References

Akgul, A. and Bayrak, A. (1987) Constituents of essential oils from Origanum species growing wild in Turkey. Planta Med. 51, 114. Akgul, A. and Kivanc, M. (1988) Inhibitory effects of six Turkish thyme-like spices on some common food-borne bacteria. Die Nahrung 32, 201 203. Akgul, A. and Kivanc, M. (1988a) Inhibitory effects of selected Turkish spices and oregano components on some food-borne fungi. Intern. J. Food Microbiol. 6, 263 268. Akgul, A., Kivanc, M. and Sert, S. (1991) Effect of...

Info

A Essential oil yield < 0.5 Poor 0.5-2.0 intermediate 2.0 > rich. b 5 < + < 10 10 < + + < 30 30 < + + + in the essential oils. a Essential oil yield < 0.5 Poor 0.5-2.0 intermediate 2.0 > rich. b 5 < + < 10 10 < + + < 30 30 < + + + in the essential oils. In the section Campanulaticalyx Ietswaart, O. isthmicum Danin has been described by smell as carvacrol-rich (Danin and Kunne, 1996), whilst O. ramonense Danin was shown to contain terpinen-4-ol, a-terpineol and,...

Breeding Targets

Owing to the extremely large morphological and chemical variety encountered in Origanum sp. and taking into account the demand for homogenous raw material, wild collection accompanied with quality as well as species maintaining assurance systems (sustainability, GHP) and or field production of reliable genotypes are the future methods of choice for quality products. As to the latter, selection and breeding represent an important part of the quality assurance system. The mentioned large...

Avoid oregano during pregnancy

So called conditioned flavor aversions caused by foodstuffs are rather common with humans and with animals, if a gastrointestinal malaise is experienced after eating some novel food. Oregano is a herb which has been used in animal experiments to study food aversions (Launchbaugh and Provenza, 1994). However, pregnant women can develop aversions even without any nausea or ill-feeling. Oregano is one of the most common foodstuffs, which have the ability to cause aversions during pregnancy....

Fertilisation pest and insect control

Beside the soil preparation (ploughing), oregano cultivation demands fertilisation with ammonium phosphate during November to December, and efficient pest control (weeding out) (Sarlis, 1994). Fortunately, the savoury herbs are not especially subject to serious damage by disease or insect pests, particularly when grown on a small scale. This may be due in part at least to the repellent or inhibitory action of their aromatic oils. When they are grown on a commercial scale, however, certain...

Analgesic Antiinflammatory And Antispasmodic Activity

Carvacrol-rich (67 per cent) essential oil of Origanum onites, collected at the Izmir locality (Turkey), showed a marked analgesic activity as assessed by the tail-flick method in male albino mice. The analgesic activity of O. onites essential oil was dose-dependent. When applied at 0.33 ml kg, the activity of O. onites oil was comparable to that of morphine (applied at 1 mg kg), but at 0.03 ml kg more potent than the analgesic activity of fenoprofen (at 8 mg kg) (Aydin et al, 1996). The sample...

Essential oils of Turkish Origanum taxa

Twenty-five Origanum taxa growing in Turkey have been chemically studied by our group at TBAM. O. onites (Syn. O. smyrnaeum L.) is the most widely traded Origanum species in Turkey. It consists of over 80 per cent of all the oregano exports of Turkey. This species is mainly wildcrafted, but also cultivated in areas exceeding 6000 ha in Denizli, Izmir and Isparta provinces in Western Turkey. During our research into the essential oils of O. onites, carvacrol (67 82 per cent) was found as main...

Insecticidal Nematicidal And Molluscicidal Activity

Higher plants, especially medicinal and aromatic plants (MAP), are a potential source of new insecticides, and many research groups are trying to prove their activity against noxious pests. Some natural compounds, isolated from these MAP (such as rotenon, pyretrins, and azadirachtin) are already commercially available on the market. A range of active compounds, including terpenoids, flavonoids, tannins, essential oils or their components (like carvacrol), that are present in O. vulgare in...

Trichomes

Unicellular Hairs Leaves

The aerial parts of many plants are covered with trichomes, which may be glandular or nonglandular. The members of each category exhibit a broad spectrum of variability, as concerns their shape, size, anatomy, ultrastructure, function, origin, pattern of development, etc. More than a century ago, microscopists tried to investigate some of the above trichome characteristics (particularly the hair form) and used them as a criterion for plant classification (Weiss, 1867 de Bary, 1877). The...

Introduction

In the past, several classifications were made within the morphologically and chemically diverse Origanum (Lamiaceae family) genus. According to different taxonomists, this genus comprises a different number of sections, a wide range of species and subspecies or botanical varieties (Melegari et al., 1995 Kokkini, 1997). Respecting Ietswaart taxo-nomic revision (Tucker, 1986 Bernath, 1997) there exist as a whole 49 Origanum taxa within ten sections (Amaracus Bentham, Anatolicon Bentham,...

Insectpollinating And Antiparasitic Activity

Origanum taxa, especially those that are rich in essential oils, have been extensively studied for their insect-pollinating (Ricciurdelli d'Albore, 1983 Beker et al, 1989) or nectar yielding (Kucherov and Siraeva, 1981 Jovancevic etal., 1984 Jablonski, 1986) effects. Although scientifically poorly understood, the traditional knowledge on attracting effects Origanum spp. for pollinating insects, especially honeybee (Apis mellifera), has been practically exploited since 1877, when the idea of...

Biological activities of Turkish Oregano

Pharmacological activities of the essential oils of O.onites and O.minutiflorum were tested. Both the oils reduced the tonus of rat stomach fundus. They also reduced the carbachol-induced contractions on isolated rat ileum and inhibited the spontaneous activity of sheep ureter. They exhibited analgesic activity in hot-plate test on mice as well. Acute toxicity of the oils were determined on albino mice. Acute toxicity tests resulted in sedation and anaestesia followed by respiratory failure and...

Khort Bj Mp 3 2015

Abd-Elgawad, M.M. and Omer, E.A. (1995) Effect of essential oils of some medicinal plants on phytonematodes. Anzeiger f r Schadlingskunde, Pflanzenschutz, Umweltschutz 68(4), 82 84. Abdalla, A.E. and Roozen, J.P. (1999) Effect of plant extracts on the oxidative stability of sunflower oil and emulsion. Food Chem. 64(3), 323 329. Abdalla, A.E., Tirzite, D., Tirzitis, G. and Roozen, J.P. (1999) Antioxidant activity of 1,4-dihydropyridine derivatives in beta-carotene-methyl linoleate, sunflower oil...

Flavonoids

Flavonoids, although phenolic compounds are discussed separately. Compared with the essential oils, the flavonoids of Origanum have received significantly less attention. It is only in recent years, that antioxidant compounds have become highly appreciated, hence more light is expected to be thrown on flavonoids that are always present, together with other phenolic compounds, in herbal infusion and other plant preparations Vekiari et al, 1993 Moller et al, 1999 . For example, Kanazawa et al....