. 2011 Feb 10;12(2):1101–1114. doi: 10.3390/ijms12021101

Table 6.

Total antioxidant (FRAP) activity in different part of two varieties of Z. officinale.

Varieties	Extraction source	CO₂ Concentration (μmol mol⁻¹)
Varieties	Extraction source	400	800
Halia Bentong	Leaves	577.21 ± 14.21^e	722.31 ± 11.45^d
	Stems	341.2 ± 40.76^f	356.31 ± 41.6^f
	Rhizomes	671.3 ± 21.2^d	774.62 ± 26.35^bc

Halia Bara	Leaves	620.1 ± 18.7^e	783.09 ± 21.95^b
	Stems	350.2 ± 27.6^f	367.4 ± 20.43^f
	Rhizomes	740.6 ± 40.15^cd	831.16 ± 39.08^a

Expressed in units of μmol Fe (II)/g. All analyses are the mean of triplicate measurements ± standard deviation. Means not sharing a common letter were significantly different at P ≤ 0.05.