A Comparison of the Volatile Components of Cold Pressed Hamlin and Valencia (Citrus sinensis (L.) Osbeck) Orange Oils Affected by Huanglongbing

Table 3

Hamlin early asymptomatic versus symptomatic compound concentration.

Compound	concentration (ppm)	concentration (ppm)	value	Difference
α-Pinene	5267	4903	0.037	6.9%
β-Myrcene	12794	13918	0.089	7.9%
Linalool	660	486	0.001	26.4%
Citronellal	506	601	0.0007	15.8%
Decanal	858	561	0.0005	34.6%
Citronellol	129	141	0.043	8.5%
Neral	492	341	<0.000	30.6%
Carvone	69.9	60.7	0.004	13.2%
2-Decenal		nd	nd	nd
Geranial	732	536	0.001	26.8%
Perillaldehyde	140	138	0.440	1.4%
2,4-Decadienal	nd	nd	nd	nd
Citronellyl acetate	43.5	58.8	<0.000	26.0%
α-Terpinyl acetate	52.8	65.7	0.0009	19.6%
Dodecanal	767	753	0.298	1.8%

= huanglongbing asymptomatic samples; = huanglongbing symptomatic samples; differences at α ≤ 0.01; = not detected.