Relationships between Biochemical Criteria, Volatile Compounds, and Sensory Profiles of Ten Apricot Clones at Commercial and Consumption Ripening Stages

Table 5

Concentration (in μg/kg of fresh weight) of volatile compounds identified in ten apricot clones at the consumption ripe stage (M2).

Volatile compounds	RI	“Mans 15”	“Cg 2”	“Ab 5”	“Agdez C2”	“Marouch 4”	“Rtil 4”	“Clone C”	“Marouch 16”	“Agdez LG1”	“Boum A2”
Aldehydes (9)
Acetaldehyde	831	99.8 ± 16.5^b	208.4 ± 28.2^a	98.2 ± 12.1^b	141.3 ± 38.2^b	133.4 ± 20.1^b	229.0 ± 32.4^a	180.0 ± 30.2^ab	154.4 ± 31.2^b	122.0 ± 17.5^b	31.6 ± 7.4^c
Hexanal	1102	124.3 ± 23.5^d	201.5 ± 33.3^c	696.3 ± 77.8^a	203.0 ± 37.5^c	490.8 ± 44.3^b	190.1 ± 39.2^d	158.8 ± 29.9^d	15.4 ± 3.5^e	93.7 ± 11.1^de	110.2 ± 20.4^d
Pentanal	1153	522.5 ± 70.1^a	78.5 ± 26.4^c	164.0 ± 40.3^b	117.4 ± 25.5^b	12.0 ± 3.5^d	107.6 ± 24.6^b	76.8 ± 11.5^c	61.4 ± 21.5^c	33.8 ± 10.6^d	69.1 ± 18.5^c
2-Hexenal	1249	102.2 ± 34.5^b	135.9 ± 31.7^b	404.7 ± 61.5^a	46.3 ± 18.0^c	422.0 ± 82.3^a	78.7 ± 22.6^c	43.8 ± 14.9^c	9.0 ± 4.5^c	51.1 ± 18.7^c	23.0 ± 8.5^c
Butanal-2-methyl	1257	19.6 ± 8.6^a	n.d	2.5 ± 0.7^a	n.d	24.3 ± 8.3a	16.3 ± 6.8^a	14.8 ± 5.1^a	n.d	20.4 ± 4.6^a	22.7 ± 7.9^a
Butanal-3-methyl	1267	6.7 ± 1.4^b	107.9 ± 26.7^a	n.d	n.d	6.8 ± 2.2^b	8.9 ± 1.6^b	n.d	18.9 ± 5.5^b	3.1 ± 0.6^b	7.5 ± 0.8^b
Benzaldehyde-4-methyl	1288	14.7 ± 3.5^a	47.8 ± 15.6^a	34.4 ± 11.8^a	33.3 ± 11.4^a	30.5 ± 9.9^a	20.4 ± 4.4^a	10.9 ± 2.6^a	18.2 ± 6.1^a	2.0 ± 0.2^a	9.0 ± 1.7^a
Benzaldehyde	1536	55.9 ± 21.5^b	189.0 ± 38.1^a	27.8 ± 3.7^b	82.6 ± 18.9^b	70.7 ± 11.5^b	49.8 ± 12.5^b	27.5 ± 10.6^b	54.3 ± 16.9^b	n.d	n.d
β-Cyclocitral	1651	n.d	20.6 ± 3.7^a	27.7 ± 11.5^a	16.4 ± 3.9^a	58.8 ± 23.7^a	21.7 ± 5.7^a	17.5 ± 4.7^a	n.d	32.2 ± 7.9^a	21.4 ± 8.2^a
Ketones (4)
2-Propanone	866	18.7 ± 8.5^c	367.7 ± 87.9^a	5.5 ± 1.4^c	124.2 ± 40.1^b	32.2 ± 7.5^c	5.6 ± 2.3^c	29.2 ± 11.1^c	5.6 ± 2.0^c	119.4 ± 44.4^b	74.8 ± 13.8^c
β-Ionone	1973	n.d	70.6 ± 27.7^a	27.7 ± 11.1^a	16.4 ± 3.5^a	58.8 ± 14.8^a	21.7 ± 7.9^a	17.5 ± 5.9^a	n.d	32.2 ± 10.0^a	21.4 ± 5.7^a
