Table 3. Comparison of terpenoids using subcritical water extraction (optimum condition) and solvent extractions (temperature/time of 60°C/30 min)

Compound (mg/g)	Extraction methods
	Subcritical water extraction (optimum condition)	Extraction solvents
		Water	30% ethanol	30% acetone
Camphor	2.73±0.39c (130°C, 5 min)	0.31±0.01a	1.88±0.35b	1.95±0.15b
Borneol	0.72±0.07c (130°C, 5 min)	0.07±0.03a	0.35±0.20b	0.34±0.02b
Eucalyptol	0.51±0.03b (150°C, 5 min)	ND	0.34±0.04a	0.35±0.04a

Duncan's test at a significance level of p<0.05, means in the same row with matching superscript letters are not differ significantly (n=3).
ND, means not detected.