. 2022 May 12;27(10):3109. doi: 10.3390/molecules27103109

Table 4.

Identification of volatile compounds by GC-MS of the extracts of V. vinifera stem (before derivatization) (CYHA: cyclohexane, DCM: dichloromethane, EtO: ethyl acetate, M: methanol, H: H₂O.

No.	RI	Compound	Maceration						ASE						Ref.
				Fractional Extraction						Fractional Extraction					Ref.
			Aqueous	CYHA	DCM	EtOAc	MeOH	H₂O	Aqueous	CYHA	DCM	EtOAc	MeOH	H₂O
1	1019	Cyclododecane	X			X						X			[49]
2	1044	2,4-Dihydroxy-2,5-dimethyl-3(2H)-furan-3-one	X				X	X	X						[50]
3	1075	Decane, 3-methyl-		X											[51]
4	1088	2,3-Dimethyldecane								X					[52]
5	1100	Undecane		X						X					[53]
6	1119	Cyclohexanone, 3,3,5trimethyl-				X									[50]
7	1187	Benzene, 1,2,4,5-tetramethyl-			X										[54]
8	1205	Dodecane								X					[50]
9	1249	4H-Pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl-	X			X	X	X					X	X	[55]
10	1306	Tridecane		X						X					[56]
11	1312	Nonanoic acid		X											[56]
12	1404	1,1′-Bicyclohexyl								X					[57]
13	1470	Benzaldehyde, 4-hydroxy-	X		X	X									[58]
14	1533	Pentadecane		X											[59]
15	1599	2,5-di-tert-Butyl-1,4-benzoquinone			X										[60]
16	1617	2,4-Di-tert-butylphenol	X	X	X										[61]
17	2161	n-Hexadecanoic acid	X	X	X	X									[62]
18	2194	Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy- methyl ester	X			X									[63]
19	2717	Phthalic acid, di(2-propylpentyl) ester	X												[64]

X: detected.