6-Methyl-5-hepten-2-one	1982	14.8 ± 3.8^a	n.d	4.1 ± 1.3^a	1.5 ± 0.4^a	11.9 ± 5.0^a	77.7 ± 20.1^a	9.2 ± 2.9^a	n.d	n.d	n.d
3-Hydroxybutanone	1998	174.6 ± 38.7^b	12.0 ± 2.7^c	411.3 ± 99.1^a	12.5 ± 5.8^c	4.0 ± 1.3^c	10.8 ± 3.7^c	16.8 ± 4.7^c	195.4 ± 22.6^b	3.7 ± 1.6^c	1.6 ± 0.9^c
ɣ-Decalactone	n.d	n.d	n.d	n.d	n.d	n.d	n.d	n.d	n.d	n.d	n.d
Alcohols (7)
Ethanol	955	429.7 ± 79.9^a	165.2 ± 66.5^c	242.0 ± 50.8^b	196.1 ± 39.6^bc	n.d	253.9 ± 57.9^b	283.1 ± 54.1^b	402.6 ± 92.7^a	41.6 ± 15.0^d	183.7 ± 58.9^c
1-Butanol	1115	58.4 ± 19.4^b	26.1 ± 5.6^b	12.8 ± 1.6^b	31.9 ± 11.0^b	24.3 ± 8.4^b	69.8 ± 14.6^b	114.0 ± 26.8^a	27.5 ± 8.5^b	6.5 ± 2.8^b	13.2 ± 3.9^b
1-Penten-3-ol	1156	n.d	n.d	9.9 ± 3.7^a	n.d	n.d	n.d	n.d	n.d	n.d	n.d
1-Hexanol	1207	81.1 ± 22.2^a	61.5 ± 11.5^a	86.0 ± 20.0^a	n.d	9.2 ± 2.6^b	n.d	19.5 ± 3.1^b	68.7 ± 12.5^a	n.d	n.d
2-Hexen-1-ol	1367	40.0 ± 12.1^b	17.7 ± 2.8^b	63.9 ± 15.8^a	17.4 ± 12.5^b	23.2 ± 3.9^b	4.1 ± 0.7^b	8.7 ± 2.8^b	22.6 ± 4.6^b	4.8 ± 1.9^b	n.d
β-Linalool	1432	8.5 ± 1.7^d	283.5 ± 80.2^b	78.2 ± 21.9^d	25.7 ± 7.1^d	728.4 ± 169.2^a	221.1 ± 41.9^b	15.8 ± 3.7^d	49.9 ± 13.9^d	236.6 ± 42.0^b	112.0 ± 30.0^c
1-Butanol-2-methyl	1444	146.4 ± 49.2^a	n.d	n.d	n.d	n.d	n.d	52.0 ± 13.7^b	n.d	n.d	n.d
Acetates (4)
Methyl acetate	912	115.9 ± 27.2^a	35.5 ± 7.4^b	38.9 ± 6.9^b	53.7 ± 12.0^b	35.2 ± 8.2^b	49.7 ± 14.9^b	46.1 ± 9.7^b	101.2 ± 29.2^a	21.7 ± 4.9^b	10.8 ± 2.6^b
Butylacetate	1165	145.7 ± 41.2^a	n.d	n.d	64.9 ± 8.2^b	n.d	49.0 ± 8.2^b	69.3 ± 17.8^b	n.d	n.d	19.1 ± 2.7^b
3-Hexen-1-ol acetate	1287	156.8 ± 30.2^a	6.3 ± 2.4^b	46.7 ± 12.7^b	9.5 ± 2.3^b	3.3 ± 0.7^b	5.3 ± 2.2^b	n.d	4.2 ± 1.1^b	3.8 ± 0.7^b	n.d
2-Hexen-1-ol acetate	1331	71.3 ± 21.9^a	48.3 ± 11.0^b	38.6 ± 11.1^b	11.5 ± 3.3^c	4.1 ± 0.7^c	n.d	n.d	6.4 ± 2.6^c	n.d	n.d
Acids (1)
Acetic acid	1478	56.5 ± 11.6^b	63.8 ± 12.8^b	121.8 ± 18.5^a	64.6 ± 10.5^b	54.2 ± 8.2^b	49.4 ± 15.0^b	47.4 ± 10.2^b	53.4 ± 18.1^b	20.6 ± 5.2^b	37.0 ± 8.9^b

Values are means ± standard deviation (SD) of two replicates of 10 fruits for each maturity stage (M1 and M2) per clone. n.d: not detected. Means with same letters within the same line do not differ significantly according to Fisher’s LSD test at .