TABLE 2.

Contents (μg/g) of tocopherols, sterols and fatty acids in hull extract obtained using conventional extractions or supercritical CO₂ as eluent.

	Conventional extractions	CO2 extraction
α- tocopherol	144 ± 5	100 ± 4
δ-tocopherol	−	19.5 ± 0.6
γ-tocopherol	16.9 ± 0.5	602 ± 24
β-sitosterol	384 ± 12	9474 ± 452
campesterol	40.5 ± 0.4	1678 ± 51
stigmasterol	158 ± 5	5686 ± 194
C16:0	551.1 ± 9.1	$378.3\times 10{}^3\pm 4.7\times 10{}^3$
C18:0	56.6 ± 0.9	$56.6\times 10{}^3\pm 0.8\times 10{}^3$
C18:1	528.2 ± 9.2	$196.1\times 10{}^3\pm 5.1\times 10{}^3$
C18:2	515.9 ± 9.2	$193.4\times 10{}^3\pm 5.3\times 10{}^3$

Values are reported as means ± SD.