Exploiting the chemical composition of essential oils from Psidium cattleianum and Psidium guajava and its antimicrobial and antioxidant properties

2021 ◽  
Vol 86 (10) ◽  
pp. 4637-4649
Author(s):  
Weysser Felipe Cândido Souza ◽  
Fernando Azevedo Lucena ◽  
Ruann Janser Soares Castro ◽  
Cybelle Pereira Oliveira ◽  
Max Rocha Quirino ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Antioxidant Properties ◽  
Psidium Guajava ◽  
Psidium Cattleianum

scholarly journals Chemical composition and biological activities of the essential oils of Psidium guajava leaf

2019 ◽  
Vol 31 (4) ◽  
pp. 993-998 ◽  
Author(s):  
Afaf Weli ◽  
Amna Al-Kaabi ◽  
Jamal Al-Sabahi ◽  
Sadri Said ◽  
Mohammad Amzad Hossain ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Biological Activities ◽  
Psidium Guajava

scholarly journals Comparative Evaluation of Essential Oils from Medicinal-Aromatic Plants of Greece: Chemical Composition, Antioxidant Capacity and Antimicrobial Activity against Bacterial Fish Pathogens

Molecules ◽  
2019 ◽  
Vol 25 (1) ◽  
pp. 148 ◽  
Author(s):  
Thekla I. Anastasiou ◽  
Manolis Mandalakis ◽  
Nikos Krigas ◽  
Thomas Vézignol ◽  
Diamanto Lazari ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Antioxidant Capacity ◽  
Antioxidant Properties ◽  
In Vitro Assays ◽  
Aromatic Plants ◽  
Farmed Fish ◽  
Fish Pathogens ◽  
Antioxidant Agents ◽  
The Impact

The administration of antibiotics in aquaculture has raised concern about the impact of their overuse in marine ecosystems, seafood safety and consumers’ health. This “green consumerism” has forced researchers to find new alternatives against fish pathogens. The present study focused on 12 Mediterranean medicinal-aromatic plants as potential antimicrobials and antioxidant agents that could be used in fish aquaculture. In vitro assays showed that the essential oils (EOs) from all studied plants had anti-bacterial and antioxidant properties, with their efficacy being dependent on their chemical composition. More specifically, EOs rich in carvacrol, p-cymene and γ-terpinene exhibited not only the strongest inhibitory activity against the growth of bacterial pathogens (inhibitory concentration: 26–88 μg mL−1), but also the greatest total antioxidant capacity (ABTS: 2591–5879 μmole mL−1; CUPRAC: 931–2733 μmole mL−1). These compounds were mainly found in the EOs from Greek oregano (Origanum vulgare subsp. hirtum), Spanish oregano (Thymbra capitata) and savoury (Satureja thymbra) collected from cultivations in Greece. The specific EOs stand out as promising candidates for the treatment of bacterial diseases and oxidative stress in farmed fish. Further in vivo experiments are needed to fully understand the effects of EO dietary supplementation on fish farming processes.

scholarly journals Chemical composition, antimicrobial and antioxidant properties of the essential oils of Tulbaghia violacea Harv L.F.

2013 ◽  
Vol 7 (18) ◽  
pp. 1787-1793 ◽  
Author(s):  
S Soyingbe O ◽  
O Oyedeji A ◽  
K Basson A ◽  
Singh M ◽  
R Opoku A
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Antioxidant Properties

scholarly journals Essential oils from Elaeoselinum asclepium: Chemical composition, antimicrobial and antioxidant properties

2016 ◽  
Vol 6 (10) ◽  
pp. 851-857 ◽  
Author(s):  
Moufida Bouchekrit ◽  
Hocine Laouer ◽  
Mohamed Hajji ◽  
Moncef Nasri ◽  
Serkos Artin Haroutounian ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Antioxidant Properties

Chemical composition, antioxidant, and antimicrobial activities of two essential oils from Algerian propolis

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Safia Boulechfar ◽  
Amar Zellagui ◽  
Meltem Asan-Ozusaglam ◽  
Chawki Bensouici ◽  
Ramazan Erenler ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Pathogenic Bacteria ◽  
Antioxidant Properties ◽  
Antimicrobial Activities ◽  
Gas Chromatography Mass Spectrometry ◽  
Diffusion Method ◽  
Reducing Ability ◽  
Antioxidant And Antimicrobial Activity ◽  
Fungistatic Effect

