@article {vonPoser:1996p1179, title = {Aromatic plants from Brazil .4. Essential oil composition and allelopathic effect of the Brazilian lamiaceae Hesperozygis ringens (Benth) Epling and Hesperozygis rhododon Epling}, journal = {J Agr Food Chem}, volume = {44}, number = {7}, year = {1996}, month = {Jan}, pages = {1829{\textendash}1832}, abstract = {Samples of Hesperozygis ringens (Benth.) Epling and Hesperozygis rhododon Epling essential oils were analyzed by a combination of analytical techniques: capillary gas chromatography, liquid/solid chromatography, GC/MS coupling, and NMR spectroscopy. Twenty-four components have been identified representing altogether more than 95\% of the oil content. The oil of H. ringens is constituted mainly by pulegone (79.2\%) accompanied by several oxygenated derivatives (pulegone oxides, 1.2\%; 8-hydroxy-p-menth-3-one, 1.3\%; and 8-hydroxy-p-menth-4-en-3-one, 3.7\%); that of H. rhododon contains menthone and pulegone as main compounds in almost comparable amounts (43.4\% and 29.6\%, respectively). Tests carried out on lettuce seeds using alcoholic extracts of the two species showed significant antigerminating properties mainly for H. ringens. The same activity was observed with its essential oil.}, keywords = {Essential Oil Composition, Hesperozygis Rhododon Epling, Hesperozygis Ringens (Benth) Epling, Lamiaceae, Menthone, Pulegone}, url = {http://apps.isiknowledge.com/InboundService.do?product=WOS\&action=retrieve\&SrcApp=Papers\&UT=A1996UY27400042\&SID=2AFL5dnj5MCc8JPedL5\&SrcAuth=mekentosj\&mode=FullRecord\&customersID=mekentosj\&DestFail=http\%253A\%252F\%252Faccess.isiproducts.com\%252Fcustom_image}, author = {GL vonPoser and C Menut and ME Toffoli and P Verin and M Sobral and JM Bessiere and G Lamaty and AT Henriques} }