scholarly journals Food Grade Pimenta Leaf Essential Oil Reduces the Attachment of Salmonella enterica Heidelberg (2011 Ground Turkey Outbreak Isolate) on to Turkey Skin

2017 ◽  
Vol 8 ◽  
Author(s):  
Divek V. T. Nair ◽  
Anup Kollanoor Johny
Keyword(s):  
Essential Oil ◽  
Salmonella Enterica ◽  
Food Grade ◽  
Leaf Essential Oil ◽  
Outbreak Isolate

Chemical Composition and in-vitro antimicrobial screening of leaf essential oil of Plectranthus gerardianus Benth., and isolation of the major constituent of oil

2020 ◽  
Vol 10 ◽  
Author(s):  
Navadha Bhatt ◽  
Navabha Joshi ◽  
Kapil Ghai ◽  
Om Prakash
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Major Constituent ◽  
In Vitro Antimicrobial Activity ◽  
Gram Positive Bacteria ◽  
Medicinal Value ◽  
Leaf Essential Oil ◽  
Plant Families ◽  
Total Oil

Background: The Lamiaceae (Labiatae) is one of the most diverse and widespread plant families’ in terms of ethno medicine and its medicinal value is based on the volatile oils concentration. This family is important for flavour, fragrance and medicinal properties. Manyplants belonging to this family have indigenous value. Method: The essential oil of Plectranthus gerardianusBenth. (Lamiaceae), was analysed by GC and GC-MS analysis, while the major component was isolated and conformed by NMR spectroscopy. Result: The oil was found to be rich in oxygenated monoterpenes, which contribute around 62% of the total oil. The major components identified were fenchone (22.90%) and carvenone oxide (16.75%), besides other mono and sesquiterpenoids. The in-vitro antimicrobial activity of essential oil was tested against three gram negative bacteria viz. Pasteurellamultocida, Escherichia coli, and Salmonella enterica, two gram positive bacteria viz. Staphylococcus aureus and Bacillus subtilis and two fungi viz. Candida albicans and Aspergillusflavus. The antimicrobial activity of the oil was also compared to the antimicrobial activity of leaf essential oil of another Himalayan plant viz. Nepetacoerulescens. Conclusion: The oil showed in-vitro antimicrobial activity against all the microbial strains and can lessen the ever-growing demand of potentially hazardous antibiotics for treatment.

scholarly journals Chemical Compositions, Mosquito Larvicidal and Antimicrobial Activities of Essential Oils from Five Species of Cinnamomum Growing Wild in North Central Vietnam

Molecules ◽  
2020 ◽  
Vol 25 (6) ◽  
pp. 1303 ◽  
Author(s):  
Do N. Dai ◽  
Nguyen T. Chung ◽  
Le T. Huong ◽  
Nguyen H. Hung ◽  
Dao T.M. Chau ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Larvicidal Activity ◽  
Antimicrobial Agents ◽  
Chemical Compositions ◽  
North Central ◽  
Mosquito Larvicidal Activity ◽  
Central Vietnam ◽  
Leaf Essential Oil

Members of the genus Cinnamomum (Lauraceae) have aromatic volatiles in their leaves and bark and some species are commercially important herbs and spices. In this work, the essential oils from five species of Cinnamomum (C. damhaensis, C. longipetiolatum, C. ovatum, C. polyadelphum and C. tonkinense) growing wild in north central Vietnam were obtained by hydrodistillation, analyzed by gas chromatography and screened for antimicrobial and mosquito larvicidal activity. The leaf essential oil of C. tonkinense, rich in β-phellandrene (23.1%) and linalool (32.2%), showed excellent antimicrobial activity (MIC of 32 μg/mL against Enterococcus faecalis and Candida albicans) and larvicidal activity (24 h LC50 of 17.4 μg/mL on Aedes aegypti and 14.1 μg/mL against Culex quinquefasciatus). Cinnamomum polyadelphum leaf essential oil also showed notable antimicrobial activity against Gram-positive bacteria and mosquito larvicidal activity, attributable to relatively high concentrations of neral (11.7%) and geranial (16.6%). Thus, members of the genus Cinnamomum from Vietnam have shown promise as antimicrobial agents and as potential vector control agents for mosquitoes.

scholarly journals Composition and biological assays of the leaf essential oil of Asparagus flagellaris (Kunth) Bak

