scholarly journals Chemical Composition and Antioxidant Activity of Essential Oils from Leaves of Two Specimens of Eugenia florida DC.

Molecules ◽  
2021 ◽  
Vol 26 (19) ◽  
pp. 5848
Author(s):  
Oberdan Oliveira Ferreira ◽  
Celeste de Jesus Pereira Franco ◽  
Everton Luiz Pompeu Varela ◽  
Sebastião Gomes Silva ◽  
Márcia Moraes Cascaes ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Antioxidant Capacity ◽  
Secondary Forest ◽  
Folk Medicine ◽  
Gastrointestinal Problems ◽  
Trolox Equivalent ◽  
Almost All ◽  
Floodplain Area

Eugenia florida DC. belongs to the Myrtaceae family, which is present in almost all of Brazil. This species is popularly known as pitanga-preta or guamirim and is used in folk medicine to treat gastrointestinal problems. In this study, two specimens of Eugenia florida (Efl) were collected in different areas of the same region. Specimen A (EflA) was collected in an area of secondary forest (capoeira), while specimen B (EflB) was collected in a floodplain area. The essential oils (EOs) were extracted from both specimens of Eugenia florida by means of hydrodistillation. Gas chromatography coupled to mass spectrometry (GC/MS) was used to identify the volatile compounds present, and the antioxidant capacity of the EOs was determined by antioxidant capacity (AC-DPPH) and the Trolox equivalent antioxidant (TEAC) assay. For E. florida, limonene (11.98%), spathulenol (10.94%) and α-pinene (5.21%) were identified as the main compounds of the EO extracted from sample A, while sample B comprised selina-3,11-dien-6α-ol (12.03%), eremoligenol (11.0%) and γ-elemene (10.70%). This difference in chemical composition impacted the antioxidant activity of the EOs between the studied samples, especially in sample B of E. florida. This study is the first to report on the antioxidant activity of Eugenia florida DC. essential oils.

scholarly journals Chemical Composition and Antioxidant Activity of Essential Oils from Eugenia patrisii Vahl, E. punicifolia (Kunth) DC., and Myrcia tomentosa (Aubl.) DC., Leaf of Family Myrtaceae

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3292
Author(s):  
Celeste de Jesus Pereira Franco ◽  
Oberdan Oliveira Ferreira ◽  
Ângelo Antônio Barbosa de Moraes ◽  
Everton Luiz Pompeu Varela ◽  
Lidiane Diniz do Nascimento ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Antioxidant Capacity ◽  
Trolox Equivalent Antioxidant Capacity ◽  
Germacrene D ◽  
Trolox Equivalent ◽  
Collection Period ◽  
High Inhibition

Essential oils (EOs) were extracted from Eugenia patrisii, E. punicifolia, and Myrcia tomentosa, specimens A and B, using hydrodistillation. Gas chromatography coupled with mass spectrometry (GC/MS) was used to identify the volatile constituents present, and the antioxidant capacity of EOs was determined using diphenylpicryl-hydrazyl (DPPH) and trolox equivalent antioxidant capacity (TEAC) assays. For E. patrisii, germacrene D (20.03%), bicyclogermacrene (11.82%), and (E)-caryophyllene (11.04%) were identified as the major constituents of the EOs extracted from specimen A, whereas specimen B primarily comprised γ-elemene (25.89%), germacrene B (8.11%), and (E)-caryophyllene (10.76%). The EOs of E. punicifolia specimen A contained β-Elemene (25.12%), (E)-caryophyllene (13.11%), and bicyclogermacrene (9.88%), while specimen B was composed of (E)-caryophyllene (11.47%), bicyclogermacrene (5.86%), β-pinene (5.86%), and γ-muurolene (5.55%). The specimen A of M. tomentosa was characterized by γ-elemene (12.52%), germacrene D (11.45%), and (E)-caryophyllene (10.22%), while specimen B contained spathulenol (40.70%), α-zingiberene (9.58%), and γ-elemene (6.89%). Additionally, the chemical composition of the EOs was qualitatively and quantitatively affected by the collection period. Furthermore, the EOs of the studied specimens, especially specimen A of E. punicifolia, showed a greater antioxidant activity in DPPH rather than TEAC, as represented by a significantly high inhibition percentage (408.0%).

scholarly journals Chemical composition and antioxidant activity of essential oils of Thymus broussonetii Boiss. and Thymus algeriensis Boiss. from Morocco

2014 ◽  
Vol 4 (4) ◽  
pp. 281-286 ◽  
Author(s):  
El mokhtar El Ouariachi ◽  
Imad Hamdani ◽  
Abdelhamid Bouyanzer ◽  
Belkheir Hammouti ◽  
Lhou Majidi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Thymus Algeriensis

Comparison of the Chemical Composition and Antioxidant Activity of Essential Oils from the Leaves and Flowers of Sambucus nigra

2020 ◽  
Vol 54 (5) ◽  
pp. 496-503
Author(s):  
Marcin Szymański ◽  
Marlena Dudek-Makuch ◽  
Ewa Witkowska-Banaszczak ◽  
Wiesława Bylka ◽  
Arkadiusz Szymański
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Sambucus Nigra

Chemical composition, antimicrobial activity and antioxidant activity of Litsea cubeba essential oils in different months

2019 ◽  
Vol 34 (22) ◽  
pp. 3285-3288 ◽  
Author(s):  
Qi-Hui She ◽  
Wen-Shuang Li ◽  
Yuan-Yuan Jiang ◽  
Yi-Chao Wu ◽  
Yong-Hong Zhou ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
Litsea Cubeba

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 and antioxidant activity of essential oils isolated from Colombian plants

2010 ◽  
Vol 20 (4) ◽  
pp. 568-574 ◽  
Author(s):  
Jesús Olivero-Verbel ◽  
Tulia González-Cervera ◽  
Jorge Güette-Fernandez ◽  
Beatriz Jaramillo-Colorado ◽  
Elena Stashenko
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oils
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