Phytochemical screening and antimicrobial activity of extracts of Thymus serpyllum and Thymus vulgaris from the mount of Tessala (Western Algeria)

Tamert, A.; Latreche, Ali; Aouad, L.

doi:10.1007/s10298-017-1132-1

Cited by 6 publications

(7 citation statements)

References 33 publications

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“…In addition, similar results have been found in other works, in which it was reported that flavonoids from Thymus vulgaris are used as an antibiotic against different pathologies [40,41]. Thymus vulgaris has several medical uses, including the treatment of intestinal infections [42] and gastric inflammation [43,44]. Importantly, the analysis of the essential oils of thymus vulgaris through the use of GC showed the richness of its oils in thymol and carvacrol, which are involved in the antimicrobial effect of this plant [45].…”

Section: • Thymus Vulgarissupporting

confidence: 86%

The Impact of Environmental Stress on the Secondary Metabolites and the Chemical Compositions of the Essential Oils from Some Medicinal Plants Used as Food Supplements

et al. 2023

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This study aims to study the impact of environmental stresses on the chemical compositions of essential oils and the content of secondary metabolites of the plants most used by the rural population: Thymus vulgaris, Mentha pulégium and Rosmarinus officinalis. The results of the study indicate that the percentage of secondary metabolites increased in the second year when temperature and water pressure increased by 50%. Specifically, coumarin increased from 3.94% to 9.23%, saponins increased from 6.17% to 7.78%, tannins increased from 2.90% to 6.12%, alkaloids increased from 6.72% to 15.95%, and flavonoids increased from 7.42% to 12.90%. However, in the fourth year, the temperature continued to increase, and water availability decreased by 75%, leading to a decrease in the rate of secondary metabolites. Coumarin decreased from 9.22% to 6.15%, saponin decreased from 7.80% to 6.79%, tannin decreased from 6.11% to 4.16%, alkaloids decreased from 15.95% to 10.45%, and flavonoids decreased from 12.90% to 9.70%. Similar results were observed for the essential oil yield, which increased in year two from 3.57% to 3.84% and decreased in year four to 1.04%. The same pattern was observed for Mentha pulégium and Rosmarinus officinalis. The gas chromatography analysis of the three essential oil samples showed that the majority of the compounds of the three plants were modified under the conditions of climate change. For Mentha pulégium, pulegone was found to represent the highest proportion in sample two (73.3%), followed by sample one (71.1%), and finally, sample three (61.8%). For Rosmarinus officinalis, the majority of compounds were cineole and camphor, with cineole representing 36% in sample two, 45.89% in sample one, and 43.08% in sample three, and camphor representing 21.44% in sample two, 21.56% in sample three, and 17.44% in sample one. For Thymus vulgaris, the majority of the compounds were Thymol and Carvacrol, which underwent approximately the same modifications as the majority of compounds in the other two plants. The results indicate that environmental stresses can lead to significant changes in these compounds, which can affect the medicinal and aromatic properties of these plants. The findings of this study highlight the need for more research to understand the impacts of climate change on plant species and the potential implications for human health and well-being.

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Section: • Thymus Vulgarissupporting

confidence: 86%

The Impact of Environmental Stress on the Secondary Metabolites and the Chemical Compositions of the Essential Oils from Some Medicinal Plants Used as Food Supplements

et al. 2023

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“…Oses and holosides screening was done following the method of Tamert et al [ 57 ]. Two to three drops of concentrated sulfuric acid were added to 1 mL of each extract; after 5 min we added 3 to 4 drops of ethanol saturated with thymol.…”

Section: Methodsmentioning

confidence: 99%

“…Mucilage was detected by the formation of a fluffy precipitate as described by Tamert et al [ 57 ]. In brief, 5 mL of absolute ethanol added to 1 mL of each extract.…”

Section: Methodsmentioning

confidence: 99%

Phytochemical Screening, Antioxidant and Antibacterial Activities of Pollen Extracts from Micromeria fruticosa, Achillea fragrantissima, and Phoenix dactylifera

