Composition and antioxidant activity of <i>Thymus vulgaris</i> volatiles: Comparison between supercritical fluid extraction and hydrodistillation

Grosso, Clara; Figueiredo, A. Cristina; Burillo, Jesús; Mainar, Ana M.; Urieta, José S.; Barroso, José G.; Coelho, José Augusto Paixão; Palavra, A. M. F.

doi:10.1002/jssc.201000192

Cited by 77 publications

(56 citation statements)

References 35 publications

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“…The main volatile components obtained were p-cymene (63, Figure 14), γ-terpinene (53, Figure 11), linalool (32, Figure 7), thymol (73, Figure 16), and carvacrol (91). The main difference was found to be the relative percentage of thymoquinone (92) (not found in the essential oil) and carvacrol methyl ether (93) [4,101]. SFE at 40 °C and a working pressure of 12 or 18 MPa obtained volatile oil and extracts from the aerial parts of T. lotocephalus.…”

Section: Supercritical Fluid Extraction Of Fragrancesmentioning

confidence: 94%

Supercritical Fluid Extraction of Plant Flavors and Fragrances

2013

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Supercritical fluid extraction (SFE) of plant material with solvents like CO 2 , propane, butane, or ethylene is a topic of growing interest. SFE allows the processing of plant material at low temperatures, hence limiting thermal degradation, and avoids the use of toxic solvents. Although today SFE is mainly used for decaffeination of coffee and tea as well as production of hop extracts on a large scale, there is also a growing interest in this extraction method for other industrial applications operating at different scales. In this review we update the literature data on SFE technology, with particular reference to flavors and fragrance, by comparing traditional extraction techniques of some industrial medicinal and aromatic crops with SFE. Moreover, we describe the biological activity of SFE extracts by describing their insecticidal, acaricidal, antimycotic, antimicrobial, cytotoxic and antioxidant properties. Finally, we discuss the process modelling, mass-transfer mechanisms, kinetics parameters and thermodynamic by giving an overview of SFE potential in the flavors and fragrances arena.

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Section: Supercritical Fluid Extraction Of Fragrancesmentioning

confidence: 94%

Supercritical Fluid Extraction of Plant Flavors and Fragrances

2013

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“…Reports indicate that the primary pharmacological effects of thyme arise from thymol and carvacrol, which are the most important bioactive compounds that this plant contains (Aeschbach et al, 1994;Grigore et al, 2010). The antioxidant property of bioactive compounds in the composition of thyme were determined in the laboratory analysis (Grosso et al, 2010). It is well known that thymol and carvacrol not only have an antioxidant effect The Effect of Thyme Essential Oil (Thymus Vulgaris) Added to Quail Diets on Performance, Some Blood Parameters, and the Antioxidative Metabolism of the Serum and Liver Tissues but also antibacterial, antiviral and aroma regulatory effects (Aeschbach et al, 1994;Grossoet al, 2010).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Thyme Essential Oil (Thymus Vulgaris) Added to Quail Diets on Performance, Some Blood Parameters, and the Antioxidative Metabolism of the Serum and Liver Tissues

Gümüş

Ercan

İmik

2017

Rev. Bras. Cienc. Avic.

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This study was conducted to determine the effect of diets containing different levels of thyme essential oil (TEO) on performance, some serum parameters and the antioxidative metabolism of the serum and liver tissues in quails. A total number of 200 sixteen-days-old Japanese quails (Coturnix coturnix japonica) were used in the study. The animals were divided into 4 groups; the control group was fed only basal diet but groups TEO1, TEO2 and TEO3 had thyme essential oil of 150, 300 and 450 mg/kg, respectively, added to their diets. Body weight and daily weight gain increased with higher levels of thyme essential oil in the feed, yet a statistically significant increase was detected in only group TEO3 (p<0.05). Furthermore, in all of the groups that were fed on TEO, feed intake was significantly higher than that of the control group (p<0.05). In the groups that received thyme essential oil, serum creatinine and low-density lipoprotein (LDL) levels were low, whereas serum magnesium levels were high (p<0.05). Thyme essential oil significantly increased in liver catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities and serum CAT and GSH-Px activities, and significantly reduced both liver and serum lipid peroxidation (malondialdehyde=MDA) levels (p<0.01). In result, while thyme essential oil partially affected the performance and serum parameters, it had a marked effect on the antioxidant metabolism.

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“…These results showed that the solvent polarity is of great importance (Clara et al, 2010). In fact, since Water and Ethanol are a polar solvent, the polar components from AI be extracted.…”

Section: Results and Discussion Tocopherol Contents Of Sce Extractsmentioning

confidence: 88%

Biological screening of Ajuga iva extracts obtained by supercritical carbon dioxide and pressurized liquid extraction

et al. 2017

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Extracts obtained by supercritical carbon dioxide extraction (SCE) and pressurized liquid extraction (PLE) from the Ajuga iva aerial parts growth in three different geographical sites of Alegria were analysed. Tocopherols in SCE Extracts were quantified by HPLC, α-tocopherol dominated the profile in both A. iva of Bejaia (BEJ) and Bordj Bou Arreridj (BBA), while β-tocopherol was the lowest. PLE method produced higher extraction yields than SCE method, which ranged from 0.31 to 24.95% (w/w), the water gave the best yields extraction. Total phenolic content (TPC) ranged from 15.60 to 63.45mg GAE/g DWE; also the water gave higher total yield of phenolics, and the best TPC from DWP. The antioxidant activity was assessed by different assays, water and SCE extracts showed a slightly higher antioxidative effect than that obtained by Ethanol and Acetone. A slight opposite trend was obtained with the FRAP antioxidant activity; Acetone was the best extract after SCE extracts. Small differences in antioxidant activity values were found between the different sites of A. iva: BEJ, BBA, and ELO.

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Composition and antioxidant activity of Thymus vulgaris volatiles: Comparison between supercritical fluid extraction and hydrodistillation

Cited by 77 publications

References 35 publications

Supercritical Fluid Extraction of Plant Flavors and Fragrances

Supercritical Fluid Extraction of Plant Flavors and Fragrances

The Effect of Thyme Essential Oil (Thymus Vulgaris) Added to Quail Diets on Performance, Some Blood Parameters, and the Antioxidative Metabolism of the Serum and Liver Tissues

Biological screening of Ajuga iva extracts obtained by supercritical carbon dioxide and pressurized liquid extraction

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