The Composition, Antioxidant and Antibacterial Activities of Cold-Pressed and Distilled Essential Oils of Citrus paradisi and Citrus grandis (L.) Osbeck

Table 1

The composition of essential oils of C. paradisi and C. grandis by GC-MS.

Retention time	Composition	C. paradisi		C. grandis
		Cold-pressed	Distilled	Cold-pressed	Distilled
3.62	α-Pinene	0.85	0.52	0.33	2.31
4.07	Thujene	0.8	0.39
4.09	Sabinene			0.29	1.34
4.17	β-Myrcene	3.06	2.06
4.19	β-Pinene			2.35	14.74
4.51	α-Phellandrene				0.13
4.78	Limonene	91.83	96.06	32.63	55.74
4.90	β-Ocimene	0.15		0.14
5.16	γ-Terpinene		0.18		0.64
5.34	Linalool				6.23
5.56	Dihydrocarveol				0.57
6.43	Citronellal				0.17
6.96	4-Terpinenol		0.21		0.55
7.14	Isopulegol	0.38
7.16	Decyl aldehyde		0.39
7.17	α-Terpineol				1.98
7.24	Geraniol				1.58
7.48	Carveol		0.19
7.70	β-Citral				4.13
7.79	Lemonol				0.75
7.90	Carvone				0.48
8.10	α-Citral (Neral)				4.6
9.04	1-Pentadecyne	0.2
9.47	Neryl acetate				0.31
9.59	α-Copaene	0.2
9.76	β-Elemene				0.12
10.23	β-Caryophyllene	0.43
10.38	β-Cubebene				0.13
10.41	β-farnesene	0.23
11.02	Germacrene D	0.35		0.61	2.71
11.11	Farnesene				0.12
11.24	γ-Elemene				0.37
11.41	β-Cadinene	0.28
13.46	β-Sinensal	0.34
13.67	Farnesol				0.3
13.94	Myristic acid			3.21
14.95	Nootkatone	0.19
15.10	Pentadecanoic acid			1.05
16.18	Palmitic acid			13.67
17.37	Stearyl alcohol			0.62
17.90	Oleic acid			6.57
18.10	Stearic acid			4.28
18.37	Hexadecanamide			2.14
18.45	Octadecyl acetate			0.33
19.97	Oleylamide			20.38
22.45	Allyl stearate			0.6
23.80	Erucamide			2.01
23.94	Spinacene			3.04
Terpenes		98.52	99.21	39.39	78.35
Oxygenated compounds		0.77	0.79	30.46	21.65
Others (nitrogenated or sulfated compounds)				23.68