Analysis of Apple Flavours: The Use of Volatile Organic Compounds to Address Cultivar Differences and the Correlation between Consumer Appreciation and Aroma Profiling
Table 1
List of VOCs detected across all samples and codes used for the statistical analyses.
Code
VOC name
Chemical family
Retention index
C1
(+)-2-bornanone
Ketone
1141
C3
γ-Himachalene
Sesquiterpenoid
1509
C4
1-Butanol
Alcohol
902
C6
1-Butanol, 2-methyl-, acetate
Acetate ester
884
C9
2,4-Hexadiene, (E,Z)-
Alkene
1112
C10
2-Hexen-1-ol, acetate, (Z)-
Acetate ester
1019
C11
n-Hexanal
Aldehyde
854
C13
2-Methylbut-2-en-1-yl acetate
Acetate ester
926
C14
3-Carene
Terpene
1008
C16
4-Hexen-1-ol acetate
Acetate ester
1010
C17
Acetic acid
Carboxylic acid
802
C18
Acetic acid, butyl ester
Acetate ester
822
C19
Acetic acid, heptyl ester
Acetate ester
1115
C20
Acetic acid, hexyl ester
Acetate ester
1017
C22
Acetic acid, pentyl ester
Acetate ester
918
C25
Butanoic acid, 2-methyl-, 2-methylbutyl ester
Nonacetate ester
1106
C26
Butanoic acid, 2-methyl-, hexyl ester
Nonacetate ester
1239
C27
Butanoic acid, 2-methyl-, pentyl ester
Nonacetate ester
1141
C28
Butanoic acid, 2-methyl-, propyl ester
Nonacetate ester
949
C29
Butanoic acid, 2-methylbutyl ester
Nonacetate ester
1061
C30
Butanoic acid, 2-methylpropyl ester
Nonacetate ester
959
C31
Butanoic acid, butyl ester
Nonacetate ester
999
C32
Butanoic acid, hexyl ester
Nonacetate ester
1194
C33
Butanoic acid, propyl ester
Nonacetate ester
904
C34
Butyl 2-methylbutanoate
Nonacetate ester
1044
C36
Camphor
Ketone
1142
C43
Estragole
Benzenoid VOC
1197
C44
Ethyl acetate
Acetate ester
712
C47
Hexanoic acid, 2-methylbutyl ester
Nonacetate ester
1254
C48
Hexanoic acid, hexyl ester
Nonacetate ester
1388
C49
Hexanoic acid, pentyl ester
Nonacetate ester
1289
C50
Hexanoic acid, propyl ester
Nonacetate ester
1097
C51
Hexyl tiglate
Nonacetate ester
1331
C52
Isobutyl acetate
Acetate ester
781
C53
L-Fenchone
Ketone
1086
C56
n-Propyl acetate
Acetate ester
744
C58
Propanoic acid, 2-methyl-, hexyl ester
Nonacetate ester
1151
C59
Propanoic acid, butyl ester
Nonacetate ester
913
C60
Propanoic acid, hexyl ester
Nonacetate ester
1108
C61
Propanoic acid, pentyl ester
Nonacetate ester
1011
RI = retention index based on a combination of retention times compared to C8–C20 alkane standards and calculated Kovats indices checked against the NIST library. The compounds in italics were not previously identified in apples.
