scholarly journals Antioxidant and Antimicrobial Activities of 7-Hydroxy-calamenene-Rich Essential Oils from Croton cajucara Benth.

Molecules ◽  
2013 ◽  
Vol 18 (1) ◽  
pp. 1128-1137 ◽  
Author(s):  
Mariana Azevedo ◽  
Francisco Chaves ◽  
Catia Almeida ◽  
Humberto Bizzo ◽  
Rafael Duarte ◽  
...  
Keyword(s):  
Essential Oils ◽  
Antimicrobial Activities ◽  
Antioxidant And Antimicrobial Activities ◽  
Croton Cajucara

scholarly journals Chemical Composition and Antioxidant and Antimicrobial Activities of Wormwood (Artemisia absinthiumL.) Essential Oils and Phenolics

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Kamel Msaada ◽  
Nidhal Salem ◽  
Olfa Bachrouch ◽  
Slim Bousselmi ◽  
Sonia Tammar ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Essential Oil ◽  
Essential Oils ◽  
Methanolic Extract ◽  
Biological Activities ◽  
Reducing Power ◽  
Antimicrobial Activities ◽  
Gas Chromatography Mass Spectrometry ◽  
Oil Composition ◽  
Antioxidant And Antimicrobial Activities

The aim of this study was to determine the chemical variability of wormwood extracts as affected by the growing region. Antioxidant and antimicrobial activities were also investigated. The essential oil composition variability ofA. absinthiumL. aerial parts collected from four different Tunisian regions was assessed by gas chromatography (GC/FID) and by gas chromatography mass spectrometry (GC/MS). In addition, total polyphenols, flavonoids, and condensed tannins as well as antioxidant, antibacterial, and antifungal activities of methanolic extract and essential oils were undertaken. Chromatographic analysis of wormwood essential oils showed the predominance of monoterpene hydrocarbons represented mainly by chamazulene. RP-HPLC analysis of wormwood methanolic extract revealed the predominance of phenolic acids. Antiradical activity was region-dependant and the methanolic extract of Bou Salem region has the strongest activity (CI50=9.38±0.82 µg/mL). Concerning the reducing power, the methanolic extract of Bou Salem, Jérissa, and Boukornine regions was more active than the positive control. Obtained results of antimicrobial activities showed that wormwood essential oil is endowed with important antibacterial activity which was strongly related to the organoleptic quality of oil which appeared strongly region-dependant.A. absinthiumL. EOs investigated are quite interesting from a pharmaceutical standpoint because of their biological activities.

scholarly journals Volatile Compounds and Antioxidant and Antimicrobial Activities of Selected Citrus Essential Oils Originated from Nepal

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6683
Author(s):  
Devi Prasad Bhandari ◽  
Darbin Kumar Poudel ◽  
Prabodh Satyal ◽  
Karan Khadayat ◽  
Sital Dhami ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Citrus Sinensis ◽  
Antioxidant Properties ◽  
Antimicrobial Activities ◽  
Gas Chromatography Mass Spectrometry ◽  
Diffusion Method ◽  
Citrus Species ◽  
Citrus Peel ◽  
Antioxidant And Antimicrobial Activities

Citrus species of plants are among the most commercially cultivated crops, mainly for their fruit. Besides, the generally consumed flesh inside the fruit, the peel is quite important too. Essential oils extracted from the peel have a history of being used by humankind for centuries. These essential oils are rich in antioxidants and antimicrobial agents. Comparative investigation of volatile constituents, and antioxidant and antimicrobial activities were undertaken. The essential oils were evaluated through gas chromatography-mass spectrometry (GC–MS), and enantiomeric composition by chiral GC–MS. Similarly, the antioxidant properties were evaluated by 2,2-diphenyl-1-picrylhydrazyl scavenging assay, and antimicrobial activities were assayed using the disk diffusion method. The highest extraction yield of 1.83% was observed in Citrus sinensis Osbeck. GC–MS analysis showed limonene (63.76–89.15%), γ-terpinene (0.24–6.43%), β-pinene (0.15–6.09%), linalool (0.35–3.5%), sabinene (0.77–2.17%), myrcene (0.74–1.75%), α-terpineol (0.28–1.15%), and α-pinene (0.2–0.58%) as the major constituents of the essential oil of the Citrus species studied. For the first time, through our study, chiral terpenoids have been observed from Citrus grandis Osbeck essential oil. The order of antioxidant activity is as follows: Citrus grandis Osbeck red flesh > Citrus reticulata Blanco > Citrus sinensis Osbeck > Citrus grandis Osbeck white flesh. Except for Citrus grandis Osbeck white flesh (52.34 µL/mL), all samples demonstrated stronger antioxidant activities than those of the positive control, quercetin (5.60 µL/mL). Therefore, these essential oils can be used as a safe natural antioxidant to prevent product oxidation. Likewise, citrus peel essential oil showed antimicrobial activity against tested bacterial strains, albeit marginal.

MALAGASY AROMATIC PLANTS: ESSENTIAL OILS, ANTIOXIDANT AND ANTIMICROBIAL ACTIVITIES

2004 ◽  
pp. 77-81 ◽  
Author(s):  
H.R. Juliani ◽  
J.E. Simon ◽  
M.M.R. Ramboatiana ◽  
O. Behra ◽  
A. Garvey ◽  
...  
Keyword(s):  
Essential Oils ◽  
Antimicrobial Activities ◽  
Aromatic Plants ◽  
Antioxidant And Antimicrobial Activities

Phytochemistry, antioxidant and antimicrobial activities of the essential oils of Mentha rotundifolia L. in Tunisia

2013 ◽  
Vol 49 ◽  
pp. 883-889 ◽  
Author(s):  
Leila Riahi ◽  
Myriam Elferchichi ◽  
Hanene Ghazghazi ◽  
Jed Jebali ◽  
Sana Ziadi ◽  
...  
Keyword(s):  
Essential Oils ◽  
Antimicrobial Activities ◽  
Antioxidant And Antimicrobial Activities

scholarly journals Chemical Compositions, Antioxidant and Antimicrobial Activities of Essential Oils of Piper caninum Blume

2011 ◽  
Vol 12 (11) ◽  
pp. 7720-7731 ◽  
Author(s):  
Wan Mohd Nuzul Hakimi Wan Salleh ◽  
Farediah Ahmad ◽  
Khong Heng Yen ◽  
Hasnah Mohd Sirat
Keyword(s):  
Essential Oils ◽  
Antimicrobial Activities ◽  
Chemical Compositions ◽  
Antioxidant And Antimicrobial Activities

Chemical composition, antioxidant and antimicrobial activities of essential oils obtained from wild and cultivated Moroccan Thymus species

2013 ◽  
Vol 43 ◽  
pp. 450-456 ◽  
Author(s):  
Laila El Bouzidi ◽  
Chaima Alaoui Jamali ◽  
Khalid Bekkouche ◽  
Lahcen Hassani ◽  
Hans Wohlmuth ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Antimicrobial Activities ◽  
Antioxidant And Antimicrobial Activities

scholarly journals Detection of Antioxidant and Antimicrobial Activities in Phenol Components and Essential oils of Cistus ladaniferus and Mentha suaveolens extracts

2020 ◽  
Vol 13 (02) ◽  
pp. 603-612
Author(s):  
Taoufiq Benali ◽  
Houda Chtibi ◽  
Abdelhakim Bouyahya ◽  
Abdelmajid Khabbach ◽  
Khalil Hammani
Keyword(s):  
Essential Oils ◽  
Antimicrobial Activities ◽  
Antioxidant And Antimicrobial Activities
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