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

Table 4

Concentration (in μg/kg of fresh weight) of volatile compounds identified in ten apricot clones at the commercial ripe stage (M1).

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	143.2 ± 24.3^a	150.5 ± 46.8^a	119.5 ± 26.0^a	22.6 ± 5.3^b	145.2 ± 30.3^a	184.3 ± 43.1^a	187.4 ± 35.2^a	105.2 ± 19^a	91.4 ± 17.3^ab	57.7 ± 11.8^b
Hexanal	1102	398.2 ± 66.5^b	147.7 ± 27.3^d	417.7 ± 51.3^a	n.d	182.3 ± 22.6^d	90.2 ± 11.9^e	282.7 ± 30.1^c	87.2 ± 10.5^e	125.3 ± 11.3^d	83.5 ± 11.6^e
Pentanal	1153	97.0 ± 20.4^ab	69.8 ± 14.5^b	32.5 ± 7.6^b	110.4 ± 23.6^a	111.8 ± 19.3^a	98.7 ± 24.6^ab	131.7 ± 34.6^a	46.9 ± 12.5^b	137.6 ± 34.6^a	25.5 ± 9.5^b
2-Hexenal	1249	321.3 ± 45.6^a	106.5 ± 20.5^b	345.6 ± 50.1^a	92.6 ± 34.7^bc	64.6 ± 17.8^c	56.0 ± 18.9^c	71.2 ± 27.6^c	31.7 ± 12.1^c	12.7 ± 6.5^c	49.8 ± 15.5^c
Butanal-2-methyl	1257	15.1 ± 7.8^b	n.d	30.2 ± 10.1^b	n.d	24.6 ± 7.6^b	89.8 ± 22.7^a	7.4 ± 2.8^b	28.8 ± 15.6^b	17.0 ± 4.6^b	16.2 ± 7.0^b
Butanal-3-methyl	1267	30.9 ± 12.2^b	82.0 ± 20.5^a	17.1 ± 7.6^b	n.d	14.1 ± 5.5^b	n.d	n.d	13.4 ± 3.9^b	4.8 ± 1.1^b	18.7 ± 7.7^b
Benzaldehyde-4-methyl	1288	13.8 ± 4.5^b	36.2 ± 10.5^a	66.8 ± 18.8^a	17.3 ± 3.6^b	65.7 ± 17.7^a	8.4 ± 2.5^b	13.5 ± 3.7^b	6.8 ± 1.7^b	4.1 ± 0.8^b	n.d
Benzaldehyde	1536	40.5 ± 10.6^b	136.9 ± 30.2^a	139.9 ± 23.6^a	43.0 ± 11.7^b	90.0 ± 23.0^ab	40.0 ± 11.7^b	33.6 ± 15.5^b	13.5 ± 3.8^b	n.d	n.d
β-Cyclocitral	1651	23.9 ± 7.7^ab	32.5 ± 8.0^a	76.7 ± 23.8^a	11.3 ± 1.7^b	38.6 ± 11.0^a	13.2 ± 3.9^b	22.5 ± 7.8^ab	21.2 ± 3.7^ab	16.5 ± 4.3^b	27.6 ± 7.7^ab
Ketones (4)
2-Propanone	866	18.0 ± 7.8^d	217.9 ± 43.8^a	13.5 ± 3.2^d	13.3 ± 3.6^d	2.2 ± 0.7^d	14.4 ± 6.5^d	104.5 ± 25.5^b	5.03 ± 1.1^d	251.9 ± 77.9^a	60.2 ± 22.2^c
β-Ionone	1973	23.9 ± 7.2^b	32.5 ± 8.9^b	76.7 ± 22.6^a	14.3 ± 6.4^b	38.6 ± 12.3^b	13.2 ± 5.4^b	22.5 ± 6.7^b	21.2 ± 7.1^b	16.5 ± 4.7^b	27.6 ± 10.5^b
6-Methyl-5-hepten-2-one	1982	2.9 ± 0.6^a	n.d	5.9 ± 2.7^a	n.d	11.8 ± 5.5^a	2.4 ± 0.8^a	2.3 ± 0.7^a	4.4 ± 0.7^a	n.d	1.1 ± 0.1^a
