Carvacrol thyme

Determination of the phenols is of special importance in the analysis of hop (carvacrol), thyme, ajOwan (thymol), aniseed, badiana, fennel (anethole), clove bud and stem (eugenol) and sassafras oils (safrole). 

Carvacrol, Cj Hj O, is a phenol isomeric with thymol, with which it is frequently found associated, especially in certain types of thyme and origanum oils. 

Carvacrol is a naturally occurring substance isolated from oregano, thyme, and marjoram. What is its TUPAC name ... 

Thyme Thymus vulgaris (Lamiaceae) Thymol, carvacrol... 

Thymus vulgaris L. She Xiang Cao (Thyme) (aerial part) Tymol, terpinen-4-ol, pinenes, camphene, myrcene, alpha-phellandrene, limonene, 1,8-cineol, p-cymene, linalool, linalyl acetate, bomyl acetate, alpha-terpinyl acetate, alpha-terpineol, borneol, citral, geraniol, carvacrol.50 510 Anthelmintic, antispasmodic, carminative, diaphoretic, sedative. Treat bronchitis, cancer, diarrhea, gastritis, rheumatism, skin ailments. 

Carvacrol (5-isopropyl-2-methylphenol) Found in essential oils of thyme, sage and oregano. Phenolic, spicy odour. 

Thyme oil contains thymol and carvacrol (phenols p. 59), which are also dermal irritants, but with linalool and other noncyclic alcohols the risks are significantly reduced. 

The GC analysis (Fig. 7.7) shows a commercial white thyme with a high percentage of the phenols thymol (55.8%) and carvacrol (2.07%). This contrasts with that of sweet thyme (Fig. 7.8) with no phenolic compounds present and alcohols terpineol-4 (13%), a-terpineol (12.37%) and bomeol (5.95%) making up a total of 31.34% for this particular sample. 

PROP Main constituents are thymol, carvacrol. Found in plants Thymus vulgaris L. and Thymus sygisL. (FCTXAV 12,807,74). SYN SPANISH THYME OIL SAFETY PROFILE MHdly toxic by ingestion. A severe skin irritant. When heated to decomposition it emits acrid smoke and irritating fumes. 

Aromatic versions of cyclohexane monoterpenes (benzenoid menthanes or cymenes) are also found in nature and are constituents of some plants frequently used as spices. The hydrocarbon p-cymene (E19) has been found to occur in the oils of cinnamon (Cinnamonum zeylanicum), cypress, eucalyptus, thyme, and turpentine, whereas m-cymene (E20) is a constituent of the oil of blackcurrant Rites nigrum, Saxifragaceae). The corresponding phenols, thymol (p-cymen-3-ol) (E21) and carvacrol... 

Additional remark Also the essential oil of wild thyme, T. serpyllum [284-023-3 84776-98-7], again a polymorphous species bearing several chemotypes, is of commercial interest. A carvacrol-rich oil type may contain for example carvacrol (20-40%), thymol (1-5%), p-cymene (10-20%), y-terpinene (5-15%), bomeol, bomyl acetate, 1,8-cineol, citral, geraniol, linalool and others [284[. 

Thyme is commonly used as a culinary herb and is characterised by its volatile oil (0.8-2.6%). Phenols are the main ingredients, thymol in Thymus vulgaris carvacrol... 

Most contain carvacrol and thymol in varying amounts. Dried oregano will contain 0.2 to 0.4% of a yellowish volatile oil with thymol and carvacrol in varying amounts. The phenolic content may be 50 to 65%. Carvacrol is found in the oil of oregano, thyme, marjoram, and summer savory. It is practically insoluble in water. It is used as a disinfectant and in organic synthesis. Therapeutically, it is used as an anti-infective and anthelmintic. 

Thymus sp. (thyme) is a common spice that has been extensively studied [116-123]. Thyme is one of the earliest medicinal plants in western herbal medicine. The essential oil isolated from this spice is active in the inhibition of Gram positive and Gram negative bacteria as well as yeast and fdamentous fungi. A major constituent of thyme oil is thymol (91), which has been implicated as the molecule responsible for the activity of this essential oil. Other materials isolated from thyme oil that possess biological activity include carvacrol (92), bomeol (93), p-cymene (37), a-pinene (13) and camphene (94). Thymol (91) was shown to be the most active, followed by carvacrol (92), borneol (93), / -cymene (37), a-pinene (13), and camphene (94) [121]. 

Carvacrol. 2-Methyl-5-(].methylethyt)phenot 2 -p-cymenol 2-hydroxy -p-cymene isopropyl-o-cresol isothymol. C10H14O mol wt 150.21. C 79.95%, H 9.40%, O 10.65%, Found in oil of origanum, thyme, marjoram, summer savory E. Guenther, The Essential Oils vol. 2 (Van... 

Oil of Thyme. Volatile oil distilled from flowering plant Thymus vulgaris L., Labiatae. Constit. 20-40% by vol of thymol and carvacrol cymene. pinene linalool homyl acetate. 

Carvacrol occurs with cymene in a number of essential oils. It can be prepared by heating camphor with iodine. Thymol occurs in the oil of thyme and the oil of mint. It has germicidal properties, but is less active and less poisonous than phenol. 

The sulfonation of p-cymene (l-methyl-4-isopropylbenzene) gives the 2-sulfonic acid. Is this the expected orientation Explain. Use this fact to synthesize carvacrol, 2-methyl-5-isopropylphenol, from p-cymene. Carvacrol is found in the essential oils from thyme, marjoram, and summer savory. It has a pleasant thymol-like odor. 

Thyme Thymus, Thymbra spp. thymol, carvacrol Plutella xylostella Pseudaletia unipuncta [17]... 

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