... β-bisabolen (6 ,97 %), β-sesquiphellandren (5 ,12 %), α-pinen (5 ,46 %) and other components that have been identified or not. Also, the constituents of n-hexane extracted from Alpinia.sp rhizomes have been ... 7,0 7(2 H,d,H-4,H- 8) 7,0 7(2 H,d,H-4,H- 8) 5 và 7 7,373(d) 7,3 8(2 H,d,H-5,H- 7) 7,3 7(2 H,d,H-5,H- 7) 9 6,269(d) 6,2 8(1 H,d,H- 9) 6,2 7(1 H,d,H- 9) 12 5,948(ddd) 6,0 1(1 H, ddd,H-1 2) 5,9 8(1 H, ddd,H-1 2) 13 5,258(d) 5,2 4(1 H,d,H-1 3) ... determined by spectroscopic methods: MS, 13C-NMR and 1H-NMR. Moreover, in the extracts there are some other components that also have relatively high levels such as: α-zingiberen (5 .63 %), β sesquiphellandren(4.07 %), ...