3-Hydroxybutanone	1998	75.8 ± 20.0^b	6.9 ± 1.7^c	7.2 ± 2.4^c	74.7 ± 11.7^b	7.8 ± 1.9^c	177.4 ± 65.8^a	7.9 ± 3.0^c	8.3 ± 2.7^c	3.3 ± 1.6^c	2.1 ± 0.5^c
ɣ-Decalactone	2134	12 ± 27.0^a	168.0 ± 31.1^a	111.0 ± 39.2^a	105.0 ± 26.7^a	102.0 ± 32.9^a	138.0 ± 40.0^a	87.0 ± 22.1^b	153.0 ± 61.0^a	123.0 ± 44.0^a	n.d
Alcohols (7)
Ethanol	955	323.8 ± 44.7^a	93.7 ± 12.0^bc	33.1 ± 8.7^c	80.2 ± 28.7^bc	n.d	150.9 ± 38.2^b	161.2 ± 33.2^b	70.1 ± 18.9^c	43.3 ± 17.1^c	71.6 ± 27.9^c
1-Butanol	1115	30.4 ± 12.6^a	12.1 ± 1.4^a	25.2 ± 9.1^a	58.1 ± 17.2^a	28.7 ± 13.2^a	16.8 ± 4.6^a	22.2 ± 7.7^a	34.0 ± 11.0^a	21.1 ± 7.1^a	3.1 ± 1.8^a
1-Penten-3-ol	1156	13.6 ± 3.5^a	n.d	n.d	n.d	6.7 ± 2.7^a	4.3 ± 1.2^a	n.d	n.d	n.d	n.d
1-Hexanol	1207	48.5 ± 14.5^a	41.0 ± 10.1^a	10.2 ± 1.2^a	33.2 ± 6.9^a	3.8 ± 0.8^a	47.2 ± 11.5^a	4.8 ± 0.7^a	6.2 ± 1.6^a	n.d	3.3 ± 1.7^a
2-Hexen-1-ol	1367	56.2 ± 21.0^a	21.7 ± 8.9^a	16.4 ± 4.9^a	58.7 ± 16.8^a	7.5 ± 2.6^a	21.5 ± 5.4^a	17.2 ± 2.5^a	5.6 ± 2.1^a	n.d	6.2 ± 3.1^a
β-Linalool	1432	63.5 ± 17.9^e	217.0 ± 90.1^c	880.5 ± 153.7^a	60.0 ± 17.9^e	351.3 ± 61.1^b	100.1 ± 20.0^d	31.2 ± 6.2^e	9.2 ± 2.1^e	40.1 ± 11.7e	95.2 ± 24.9^d
1-Butanol-2-methyl	1444	31.4 ± 5.7^a	n.d	n.d	38.6 ± 8.8^a	n.d	n.d	n.d	n.d	n.d	n.d
Acetates (4)
Methyl acetate	912	68.9 ± 12.5^a	80.7 ± 21.2^a	46.0 ± 8.3^b	46.0 ± 11.8^b	46.3 ± 13.8^b	74.5 ± 15.8^a	28.5 ± 8.5^b	30.8 ± 6.0^b	n.d	12.9 ± 4.2^b
Butylacetate	1165	16.1 ± 7.9^b	n.d	n.d	63.7 ± 17.7^a	n.d	n.d	n.d	22.8 ± 7.9^b	30.5 ± 12.1^b	n.d
3-Hexen-1-ol acetate	1287	56.9 ± 17.0^a	9.1 ± 1.9^b	7.1 ± 2.1^b	29.5 ± 5.7^b	4.0 ± 1.7^b	3.1 ± 1.2^b	4.5 ± 2.1^b	n.d	n.d	2.8 ± 0.2^b
2-Hexen-1-ol acetate	1331	66.3 ± 12.4^a	33.7 ± 6.9^b	n.d	33.3 ± 12.1^b	n.d	7.6 ± 3.3^b	n.d	n.d	n.d	n.d
Acids (1)
Acetic acid	1478	54.4 ± 12.5^b	57.5 ± 15.9^b	63.9 ± 15.0^b	112.2 ± 37.8^a	68.9 ± 15.8^b	29.9 ± 12.1^b	65.7 ± 15.7^b	28.5 ± 7.9^b	53.3 ± 15.2^b	16.3 ± 3.5^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 .