Abstract This study aims to investigate the chemical composition, antioxidant, and antimicrobial activity of two essential oils (EOs) from Algerian propolis. The volatile constituents were analyzed by gas chromatography-mass spectrometry. Fifty components were identified from the oils. The major components were found to be: cedrol (17.0%), β-eudesmol (7.7%), and α-eudesmol (6.7%) in EO of propolis from Oum El Bouaghi (EOPO) whilst α-pinene (56.1%), cis-verbenol (6.0%), and cyclohexene,3-acetoxy-4-(1-hydroxy-1-methylethyl)-1-methyl (4.4%) in EO of propolis from Batna (EOPB). The antioxidant properties of EOPO and EOPB were determined using 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS•+) and cupric reducing antioxidant capacity (CUPRAC assays), respectively. Both EOs had more cupric ion reducing ability than scavenging ABTS•+ radicals. The antimicrobial potential of the two EOs against eight pathogens was assayed by the agar diffusion method and the mode of action was determined by microdilution assay. The results revealed that EOPB was bactericidal for all tested pathogenic bacteria and fungicidal for Candida albicans ATCC 10231, whereas, EOPO showed bacteriostatic effect against Escherichia coli O157:H7 and Pseudomonas aeruginosa ATCC27853 and fungistatic effect against C. albicans ATCC 10231. Thus, the obtained results suggest the important use of propolis EOs as preservative agents.

Chemical composition and antibacterial and antioxidant properties of commercial essential oils

2013 ◽  
Vol 43 ◽  
pp. 587-595 ◽  
Author(s):  
Bárbara Teixeira ◽  
António Marques ◽  
Cristina Ramos ◽  
Nuno R. Neng ◽  
José M.F. Nogueira ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Antioxidant Properties

scholarly journals Chemical composition and antioxidant activity of essential oil of Cymbopogon flexuosus

2020 ◽  
Vol 12 (1) ◽  
pp. 25-29
Author(s):  
Anju Bhatnagar
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Racemic Mixture ◽  
Oil Composition ◽  
Cymbopogon Flexuosus ◽  
Ic50 Value

Cymbopogon species from the Poaceae family are widely distributed in the Himalayan region of India and commonly used as flavors, fragrances, cosmetics, and pharmaceuticals. It is known to contain compound citral, which give the lemon scent to many of the plants of the cymbopogon genera. The essential oil of  Cymbopogon flexuosus has high polyphenolic content which is responsible for antioxidant properties.  Beside citral is also used for the synthesis of vitamin B and Ionones. The bioactive potential of Lemongrass and constituent are rapidly increasing which is reflected from growing number of reports being published.  The present study was to know the chemical composition and in vitro antioxidant activity of essential oil of C. flexuosus from Uttarakhand. The essential oils of Cymbopogon collected in the region of Uttarakhand were obtained by hydrodistillation of the leaves and analyzed for chemical composition by GC/MS. The antioxidant activity of essential oils at different concentrations was determined against DPPH radical activity and vitamin C as the standard antioxidant compound.  The IC50    value and percentage of DPPH inhibition were recorded.  Twenty-five compounds were identified in essential oil extracted from leaves representing 93.15% of the oil composition. The yield of essential oil of Cymbopogon was 0.6 + 0.1 %and the major compound in the essential oil was citral (a racemic mixture of two isoforms geranial and nearl) followed by heptenone(1.98%) , linalool(1.65%), geraniol (1.47%), ?-caryophyllene (1.14% ) , limonene (0.92%),  nearl acetate (0.82%), citronellal(0.44 %) and citronellol (0.22%). Radical scavenging capacity (Inhibition, %) of the C. flexuosus essential oil was high (78.19+1.11) at the concentration level of 150 ?g/ml and  IC50 value of the essential oil was 43.67?g/ml.  The data of this study encourages to consider the essential oil of C. flexuosus  as a source of bioactive compounds which may add great industrial value to this crop.

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