scholarly journals Chemical Characterization, Antibacterial and Antioxidant Activities of Essential Oils of <i>Mentha viridis</i> L. and <i>Mentha pulegium</i> L. (L)

2015 ◽  
Vol 06 (05) ◽  
pp. 666-675 ◽  
Author(s):  
Lucilene Fernandes Silva ◽  
Maria das Graças Cardoso ◽  
Luís Roberto Batista ◽  
Marcos de Souza Gomes ◽  
Leonardo Milani Avelar Rodrigues ◽  
...  
Keyword(s):  
Essential Oils ◽  
Antioxidant Activities ◽  
Chemical Characterization ◽  
Mentha Pulegium

Chemical composition of Mentha pulegium and Rosmarinus officinalis essential oils and their antileishmanial, antibacterial and antioxidant activities

2017 ◽  
Vol 111 ◽  
pp. 41-49 ◽  
Author(s):  
Abdelhakim Bouyahya ◽  
Abdeslam Et-Touys ◽  
Youssef Bakri ◽  
Ahmed Talbaui ◽  
Hajiba Fellah ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Antioxidant Activities ◽  
Rosmarinus Officinalis ◽  
Mentha Pulegium

scholarly journals Untargeted Metabolomics of Rind Essential Oils Allowed to Differentiate Two Closely Related Clementine Varieties

Plants ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1789
Author(s):  
María del Carmen González-Mas ◽  
José L. Rambla ◽  
Aurelio Gómez-Cadenas ◽  
María Amparo Blázquez ◽  
María Pilar López-Gresa ◽  
...  
Keyword(s):  
Essential Oils ◽  
Antioxidant Activities ◽  
Citrus Fruit ◽  
Chemical Characterization ◽  
Food Preservation ◽  
Untargeted Metabolomics ◽  
Variety Identification ◽  
Volatile Profiles ◽  
Citrus Varieties

Chemical characterization of clementine varieties (Citrus clementina Hort. ex Tan.) essential oils (EO) can lead to variety identification and valorization of their potential use in food and aroma industries. The goal of this study was the chemometric discrimination between two very closely related and morphologically identical clementine varieties, Clemenules (NL) and Clemenpons (PO), based on their rind EO, to identify the differential volatile organic compounds (VOCs) and to determine their antioxidant capacity. EO rind volatile profile was determined by gas chromatography coupled to mass spectrometry in Citrus fruit at different ripening stages grown two independent years in two different locations. Untargeted metabolomics and multivariate data analysis showed an evolution of EO volatile profiles markedly parallel in both varieties. Although EO qualitative composition was identical in both varieties, PLS-DA allowed the identification of characteristic VOCs, quantitatively discriminating them along all the ripening process. PO showed higher accumulation of several mono- and sesquiterpene compounds such as trans-carveol, while NL showed higher levels of aldehyde and alcohol non-terpenoids like dodecanal. Both varieties evinced identical EO antioxidant activities, indicating a similar value for food preservation. Hence, untargeted metabolomics approach based on rind EO volatiles was revealed as a powerful technique able to differentiate between morphologically undistinguishable Citrus varieties.

Composition of essential oil and antioxidant activity of Khat (Catha edulis Forsk), Ethiopia

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Gas Chromatography ◽  
Essential Oils ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Gas Chromatography Mass Spectrometry ◽  
Bahir Dar ◽  
Dpph Radical ◽  
Catha Edulis

In this study, we determined the chemical composition and antioxidant activities of the essential oils from two different varieties of khat (Catha edulis Forsk) cultivated in Ethiopia. The essential oils were extracted by hydrodistillation using the Clevenger type apparatus, identifications of compounds were made by gas chromatography and gas chromatography-mass spectrometry (GC-MS). Seventy seven different compounds were identified from essential oils of the two different khat cultivars. The essential oils in the samples from Bahir Dar and Wendo were composed of 50 and 34 compounds, respectively. The major compound identified in khat essentials oils include: limonene, 1-phenyl-1,2-propanedione, 1-hydroxy,1-phenyl-2-propanone, camphor, (sulfurous acid)-2-propylundecyl ester, hexadecane, O-mentha-1(7), 8-dien-3-ol, heptadecane, 10-methylnonadecane, (phthalic acid)-isobutyl octadecyl ester, and tritetracontane. The antioxidant and free radical scavenging activity of the oils were assessed by means of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical assay. The scavenging activities of the oils were 23.5-23.6 μg AAE/kg of fresh khat sample.

Chemical variability and antioxidant activities of the essential oils of the aerial parts of Ammoides verticillata and the roots of Carthamus caeruleus and their synergistic effect in combination

2020 ◽  
Vol 23 ◽  
Author(s):  
Imane Rihab Mami ◽  
Noria Merad-Boussalah ◽  
Mohammed El Amine Dib ◽  
Boufeldja Tabti ◽  
Jean Costa ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Natural Food ◽  
Chemical Compositions ◽  
Chemical Variability ◽  
Ammoides Verticillata

Aim and Objective: Oxidative stress is implicated in the development and progression of many disease. Some of appropriate actions that could be initiated to taken to resolve the problem of these diseases are search for new antioxidant substances isolated from plants. The aims of this study were to study the intraspecies variations of A. verticillata and C. caeruleus essential oils from 8 locations using statistical analysis, the in vitro antioxidant properties of collective essential oils and in combinations. Materials and Methods: The essential oils were analyzed by GC and GC-MS. The intraspecies variations of the essential oil compositions were discussed using principal component analysis (PCA) and cluster analysis (CA). The antioxidant properties were evaluated DPPH-radical scavenging activity and β-carotene bleaching test. Results: The main components of Ammoides verticillata collective essential oil (Coll EO) were thymol (30.5%), carvacrol (23.2%), p-cymene (13.1%), limonene (12.5%) and terpinene-4-ol (12.3%). While roots of Carthamus caeruleus essential oil were dominated by carline oxide (86.2%). The chemical variability allowed the discrimination of two main Groups for both Coll EOs. A direct correlation between the altitudes, climate and the chemical compositions was evidenced. Ammoides verticulata and Carthamus caeruleus Coll Eos showed good antioxidant activity. In binary mixture, the interaction both Coll Eos and between oils rich of thymol and/or carvacrol with carlina oxide produced the best synergistic effects, compared to individual essential oils and the synthetic antioxidant (BHT). Conclusion: Ammoides verticillata and Carthamus caeruleus essential oil blends can be used as a natural food preservative and alternative to chemical antioxidants.

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