Mentha x piperita

AMELUNXEN, F., WAHLIG, T., ARBEITER, H., liber den Nachweis des atherischen Ols in isolierten Driisenhaaren und Driisenschuppen von Mentha x piperita L., Z. Pflanzenphysiol., 1969,61, 68-72. 

VOIRIN, B., BAYET, C., Developmental variations in leaf flavonoid aglycones of Mentha x piperita, Phytochemistry, 1992, 31,2299-2304. 

McCASKILL, D., GERSHENZON, J., CROTEAU, R., Morphology and monoterpene biosynthetic capabilities of secretory cell clusters isolated from glandular trichomes of peppermint (Mentha x piperita L.), Planta, 1992,187, 445-454. 

McCASKILL, D., CROTEAU, R., Monoterpene and sesquiterpene biosynthesis in glandular trichomes of peppermint Mentha x piperita) rely exclusively on plastid-derived isopentenyl diphosphate, Planta, 1995,197,49-56. 

NIU, X., LIN, K., HASEGAWA, P.M., BRESSAN, R.A., WELLER, S.C., Transgenic peppermint (Mentha x piperita) plants obtained by cocultivation with Agrobacterium tumefaciens, Plant Cell Rep., 1998,17, 165-171. 

Voirin, B., Bayet, C., and Colson, M., Demonstration that flavone aglycones accumulate in the peltate glands of Mentha x piperita leaves.. Phytochemistry, 34, 85, 1993. 

House dust mites were of interest also for our research group. In particular, we have evaluated the activity of the essential oils of four plants, Lavandula angustifolia, L. stoechas, Mentha x piperita (Lamiaceae) and Eucalyptus globulus (Myrtaceae), against a mite of stored food, Tyrophagus longior (Acari Acaridae) [230,231]. We have analyzed by GC-MS all the essential oils and applied two different methods to test the activity of these compounds one by direct contact and the other by vapour diffusion. In the direct contact assays five different quantities of... 

Luzutka JR, Mierauskiene J, Slapsyte G, et al. Genotoxicity of dill (Anethum graveolus L.), peppermint (mentha x piperita L.) and pine (Pinus sylvestris L.) essential oils in human lymphocytes and Drosophila melanogaster. Food Chem Tox 2001 39 485. 

In other systems, a particular structure may be found as a mixture of diastereoisomers. Peppermint (Mentha x piperita Labiatae/Lamiaceae) typically produces (—)-menthol, with smaller amounts of the stereoisomers (+)-neomenthol, (+)-isomenthol, and (+)-neoisomenthol, covering four of the possible eight stereoisomers (Figure 5.16). Oils from various Mentha species also contain significant amounts of ketones, e.g. (—)-menthone, (+)-isomenthone, (—)-piperitone, or (+)-pulegone. The metabolic relationship of... 

Peppermint Mentha x piperita (Labiatae/Lamiaceae) fresh leaf... 

Gilligan, N.P. (2005) The palliation of nausea in hospice and palliative care patients with essential oils of Pimpinella anisum (aniseed), Foeniculum vulgare var. dulce (sweet fennel), Anthemis nobilis (Roman chamomile) and Mentha x piperita (peppermint). International journal of Aromatherapy 15(4), 1 63-167. 

Crock, J., Wildung, M. and Croteau, R. (1997) Isolation and bacterial expression of a sesquiterpene synthase cDNA clone from peppermint (Mentha x piperita, L.) that produces the aphid alarm pheromone (E)-beta-famesene. Proc. Natl. Acad. Sci. USA, 94, 12833-8. 

Rajaonarivony, J.I.M., Gershenzon, J. and Croteau, R. (1992) Characterization and mechanism of (4S)-limonene synthase, a monoterpene cyclase from the glandular trichomes of peppermint (Mentha x piperita). Arch. Biochem. Biophys., 296, 49-57. 

Mentha x piperita) oil), (-)-isopulegone (E16) (in oil of Mentha pulegium), (—)-piperitone (El7) (in Eucalyptus oil), and (+)-carvone (E18) (in ripe fruits of dill Anethum graveolens, Umbelliferae) and caraway (Carum carvi, Umbelliferae)). 

The combined genomics and chemical approaches to plant terpenoid research are not restricted to the few plant species for which more or less complete genome sequences are now available. The discovery of many of the genes and enzymes for the formation of terpenoids such as menthol and related monoter-penes in peppermint Mentha x piperita) (15), artemisinin in Artemisia annua (16), Taxol in the yew tree (Taxus) (17), or conifer diterpene resin acids in species of spmce (Picea ) and pine (Pinus) (18) have been possible on the foundation of highly specialized efforts of EST and full-length cDNA sequencing combined with characterization of recombinant enzymes and analysis of the terpenoid metabolome of the target plant species. 

Peppermint oil is produced by steam distillation of the flowering herb Mentha x piperita L. It is an almost colorless to pale greenish-yellow liquid with a characteristic peppermint odor. 

GPP synthase AnUrrhinum majus large su GPP synthase Mentha x piperita large su... 

Another favorite substance for medicine and cosmetics is menthol. It is obtained from a number of heibs, peppermint (Mentha x piperita L.) being the most common source (Fig. 2.13). The peppermint plant contains about 1-3 % essential oil, which can be obtained by a chemical separation method called steam distilla-tiom About half of the oil is menthol and its derivatives, terpenes, and flavonoids. Menthol has a pleasant odor and eooling effect, and these two properties are why... 

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