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Essential oils analysis of the rhizomes of Alpinia conchigera Griff. and leaves of Alpinia malaccensis (Burm. f.) Roscoe from Bangladesh

2010; Academic Journals; Volume: 4; Issue: 6 Linguagem: Inglês

10.5897/ajps.9000102

1996-0824

Mohammad Nazrul Islam Bhuiyan, Jasim Uddin Chowdhury, Jaripa Begum, Nemai Ch, ra N,

Essential Oils and Antimicrobial Activity

The essential oils obtained by hydrodistillation of the rhizomes of Alpinia conchigera Griff. and leaves of Alpinia malaccensis (Burm. f.) Roscoe were analysed by gas chromatography mass spectrometry (GC-MS). 74 compounds were identified in A. conchigera rhizome oil among them, 40 had not been detected previously. The major chemical class was terpenoids, with eucalyptol (25.85%), chavicol (25.08%), b-pinene (6.71%) and caryophyllene (3.38%), as the major components. A. malaccensis leaves yielded 47 identified constituents: the majority were terpenoids, but the oil was clearly dominated by a-phellandrene (31.80%), eucalyptol (13.76%), O-cymene (11.45%), b-pinene (11.34%) and limonene (6.44%). The compositions of both oils varied qualitatively and quantitatively. Key words: Alpinia conchigera, Alpinia malaccensis, GC-MS analysis, essential oil composition, eucalyptol, a-phellandrene.