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Kaempferia  is a genus of the Zingiberaceae family containing a rich resource of essential oils (EOs) with various important biological activities. In the present study, the chemical compositions and  in vitro  antimicrobial activity of the EO of  Kaempferia attapeuensis  Picheans. &amp; Koonterm were reported for the first time. By the Gas Chromatography-Mass Spectrometry (GC/MS) analysis, a number of 46 compounds were identified in  K. attapeuensis  rhizomes EO (accounted for 90.61 % of the total content), among which germacrone (25.80%), camphene (18.63%) and  α -pinene (10.57%) were the major components. In the  in vitro  antimicrobial assay,  K. attapeuensis  rhizomes EO exhibited promising activity against the growth of three Gram-positive bacteria strains ( Enterococcus faecalis ,  Staphylococcus aureus , and  Bacillus cereus ), three Gram-negative bacteria strains ( Escherichia coli ,  Pseudomonas aeruginosa , and  Salmonella enterica ) and the yeast strain ( Candida albicans ) with their MIC values all of 32 µg/mL. In general, the present investigation has provided the foundation for additional research on the chemical compositions and biological effects of  K. attapeuensis .

journal of biologically active products from nature

Kaempferia attapeuensis  Picheans. &amp; Koonterm Growing Wild in Vietnam: Chemical Composition of Fresh Rhizomes Essential Oil and Its  In vitro  Antimicrobial Activity