Table 3.

Chemical composition of argan oil sterols and tocopherols by different extraction methods and in different geographical origins.

Extraction Method	Extraction by Mechanical Press										Artisanal Extraction				Extraction by Organic Solvents
Roasting	Roasted Argan Seeds					Non-Roasted Argan Seeds					Roasted Argan Seeds			Non-Roasted Argan Seeds			Roasted Argan Seeds
Depuling	Mechanical										Manual	Animal (Goat Dejections )			Mechanical
References	[38]	[39]	[31]	[40]	[20]	[41]	[31]	[31]	[31]	[31]	[41]	[41]	[40]	[40]	[40]	[40]	[40]
Geographical origin	Agadir	Taroudant	Tizdi Essaouira	Benaiznassen Chtouka ait baha	Tamanar Essaouira	Tiout Taroudant	Beniznassen Oujda	Ait mzal Chtouka ait baha	Ighrem Taroudant	Tizdi Essaouira	Tiout Taroudant	Tiout Taroudant	Tamanar Essaouira	Tamanar Essaouira	Tamanar Essaouira	Ighrem	Tamanar Essaouira
	Tocopherols mg/kg of oil
α-Tocopherol	44.5 ± 6.2	42.23 ± 2.52	26.6	37.2	35	16 ± 1.6	37.2	33.2	49.3	32.7	13 ± 1.3	30 ± 3.0	29.6	33.0	32.0	49.3	29.6
β-Tocopherol	3.1 ± 0.8	3.07 ± 0.40													1.1		1.2
γ-Tocopherol	616.9 ± 15.8	715.42 ± 7.8	631.3	701.1	480	382 ± 38.2	701.1	615.6	545.9	621.1	345 ± 34.5	283 ± 28.3	619.1	599.3	640.0	545.9	581.3
δ-Tocopherol	50.8 ± 6.8	103.22 ± 4.19	59.5	37.2	122	21 ± 2.1	37.2	38.0	38.7	50.9	32 ± 3.2	21 ± 2.1	50.2	46.4	45.4	38.7	56.3
	Sterol mg/100 g of oil
Schottenol			46.66	48.47	142	44 ± 2.2	48.47	44.99	46.12	43.39	46 ± 2.3	45 ± 2.3	46.03	47.43	44.62	46.12	45.39
Spinasterol			37.07	35.44	115	39 ± 2.0	35.44	39.17	39.29	38.50	38 ± 1.9	42 ± 2.1	36.11	38.54	37.05	39.29	36.91
Stigmasta-8,22-dien-3-ol			4.31	4.85	9	5 ± 0.3	4.85	4.77	5.40	4.57	5 ± 0.3	4 ± 0.2	4.08	3.01	4.21	5.40	4.99
Stigma 7,24--dien-3-ol			4.81	2.57		6 ± 0.3	2.57	4.71	3.55	5.94	5 ± 0.3	5 ± 0.3	4.48	4.67	6.89	3.55	4.48
Campesterol			0.20	0.11			0.11	0.24	0.31	0.17			0.16	0.14	0.16	0.31	0.20