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

Table 8

Hamlin symptomatic early versus late compound concentration.

Compound	Early concentration (ppm)	Late concentration (ppm)	value	Difference
α-Pinene	4903	4655	0.039	5.1%
β-Myrcene	13911	13607	0.602	2.2%
Linalool	486	242	<0.00	50.2%
Citronellal	601	725		17.1%
Decanal	561	716		21.6%
Citronellol	141	123	0.00	12.8%
Neral	341	231	<0.00	37.5%
Carvone	60.7	33.5	<0.00	44.8%
2-Decenal		nd	nd	nd
Geranial	536	386	<0.00	28.0%
Perillaldehyde	138	115	0.00	16.7%
2,4-Decadienal	nd	nd	nd	nd
Citronellyl acetate	58.8	57.5	0.132	2.2%
α-Terpinyl acetate	65.7	62.7	0.035	4.6%
Dodecanal	753	795	0.013	5.3%

differences at α ≤ 0.01; = not detected.