Composition and Variability of the Essential Oil in<i>Thymus zygis</i>from Southern Spain

Pérez-Sánchez, Rafael; Ubera, J.L.; Lafont, Fernando; Gálvez, Cándido

doi:10.1080/10412905.2008.9699989

Cited by 10 publications

(9 citation statements)

References 17 publications

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“…High percentage of α-terpinyl acetate in essential oil and headspace (21.9%) of Thymus spp., comparing to volatiles of T. aureopunctatus, confirms this plant is a unique species that requests further chemotaxonomic investigation. This oxygenated monoterpene is not an unusual constituent of the essential oils obtained from some other plants belonging to the genus Thymus [15][16][17].…”

mentioning

confidence: 88%

The Essential Oil of Thymus Aureopunctatus (Beck) K. Malý

Cavara

Maksimović

Vidić

2009

Natural Product Communications

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Essential oil of Thymus aureopunctatus (Beck) K. Malý, obtained by hydrodistillation and headspace technique, was subjected to capillary GC-MS analysis, and its volatile composition was compared with essential oil profile of Thymus serpyllum L. and a botanically undetermined thyme species, Thymus spp., all growing wild in the same habitat in Bosnia and Herzegovina. This paper presents the first report on phytochemical analysis of the rare T. aureopunctatus species, and also the first report on headspace analysis of plants belonging to the genus Thymus. One hundred and two volatile constituents were identified. The investigated Thymus species of Bosnian origin clearly belong to the thymol-chemotype with relatively abundant level of this main constituent varying from 30.5% for T. serpyllum, and 34.5% for T. aureopunctatus, to 44.2% for Thymus spp., while their corresponding headspace samples contain very high percentage of p-cymene, thymol biosynthesis precursor, in the range from 29.1% to 68.1%.

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mentioning

confidence: 88%

The Essential Oil of Thymus Aureopunctatus (Beck) K. Malý

Cavara

Maksimović

Vidić

2009

Natural Product Communications

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“…The constituents taken into account and most deeply analyzed were the compounds that characterized the chemotypes described previously by Pérez-Sánchez et al (14); see Table 1 for their names and percentages in essential oils here reported.…”

Section: Climatic Influencementioning

confidence: 99%

Bioclimatic influence on essential oil composition in South Iberian Peninsular populations ofThymus zygis

Pérez-Sánchez

Gálvez²,

Ubera

2012

Journal of Essential Oil Research

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The variation in yield and essential oil composition of some plants of Thymus zygis was studied through their life cycle. The relationship between the concentration of the essential oils' main compounds and the most frequently used bioclimatic indices was stated. Individual samples from seven populations growing wild in the South Iberian Peninsula were studied to assess the phenological variation of their oils. The samples showed a maximum yield at the flowering stage. The most representative compounds were selected, statistically analyzed and clustered in two groups, called thymol and c-terpinene according to their behavior through the cycle of the plants studied.

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“…Four chemotypes were identified on the basis of the phenolic content, i.e., thymol, carvacrol, thymol/carvacrol, and carvacrol/thymol chemotypes. Another investigation was carried out into the composition and variability of the essential oils contained in 63 individual plants taken from 21 populations of Thymus zygis L. in southern Spain . A chemometric investigation of the infraspecific variability of the essential oils of these populations led to the distinction of seven main chemotypes: thymol, carvacrol, linalool, α-terpinyl acetate, thymol/ p -eymene/γ-terpinene, 1,8-cineole/myrcene/spathulenol, and 1,8-cineole/α-terpineol.…”

Section: Introductionmentioning

confidence: 99%

Phenolic Profile and Hydrophilic Antioxidant Capacity as Chemotaxonomic Markers of Tomato Varieties

Vallverdú‐Queralt

Medina‐Remón

Martı́nez-Huélamo

et al. 2011

J. Agric. Food Chem.

103

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Tomatoes (Solanum lycopersicum L.), the second most important vegetable crop worldwide, are a key component in the so-called "Mediterranean diet", which is strongly associated with a reduced risk of chronic degenerative diseases. In this work, we evaluate the differences in the total and individual polyphenol content and hydrophilic antioxidant capacity of seven varieties of tomato cultivated in Vegas Bajas del Guadiana, Badajoz (Spain), which were collected from two consecutive harvests (2008-2009). Hydrophilic antioxidant capacity was evaluated using the TEAC assay, while the Folin-Ciocalteau assay with a previous cleanup was used to establish total polyphenol content. The method was optimized and validated. Individual polyphenols were quantified using liquid chromatography/electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS) on a triple quadrupole. All compounds were found to be significantly different when analysis of variance was performed. Results from the principal component analysis show that phenolic compounds and hydrophilic antioxidant capacity were responsible for the differences among tomato samples according to variety.

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Composition and Variability of the Essential Oil inThymus zygisfrom Southern Spain

Cited by 10 publications

References 17 publications

The Essential Oil of Thymus Aureopunctatus (Beck) K. Malý

The Essential Oil of Thymus Aureopunctatus (Beck) K. Malý

Bioclimatic influence on essential oil composition in South Iberian Peninsular populations ofThymus zygis

Phenolic Profile and Hydrophilic Antioxidant Capacity as Chemotaxonomic Markers of Tomato Varieties

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