Sadeq

Mechchate

Es-safi

et al. 2021

Plants

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Pollen is a male flower gametophyte located in the anthers of stamens in angiosperms and a considerable source of compounds with health protective potential. In the present work, phytochemical screening was carried out as well as analysis of the antioxidant and antibacterial properties of pollen extracts from Micromeria fruticosa, Achillea fragrantissima, and Phoenix dactylifera growing wild in Palestine. Phytochemical screening examined the total flavonol, flavone and phenolic content. The DPPH (1,2-Diphenyl-1-Picrylhydrazyl) and FRAP (ferric reducing antioxidant power) methods were used to assess antioxidant propriety, and disc diffusion, minimum inhibitory and bactericidal concentration tests were used to test the pollen extract’s antibacterial activity against multidrug-resistant (MDR) clinical isolates. The highest level of total phenolic was found in the extract of Micromeria fruticosa (56.78 ± 0.49 mg GAE (Gallic Acid Equivalent)/g). The flavone and flavonol content of samples ranged from 2.48 ± 0.05 to 8.03 ± 0.01 mg QE (Quercetin Equivalent)/g. Micromeria fruticosa pollen with IC50 values of 0.047 and 0.039 mg/mL in the DPPH and FRAP assays, respectively, showed the greatest radical scavenging action. In addition, this pollen showed a mild antibacterial action against the microorganisms studied, with MICs varying from 0.625 to 10 mg/mL and inhibition diameters ranging from 13.66 ± 1.5 to 16.33 ± 1.5 mm.

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“…The purpose of phytochemical screening is to detect the presence of large classes of secondary metabolites present in each extract. Thus, the presence of secondary compounds such as flavonoids, coumarines, anthraquinones, tannins, terpenoids, saponosides and alkaloids was sought using the methods described by [11].…”

Section: Phytochemical Screeningmentioning

confidence: 99%

Evaluation of Subacute Toxicity of Hydroethanolic Extracts Combinations from <i>Gnetum africanum</i> (Welv.) and <i>Gnetum buchholzianum</i> (Engl.) (Genetaceae) Leaves: Two Botanical with Antiproliferative and Antioxidant Potential

Enone¹,

Ngene²,

Fondjo³

et al. 2022

OJAppS

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This study was conducted to assess the toxic effect of hydroethanolic extract combinations of Gnetum africanum Welv. leaves and Gnetum buchholzianum Engl. (Gnetaceae) in experimental rats to test the validity of the treatment of liver disorders related to oxidative stress. The Combinations (m/m) 50-50 for E2 and 75-25 for E3 of ethanol-water extracts from plant leaves at the respective doses of 100, 200, and 400 mg/kg of body weight were used for 32-day toxicity. They were obtained after harvesting leaves, sorting, drying in the air cover for three weeks, and grinding. The resulting powder was doubly macerated with 70% ethanol for 48 hours and filtered. The filtrate was concentrated with the Heidolph-brand rotary rotavapor and each extract obtained was preserved. The administrations were carried out by gavage to wistar, male and non-pregnant female albino rats. In the end, the animals were sacrificed. The serum and organ homogenates were obtained for biochemical,

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Phytochemical screening and antimicrobial activity of extracts of Thymus serpyllum and Thymus vulgaris from the mount of Tessala (Western Algeria)

Cited by 6 publications

References 33 publications

The Impact of Environmental Stress on the Secondary Metabolites and the Chemical Compositions of the Essential Oils from Some Medicinal Plants Used as Food Supplements

The Impact of Environmental Stress on the Secondary Metabolites and the Chemical Compositions of the Essential Oils from Some Medicinal Plants Used as Food Supplements

Phytochemical Screening, Antioxidant and Antibacterial Activities of Pollen Extracts from Micromeria fruticosa, Achillea fragrantissima, and Phoenix dactylifera

Evaluation of Subacute Toxicity of Hydroethanolic Extracts Combinations from <i>Gnetum africanum</i> (Welv.) and <i>Gnetum buchholzianum</i> (Engl.) (Genetaceae) Leaves: Two Botanical with Antiproliferative and Antioxidant Potential

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Phytochemical screening and antimicrobial activity of extracts of Thymus serpyllum and Thymus vulgaris from the mount of Tessala (Western Algeria)

Cited by 6 publications

References 33 publications

The Impact of Environmental Stress on the Secondary Metabolites and the Chemical Compositions of the Essential Oils from Some Medicinal Plants Used as Food Supplements

The Impact of Environmental Stress on the Secondary Metabolites and the Chemical Compositions of the Essential Oils from Some Medicinal Plants Used as Food Supplements

Phytochemical Screening, Antioxidant and Antibacterial Activities of Pollen Extracts from Micromeria fruticosa, Achillea fragrantissima, and Phoenix dactylifera

Evaluation of Subacute Toxicity of Hydroethanolic Extracts Combinations from &lt;i&gt;Gnetum africanum&lt;/i&gt; (Welv.) and &lt;i&gt;Gnetum buchholzianum&lt;/i&gt; (Engl.) (Genetaceae) Leaves: Two Botanical with Antiproliferative and Antioxidant Potential

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Evaluation of Subacute Toxicity of Hydroethanolic Extracts Combinations from <i>Gnetum africanum</i> (Welv.) and <i>Gnetum buchholzianum</i> (Engl.) (Genetaceae) Leaves: Two Botanical with Antiproliferative and Antioxidant Potential