Seq. Identified components retention time (minute) % peak area* (methanol) % peak area* (hexane)
1 gingerol 1.38 25 23
2 zingiberene 2.68 9 6
3 β-bisabolene 3.61 4 5
4 α-farnesene 4.29 11 7
5 shogaol 5.28 18 25
6 β-sesquiphellandrene 6.62 9 13
7 α-curcumene 7.19 14 0
*Peak area was calculated from area of (sample/total area)×100
Table 1: Relative composition profile, in % peak area, of Zingiber officinale extracts.