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

Bouzidi, Laila El; Jamali, Chaima Alaoui; Bekkouche, Khalid; Hassani, Lahcen; Wohlmuth, Hans; Leach, D. L.; Abbad, Abdelaziz

doi:10.1016/j.indcrop.2012.07.063

Cited by 124 publications

(83 citation statements)

References 33 publications

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“…There are few studies on EO composition of T. broussonnetii in the literature. In previous studies, T. broussonnetii EOs extracted from Moroccan samples showed high levels of carvacrol, thymol, borneol, and p-cymene (Jaafari et al, 2007;Saad et al, 2010;El Bouzidi et al, 2013;El Ouariachi et al, 2014). This great variability in the chemical composition of T. broussonnetii EOs obtained from Moroccan samples can be most probably explained by the variability of the plant subspecies and the existence of different chemotypes.…”

Section: Discussionmentioning

confidence: 87%

Chemical characterization and antifungal activities of four Thymus species essential oils against postharvest fungal pathogens of citrus

Boubaker

Karim

Hamdaoui

et al. 2016

Industrial Crops and Products

123

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Section: Discussionmentioning

confidence: 87%

Chemical characterization and antifungal activities of four Thymus species essential oils against postharvest fungal pathogens of citrus

Boubaker

Karim

Hamdaoui

et al. 2016

Industrial Crops and Products

123

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“…1), higher than that BHT for high concentrations (600-1000 mg/L), the oil previously cited (2-h extraction duration) was also the most efficient to reduce Fe 3+ to Fe 2+ . The in vitro antioxidant activity of the essential oils of several Thymus species has been reported previously [42,43], and this activity has been attributed mainly to their content of phenolic components, especially thymol and carvacrol [44], and the strong radical scavenging activity of these compounds is well established [45,46]. Although the oils had close sums of these two compounds, there were some discrepancies between their antioxidant activities.…”

Section: Antioxidant Activitymentioning

confidence: 95%

Influence of Extraction Duration on the Chemical Composition and Biological Activities of Essential Oil of Thymus pallescens de Noé

et al. 2015

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Thymus pallescens de Noé essential oils were isolated from the plant's dried leaves, by hydrodistillation, with different distillation times (30 min, 1, 2 and 3 h). The essential oils compositions and their antioxidant, antimicrobial and insecticidal activities were examined. The chemical compositions of the oils were determined by GC and GC-MS. The antioxidant capacity was tested by four complementary methods: thiobarbituric acid reactive substances, ferric reducing power and scavenging of radicals DPPH • (2,2-diphenyl-1-picrylhydrazyl) and ABTS •+ [2,2 -azino-bis (3-ethylbenzthiazoline-6-sulfonic acid)]. The antimicrobial activity was tested against three bacteria, two gram-positive (Staphylococcus aureus and Bacillus subtilis) and one gram-negative (Escherichia coli) and one yeast (Candida albicans). The insecticidal activity against confused flour beetle Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae) was evaluated using direct contact application and fumigant method. The predominant components in the oils were carvacrol (63.3-68.2 %), γ -terpinene (6.9-9.1 %), p-cymene (6.2-10.3 %) and thymol (6.5-7.5 %). The antioxidant activities were dependent on the time of hydrodistillation and the method used. The essential oils extracted for 30 min and 1 h were the most efficient against all the bacteria used. Toxicity tests against T. con-B Mohamed Hazzit

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“…The antifungal activities of essential oils are generally strongly associated with monoterpenic phenols, and especially thymol, carvacrol and eugenol (Bluma et al 2008). Both thymol and carvacrol are also present in thyme essential oil and they are characterised by their high antimicrobial activity (Bouzidi et al 2013, and references therein, Gonçalves et al 2010, So kovič et al 2009, Šegvić Klarić et al 2007). Chemical analysis of the thyme essential oil used in the present study has shown that the major constituent is indeed thymol (68.9%), whereas carvacrol constitutes only 1.6% (An žlo var et al 2014).…”

Section: Discussionmentioning

confidence: 99%

“…essential oils and extracts (Bouzidi et al 2013, Gonçalves et al 2010, Soković et al 2009, Solomakos et al 2008. In a previous study, we reported that the essential oil from common thyme (Thymus vulgaris) shows promising antibacterial and antifungal activities against foodborne isolates of a Fusarium sp.…”

Section: Introductionmentioning

confidence: 98%

Antifungal potential of thyme essential oil as a preservative for storage of wheat seeds

Anžlovar¹,

Likar²,

Koce³

2017

Acta Botanica Croatica

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-Plant essential oils are potential food preservatives due to their inhibitory effects on bacterial and fungal growth. Antifungal activities of common thyme (Thymus vulgaris) essential oil were tested against endophytic fungi grown from wheat (Triticum aestivum) grain, molecularly identifi ed as Alternaria alternata, Alternaria infectoria, Aspergillus fl avus, Epicoccum nigrum and Fusarium poae. Their susceptibility to thyme essential oil was tested in vitro, and ranged from fungicidal to fungistatic. Treatment combinations of prior grain surface sterilization with hypochlorite and direct/indirect treatment with the essential oil were used, which showed strong effects on infection incidence and germination. Direct soaking of the wheat grain in the essential oil was particularly effective, but inhibited both fungal growth and seed germination. In contrast, indirect treatment of the grain with the essential oil (i.e., fumigation) inhibited fungal growth without negative effects on seed germination. In combination with grain surface sterilization with hypochlorite, indirect treatment with thyme essential oil reduced these fungal infections even more. Since thyme essential oil is safe for plants and consumers, in the form of fumigation it could be used as a protectant of storage containers for wheat grain intended for sowing and for food production.

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

Cited by 124 publications

References 33 publications

Chemical characterization and antifungal activities of four Thymus species essential oils against postharvest fungal pathogens of citrus

Chemical characterization and antifungal activities of four Thymus species essential oils against postharvest fungal pathogens of citrus

Influence of Extraction Duration on the Chemical Composition and Biological Activities of Essential Oil of Thymus pallescens de Noé

Antifungal potential of thyme essential oil as a preservative for storage of wheat seeds

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