, phenolics and essential oil components of Ocimum basilicum L. grown under salinity

2021 ◽  
Vol 281 ◽  
pp. 109964
Author(s):  
Halime Kahveci ◽  
Nilgun Bilginer ◽  
Emel Diraz-Yildirim ◽  
Muhittin Kulak ◽  
Emre Yazar ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Essential Oil ◽  
Ocimum Basilicum ◽  
Oil Components ◽  
Β Carotene

Effects of essential oil components exposure on biological parameters of Caenorhabditis elegans

2021 ◽  
pp. 112763
Author(s):  
Cristina Fuentes ◽  
Samuel Verdú ◽  
Ana Fuentes ◽  
María José Ruiz ◽  
José Manuel Barat
Keyword(s):  
Caenorhabditis Elegans ◽  
Essential Oil ◽  
Biological Parameters ◽  
Oil Components

Growth Inhibition of Escherichia coli O157:H7 and Listeria monocytogenes by Carvacrol and Eugenol Encapsulated in Surfactant Micelles

2005 ◽  
Vol 68 (12) ◽  
pp. 2559-2566 ◽  
Author(s):  
SYLVIA GAYSINSKY ◽  
P. MICHAEL DAVIDSON ◽  
BARRY D. BRUCE ◽  
JOCHEN WEISS
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Listeria Monocytogenes ◽  
Essential Oil ◽  
Growth Inhibition ◽  
Surfactant Concentration ◽  
Escherichia Coli O157 ◽  
Surfactant Micelles ◽  
E Coli ◽  
Oil Components

Growth inhibition of four strains of Escherichia coli O157:H7 (H1730, F4546, 932, and E0019) and Listeria monocytogenes (Scott A, 101, 108, and 310) by essential oil components (carvacrol and eugenol) solubilized in nonionic surfactant micelles (Surfynol 465 and 485W) was investigated. Concentrations of encapsulated essential oil components ranged from 0.02 to 1.25% depending on compound, surfactant type, and surfactant concentration (0.5 to 5%). Eugenol encapsulated in Surfynol 485W micelles was most efficient in inhibiting growth of the pathogens; 1% Surfynol 485W and 0.15% eugenol was sufficient to inhibit growth of all strains of E. coli O157:H7 and three of four strains of L. monocytogenes (Scott A, 310, and 108). The fourth strain, L. monocytogenes 101, was inhibited by 2.5% Surfynol and 0.225% eugenol. One percent Surfynol 485W in combination with 0.025% carvacrol was effective in inhibiting three of four strains of E. coli O157:H7. Strain H1730 was the most resistant strain, requiring 0.3% carvacrol and 5% surfactant for complete inhibition. Growth inhibition of L. monocytogenes by combinations of carvacrol and Surfynol 465 ranged between 0.15 and 0.35% and 1 and 3.75%, respectively. Generally, the antimicrobial activity of Surfynol 465 in combination with eugenol was higher than that for the combination with carvacrol. The potent activity was attributed to increased solubility of essential oil components in the aqueous phase due to the presence of surfactants and improved interactions of antimicrobials with microorganisms.

scholarly journals Effect of densities of planting on yield and essential oil components of Fennel (Foeniculum vulgare Mill Var. Soroksary)

2009 ◽  
Vol 1 (1) ◽  
Author(s):  
Jalal Khorshidi ◽  
Mohammad Fakhr Tabatabaie ◽  
Reza Omidbaigi ◽  
Fatemeh Sefidkon
Keyword(s):  
Essential Oil ◽  
Foeniculum Vulgare ◽  
Oil Components

scholarly journals Antiviral Essential Oil Components Against SARS-CoV-2 in Pre-procedural Mouth Rinses for Dental Settings During COVID-19: A Computational Study

2021 ◽  
Vol 9 ◽  
Author(s):  
Pradeep Kumar Yadalam ◽  
Kalaivani Varatharajan ◽  
K. Rajapandian ◽  
Priyanka Chopra ◽  
Deepavalli Arumuganainar ◽  
...  
Keyword(s):  
Essential Oil ◽  
Oral Cavity ◽  
Computational Study ◽  
Molecular Descriptor ◽  
Conceptual Dft ◽  
Highly Active ◽  
Dental Procedures ◽  
Mouth Rinses ◽  
Viral Particles ◽  
Oil Components

COVID-19 mainly spreads through cough or sneeze droplets produced by an infected person. The viral particles are mostly present in the oral cavity. The risk of contracting COVID-19 is high in the dental profession due to the nature of procedures involved that produce aerosols. Along with other measures to limit the risk of infection, pre-procedural mouth rinses are beneficial in reducing the viral particles in the oral cavity. In this study, the antiviral efficacy of essential oil components has been determined specifically against SARS-CoV-2 by molecular docking and conceptual DFT approach. Based on the binding affinities of the components against the receptor binding domain of the S1 glycoprotein, cuminal, carvacrol, myrtanol, and pinocarveol were found to be highly active. The molecular descriptor values obtained through conceptual DFT also indicated the above-mentioned components to be active based on the correlation between the structure and the activity of the compounds. Therefore, pre-procedural mouth rinses with these components included may be specifically suitable for dental procedures during the COVID-19 period.

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