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

Table 1

Hamlin oils linear retention indices and percent peak areas.

Compound	LRI (observed)	LRI (literature)	Early  % peak area	Relative standard deviation	Early  % peak area	Relative standard deviation	Late AS % peak area	Relative standard deviation	Late SY % peak area	Relative standard deviation	Identified
α-Thujene	922	928 [11]	Trace	7.14	Trace	2.73	Trace	7.85	Trace	6.54	MS, RI
α-Pinene	943	939 [11]	0.49	2.63	0.49	2.67	0.50	0.31	0.50	1.22	MS, ST, RI
Sabinene	975	972 [11]	0.14	5.21	0.17	3.24	0.14	4.52	0.17	5.20	MS, RI
β-Myrcene	995	992 [11]	1.42	3.26	1.43	3.17	1.38	0.67	1.42	0.71	MS, ST, RI
Octanal	1004	1006 [12]	0.69	2.18	0.62	2.66	0.67	2.65	0.62	2.75	MS, RI
δ-3-Carene	1020	1011 [12]	0.02	3.42	0.02	2.98	0.03	3.10	0.03	2.83	MS, RI
Limonene	1045	1033 [11]	96.7	2.60	96.7	3.00	96.6	0.86	96.6	0.66	MS, RI
γ-Terpinene	1083	1074 [11]	Trace	9.10		—	nd	—	nd	—	MS, RI
Terpinolene	1106	1091 [12]	0.01	2.09	0.01	1.84	0.01	0.79	0.01	1.04	MS, RI
Linalool	1110	1100 [11]	0.04	3.40	0.04	3.69	0.04	1.21	0.03	0.48	MS, ST, RI
Nonanal	1113	1104 [12]	0.01	1.49	0.01	1.38	0.01	0.34	0.01	1.03	MS, RI
Perillene	1123	1126 [12]	0.01	2.55	0.02	2.67	0.02	0.88	0.02	0.75	MS, RI
p-Mentha-2,8-dien-1-ol	1142	1132 [11]	Trace	8.96	Trace	4.48	nd	—	Trace	0.98	MS, RI
Limonene oxide	1150	1142 [11]	Trace	2.13	Trace	2.43	Trace	0.95	Trace	0.59	MS, RI
Citronellal	1161	1159 [11]	0.03	2.90	0.04	2.89	0.04	0.76	0.04	0.71	MS, ST, RI
1-Nonanol	1176	1171 [12]	Trace	4.12	Trace	5.12	Trace	4.45	Trace	4.21	MS, RI
α-Terpineol	1196	1195 [11]	Trace	4.46	Trace	3.56	Trace	4.25	nd	—	MS, RI
Decanal	1211	1209 [11]	0.07	2.78	0.05	2.58	0.09	0.80	0.08	0.80	MS, ST, RI
trans-Carveol	1217	1217 [11]	Trace	6.21	Trace	2.73	Trace	7.51	Trace	1.24	MS, RI
Citronellol	1233	1233 [11]	0.01	3.53	0.02	2.79	0.01	1.40	0.01	0.85	MS, ST, RI
Neral	1251	1247 [11]	0.03	2.55	0.03	2.56	0.03	0.86	0.02	0.97	MS, ST, RI
Carvone	1261	1255 [11]	0.01	4.08	0.01	2.47	Trace	2.54	Trace	1.25	MS, ST, RI
2-Decenal	1269	1262 [11]	nd	—	nd	—	Trace	3.87	Trace	3.75	MS, ST, RI
Geranial	1278	1277 [11]	0.04	2.17	0.03	2.38	0.04	0.55	0.03	0.94	MS, ST, RI
Perillaldehyde	1293	1279 [12]	0.01	2.34	0.01	2.56	0.01	2.37	0.01	2.54	MS, ST, RI
Undecanal	1311	1306 [12]	0.01	2.73	0.01	2.43	0.01	3.67	0.01	2.22	MS, RI
2,4-Decadienal	1327	1317 [11]	nd	—	nd	—	Trace	3.42	Trace	3.31	MS, ST, RI
Citronellyl acetate	1354	1357 [11]	0.01	3.25	0.01	2.66	0.01	4.90	0.01	5.80	MS, ST, RI
α-Terpinyl acetate	1366	1352 [11]	0.01	5.75	0.01	2.93	0.01	8.18	0.01	5.73	MS, ST, RI
α-Copaene	1385	1377 [11]	0.01	1.74	Trace	3.49	Trace	1.17	Trace	1.86	MS, RI
β-Cubebene	1398	1390 [12]	0.02	2.07	0.03	1.82	0.02	0.97	0.02	1.42	MS, RI
Dodecanal	1411	1407 [12]	0.04	3.06	0.04	1.59	0.04	8.27	0.05	6.47	MS, ST, RI
β-Longipinene	1413	1408 [13]	Trace	5.01	Trace	4.82	0.01	1.50	0.01	1.80	MS, RI
β-Caryophyllene	1446	1432 [12]	0.01	6.31	0.02	1.62	0.01	1.66	0.02	2.21	MS, RI
β-Humulene	1456	1454 [12]	0.01	7.10	0.01	4.31	0.01	7.62	0.01	7.09	MS, RI
α-Humulene	1461	1467 [11]	Trace	5.09	Trace	3.07	Trace	4.55	Trace	5.94	MS, RI
Isogermacrene-D	1484	1487 [11]	0.01	5.06	0.01	2.70	0.01	8.48	0.01	2.86	MS, RI
γ-Muurolene	1501	1499 [12]	Trace	3.38	Trace	1.39	Trace	0.59	Trace	3.22	MS, RI
Valencene	1510	1506 [12]	0.02	4.31	0.02	6.76	0.02	2.98	0.02	2.37	MS, RI
α-Farnesene	1523	1508 [12]	0.01	5.57	0.02	1.21	0.02	2.95	0.04	3.58	MS, RI
δ-Cadinene	1532	1524 [12]	Trace	4.49	Trace	1.46	Trace	2.56	Trace	6.00	MS, RI
α-Elemol	1546	1547 [11]	0.03	7.82	0.03	1.89	0.03	4.24	0.03	4.65	MS, RI
Caryophyllene oxide	1596	1581 [11]	Trace	3.85	0.01	0.86	Trace	2.30	Trace	1.95	MS, RI
β-Sinensal	1715	1706 [11]	0.01	9.39	0.01	3.54	0.01	8.62	0.01	4.22	MS, RI
Farnesol	1756	1742 [12]	nd	—	Trace	1.87	Trace	6.27	Trace	7.99	MS, RI
α-Sinensal	1766	1760 [12]	Trace	8.23	Trace	2.13	Trace	7.19	Trace	3.76	MS, RI

= huanglongbing asymptomatic samples, = huanglongbing symptomatic samples, “identified by,” MS = mass spectral library, ST = internal standard, RI = matching calculated retention index to literature value; = not detected for this sample.