. 2020 Sep 23;25(19):4363. doi: 10.3390/molecules25194363

Table 2.

Miscellaneous volatile compounds from kohlrabi tissue.

Compound Name	RRI_exp	RRI_lit	H₂O	Fe²⁺	Ag⁺	Fe³⁺	CaCl₂ sat. ¹	Cu²⁺	Na₂SO₄ anh. ²
sinigrin potassium salt
(methyldisulfanyl)methane	1068	1064 [15]	317715 ^#,b	69214 ^#,c	-	5106 ^$,c	-	2482 ^$,c	419816 ^$,a
hexanal	1075	1082 [18]	47284 ^$,b	169473 ^#,b	-	3789656 ^#,a	42992 *^,b	233815 ^@,b	61231 ^#,b
pent-1-en-3-ol	1141	1158 [18]	5905 ^$,c	119966 *^,c	-	-	70899 ^$,b	-	187903 ^#,a
(E)-hex-2-enal	1218	1216 [18]	-	-	-	-	13660 ^@,b	-	36592 ^#,a
2-pentylfuran	1222	1232 [18]	-	26154 *^,b	-	138788 ^#,a	-	2988 ^#,c	2493 ^$,c
heptan-2-one	1325	1182 [18]	-	-	-	242172 *^,a	-	-	-
(Z)-hex-3-en-1-ol	1364	1380 [18]	-	10077 ^@,b	-	-	102469 *^,c	-	58909 ^#,a
(methyltrisulfanyl)methane	1391	1376 [18]	2974175 ^#,a	-	-	-	-	-	83767 ^$,b
benzaldehyde	1530	1518 [18]	46994 ^$,a	1311 ^#,c	-	25629 *^,b	16560 ^#,b	2234^#,c	-
(E)-non-2-enal	1539	1535 [18]	20479 *^,b	-	-	147120 ^#,a	-	-	-
glucotropaeolin potassium salt
(methyldisulfanyl)methane	1068	1064 [15]	615854 *^,a	93952 ^#,c	-	-	3438 *^,c	3848 ^$,c	342112 *^,b
hexanal	1075	1082 [18]	71835 ^#,b	140440 ^$,b	-	3789656 ^#,a	27612 ^#,b	202812 *^,b	57077 ^#,b
pent-1-en-3-ol	1141	1158 [18]	9007 *^,b	100647 *^,b	-	-	190000 ^$,a	2830 ^#,b,	159107 ^$,a
(E)-hex-2-enal	1218	1216 [18]	-	-	-	-	69644 ^#,a	-	39481 ^$,a
2-pentylfuran	1222	1232 [18]	-	10856 *^,b	-	138788 ^#,a	-	-	-
heptan-2-one	1325	1182 [18]	-	-	-	242172 *^,a	-	-	-
(Z)-hex-3-en-1-ol	1364	1380 [18]	-	3675 ^$,b	-	-	142612 ^#,a	-	45657 ^$,b
(methyltrisulfanyl)methane	1391	1376 [18]	3243687 ^#,a	-	-	-	-	-	88756 ^$,b
benzaldehyde	1530	1518 [18]	43684 ^#,a	3781 *^,c	-	25629 *^,b	23531 ^#,b	18571 *^,bc	-
(E)-non-2-enal	1539	1535 [18]	29224 *^,b	-	-	147120 ^#,a	-	-	-

¹: saturated solution of calcium chloride; ²: anhydrous sodium sulfate; RRI_exp: relative retention index calculated by n-alkane series using the experimental value (Supelcowax-10 column); RRI_lit: relative retention index calculated by n-alkane series using the literature value; relative standard deviation: *: RSD ≤ 10%, ^#: 10% < RSD ≤ 25%, ^$: 25% < RSD ≤ 50%, ^@: RSD > 50%; values express the mean peak area; ^{a, b, bc, c}: the result of statistical analysis (one-way ANOVA Duncan test as post-hoc), values followed by the same letter in a Duncan grouping are not significantly different (α = 0.05); (n = 3).