Table 1.

Tentative identification of major volatiles present in kumquat, limequat, and lime provided by the use of ultra-fast GC-FID technique

No.	Compound	Relative peak area mean ± SD/(%)
		Kumquat	Limequat	Lime
1	α-Terpinene	40.16 ± 0.39a,b	25.5 ± 2.4a	24.51 ± 0.28b
2	α-Phellandrene	41.4 ± 3.4b	33.2 ± 2.4c	24.67 ± 0.22b,c
3	2-Heptenal	n.d.	12.1 ± 2.2c	5.00 ± 0.42c
4	3-Heptanone	2.74 ± 0.42a	12.2 ± 2.1a	4.87 ± 0.41a
5	Limonene	0.355 ± 0.053b	3.40 ± 0.50	4.15 ± 0.48b
6	γ-Terpinene	0.475 ± 0.036b	2.87 ± 0.43	4.10 ± 0.48b
7	2-Heptanone	0.482 ± 0.033	1.71 ± 0.35	0.976 ± 0.087
8	Ethyl isovalerate	0.57 ± 0.14	1.71 ± 0.35	0.974 ± 0.086
9	δ-Decalactone	n.d.	0.319 ± 0.027	0.1331 ± 0.0064
10	Cymenene	0.222 ± 0.022	0.525 ± 0.070	0.459 ± 0.027
11	2.4-Hexadienal	0.0045 ± 0.0013	0.473 ± 0.017	0.275 ± 0.019
12	Hexadecane	0.0415 ± 0.0031	0.388 ± 0.011	0.1973 ± 0.0099
13	Isoamyl acetate	0.0052 ± 0.0011	0.381 ± 0.085	0.272 ± 0.020
14	α-Terpinolene	0.253 ± 0.019	0.358 ± 0.036	0.431 ± 0.030
15	β-Pinene	n.d.	0.370 ± 0.055	0.279 ± 0.024
16	β-Ionone	0.02052 ± 0.00053	0.283 ± 0.032	0.1423 ± 0.0045
17	Sabinene	0.072 ± 0.016	0.188 ± 0.028	0.1208 ± 0.0066
18	Decane	0.168 ± 0.010	0.104 ± 0.013	0.1212 ± 0.0088
19	β-Myrcene	n.d.	0.1152 ± 0.0082	0.212 ± 0.012
20	Carvone	0.02622 ± 0.00052	0.063 ± 0.010	0.0158 ± 0.0026

SD standard deviation, Mean ± SD of 3 measurements, Averages in rows marked with the same letters differ significantly (P < 0.05)