Effects of Pretreatment and Drying on the Volatile Compounds of Sliced Solar-Dried Ginger (Zingiber officinale Roscoe) Rhizome

Table 2

Major volatile compounds detected in pretreated sliced solar dried yellow ginger rhizome.

Retention time (min)	Compound name	Fraction (%)
		Potassium metabisulfite concentration					Blanching temperature
		0.0%	0.10%	0.15%	0.20%	1%	50°C	100°C
8.69	α-Pinene						4.860	0.003
8.98	Camphene	2.9685	1.32	0.005	0.007
10.82	α-Phellandrene	4.3375
10.85	α -(E)-Sabinene hydrate		2.96	0.011			3.034	0.006
15.16	Neral		1.70			0.002		0.002
15.18	Z,Z,Z-4,6,9-Nonadecatriene			0.005	0.007
15.19	2,6-Octadienal, 3,7-dimethyl (Z)						0.001
15.55	Borneol					0.001
15.73	Geranial	2.5272	2.61	11.718	0.017	3.122	0.003	0.003
15.74	Dill-apiole			0.005
21.29	α-Farnesene	0.0055
21.99	α-Curcumene	5.9425	4.89		0.008	4.888	0.006	6.433
22.18	Germacrene D	2.5849	2.86	0.081	0.115		2.964
22.22	α-Cubebene			31.813	44.703	3.462		0.003
22.61	α-Zingiberene			19.377	0.028
22.62	Dihydro-α-curcumene	39.719	41.40			41.017	43.035	44.523
22.87	α-Farnesene	15.536	16.20			17.073	16.459	17.137
23.03	α-bisabolene	9.2911	9.69			10.194	10.130	10.963
23.07	(6R,7 R)-bisabolene			36.948	55.046
23.20	Epibicyclosesquiphellandrene					0.002
23.52	α-Cedrene	17.073	19.14			20.231	19.490	20.911
24.75	γ-Gurjunene				0.012
26.17	Zingerone				0.004