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Oluwakayode O. Odeja ◽  
Michael Gabriel Ibok ◽  
Ejike O. Okpala
Keyword(s):  
Free Radical ◽  
Essential Oil ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Salmonella Typhi ◽  
Antimicrobial Activities ◽  
Free Radical Scavenging ◽  
Gas Chromatography Mass Spectrometry ◽  
Klebsiella Pneumonia ◽  
Leaf Essential Oil

Abstract Background Asparagus flagellaris leaves are ethnomedicinally used to treat syphilis, gonorrhea and other sexually transmitted diseases (STDs), with no reports on the volatile constituents. This study was aimed to quantitatively and qualitatively characterise the composition of essential oil, evaluates the free radical scavenging and antimicrobial capacity of the essential oil. Methods The essential oil was isolated by hydrodistillation method using all-glass Clevenger-type apparatus, while the identification and quantification of constituents were performed by gas chromatography-mass spectrometry (GC-MS) technique. The antioxidant activity on 2, 2-diphenyl-1-picrylhydrazyl (DPPH) was evaluated and the oil was also tested against 10 strains of microorganisms consisting of 6 bacteria: Escherichia coli, Salmonella typhi, Klebsiella pneumonia, Pseudomonas aeruginosa, Staphylococcus aureus and Bacillus subtilis and 4 fungi: Candida albicans, Penicillium notatum, Aspergillus niger and Rhizopus spp. using broth dilution and surface plate methods, respectively. Results A pale yellow essential oil with a characteristic scent was obtained, with a yield of 0.80% (w/w). A total of 28 compounds accounting for 97.41% of the total oil contents were identified. The oil was predominated by Thymol and its derivatives, accounting for 57.48%. The most abundance (% area) constituents of the essential oil were 5-Thymyl tiglate (18.49%), Thymyl-2-methyl butyrate (17.34%), Thymol hydroquinone dimethyl ether (10.52%), Thymol methyl ether (9.42%) and 5-Propyl-1, 3-benzodioxole (4.59%). The essential oil showed a significant free radical scavenging activity compared to the standard antioxidant drugs used in this study, with % inhibition varying from 88.06 ± 0.0001 to 93.05 ± 0.0006. The leaf essential oil exhibited antimicrobial activity on all the tested organisms at 500–125 μg/mL, with an 18–10 mm inhibitory zone. Conclusion The leaf essential oil of A. flagellaris contains notable chemical compounds responsible for its antioxidant and antimicrobial activities.

scholarly journals Effect of essential oil compound on shedding and colonization of Salmonella enterica serovar Heidelberg in broilers

2013 ◽  
Vol 92 (3) ◽  
pp. 836-841 ◽  
Author(s):  
W.Q. Alali ◽  
C.L. Hofacre ◽  
G.F. Mathis ◽  
G. Faltys
Keyword(s):  
Essential Oil ◽  
Salmonella Enterica

scholarly journals Cytotoxic effect of leaf essential oil of Lippia gracilis Schauer (Verbenaceae)

Phytomedicine ◽  
2013 ◽  
Vol 20 (7) ◽  
pp. 615-621 ◽  
Author(s):  
Rosana P.C. Ferraz ◽  
Diogo S. Bomfim ◽  
Nanashara C. Carvalho ◽  
Milena B.P. Soares ◽  
Thanany B. da Silva ◽  
...  
Keyword(s):  
Essential Oil ◽  
Cytotoxic Effect ◽  
Leaf Essential Oil

Nanoemulsion Thermoreversible Pluronic F127-Based Hydrogel Containing Hyptis pectinata (Lamiaceae) Leaf Essential Oil Produced a Lasting Anti-hyperalgesic Effect in Chronic Noninflammatory Widespread Pain in Mice

2017 ◽  
Vol 55 (2) ◽  
pp. 1665-1675 ◽  
Author(s):  
Lucindo J. Quintans-Júnior ◽  
Renan G. Brito ◽  
Jullyana S. S. Quintans ◽  
Priscila L. Santos ◽  
Zaine T. Camargo ◽  
...  
Keyword(s):  
Essential Oil ◽  
Pluronic F127 ◽  
Widespread Pain ◽  
Leaf Essential Oil

Analysis of Leaf Essential Oil Constituents ofCinnamomum zeylanicumGrown in Nigeria

2009 ◽  
Vol 12 (1) ◽  
pp. 76-80
Author(s):  
V. Tira-Picos ◽  
A.A. Gbolade ◽  
J.M.F. Nogueria ◽  
K.K. Ajibesin
Keyword(s):  
Essential Oil ◽  
Leaf Essential Oil
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