Essential oil yield and composition of ginger (Zingiber officinale Roscoe) rhizomes after different drying periods

• Autor(a) principal: Dabague,I.C.M
• Data de Publicação: 2011
• Outros Autores: Deschamps,C, Mógor,A.F, Scheer,A.P, Côcco,L
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista brasileira de plantas medicinais (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-05722011000100012
• topic: geranial; neral; geraniol; geranyl acetate

Ginger production in Paraná State, Brazil, has predominated in Morretes Municipality, with around 300 ha cultivated area. The aim of this work was to evaluate the essential oil yield and composition of ginger rhizomes produced in Morretes and subjected to different drying periods at room temperature. Experimental design was completely randomized, in a 5x5 factorial arrangement, with four replicates (four plants each), five origins and five drying periods at room temperature (0, 15, 30, 45 and 60 days). The essential oil was extracted by hydrodistillation in a Clevenger-type device for 3h and the constituents were analyzed by gas chromatography-mass spectrometry (GC/MS). The drying of ginger rhizomes at room temperature for up to 60 days decreased the essential oil yield in most origins. Geranial and neral levels were higher in all origins and as drying periods were longer. Geraniol and geranyl acetate levels decreased after drying in all origins, as well as eucalyptol, camphene, zingiberene and β-bisabolene in most origins.