. 2022 Jun 2;9:913297. doi: 10.3389/fnut.2022.913297

Table 3.

Changes in the volatile oxidation products of OO at different heating temperatures.

Compounds		Concentration (internal standard area %)
		Unheated	100°C	120°C	150°C	180°C	200°C
OO	2-Butenal	3.16 ± 0.41^a	21.41 ± 1.12^b	34.95 ± 1.03^bc	46.46 ± 11.55^c	82.65 ± 2.43^d	101.78 ± 10.73^e
	Pentanal	ND	49.87 ± 8.55^a	72.97 ± 4.32^ab	91.2 ± 3.67^b	139.07 ± 7.35^c	224.31 ± 24.92^d
	2-Pentenal	ND	26.78 ± 3.03^a	36.08 ± 0.78^ab	43.70 ± 13.50^ab	44.01 ± 2.01^ab	53.2 ± 6.03^b
	Hexanal	46.64 ± 13.59^a	293.46 ± 82.19^b	309.36 ± 5.94^b	414.13 ± 95.49^bc	490.35 ± 28.21^c	591.25 ± 150.56^c
	2-Hexenal	512 ± 134.38^a	2405.24 ± 98.4^d	1627.4 ± 94.73^c	1339.98 ± 215.2^bc	934.18 ± 23.36^ab	515.93 ± 16.27^a
	Heptanal	5.14 ± 0.98^a	63.98 ± 4.57^ab	80.35 ± 30^ab	146.52 ± 53.01^bc	218.75 ± 72.57^cd	296.9 ± 29.49^d
	2-Heptenal	16.66 ± 2.82^a	228.13 ± 2.55^b	458.5 ± 36.7^c	630.39 ± 114.37^d	759.17 ± 9.41^e	873.28 ± 9.22^e
	2,4-Heptadienal, (E,Z)	ND	ND	77.91 ± 6.81^a	427.98 ± 31.26^b	422.81 ± 10.15^b	473.44 ± 32.01^b
	Octanal	6.26 ± 1.22^a	41.48 ± 1.19^ab	64.26 ± 0.1^b	86.87 ± 21.54^b	179.18 ± 18.6^c	337.89 ± 83.4^d
	2,4-Heptadienal, (E,E)	ND	32.00 ± 0.06^a	53.43 ± 8.12^a	252.2 ± 39.29^b	322.26 ± 40.47^c	625.06 ± 17.06^d
	2-Octenal	ND	24.29 ± 3.33^a	56.9 ± 1.24^a	210.75 ± 54.29^b	303.8 ± 40.33^c	435.7 ± 9.99^d
	Nonanal	ND	528.35 ± 31.4^a	796.25 ± 8.41^b	1292.11 ± 41.34^c	1501.72 ± 117.2^d	2129.91 ± 70.88^e
	2-Decenal	5.86 ± 1.30^a	45.00 ± 1.01^ab	80.24 ± 0.16^ab	388.74 ± 103.04^b	978.08 ± 246.14^c	2622.2 ± 143.91^d
	2,4-Decadienal, (E,Z)	ND	27.26 ± 0.59^a	42.93 ± 2.22^a	1091.58 ± 93.77^b	1127.93 ± 61.06^b	2642.72 ± 149.4^c
	2,4-Decadienal, (E,E)	ND	41.17 ± 1.52^a	74.6 ± 6.93^a	2072.75 ± 569.9^b	2227.81 ± 71.72^b	5800.48 ± 44.2^c
	2-Undecenal	ND	ND	22.98 ± 3.53^a	85.44 ± 18.85^a	290.97 ± 66.04^b	1384.86 ± 98.71^c

OO, olive oil. Data are mean value of triplicate with SD. Different lowercase denotes significant difference (p < 0.05) in the same row.