Effect of Different Extraction Methods on Quality Characteristics of Rapeseed and Flaxseed Oils

Table 2

Fatty acid profiles of rapeseed and flaxseed oils obtained from different extraction methods.

Oil sample	Extraction methods	Pretreatment	Fatty acids (g/100 g)
			C16 : 0	C18 : 0	C18 : 1	C18 : 2	C18 : 3	SFA	UFA
Rapeseed oil	Screw press	Hot	3.55 ± 0.06^cdB	2.61 ± 0.06^cB	67.42 ± 0.03^aA	15.80 ± 0.31^aA	9.54 ± 0.17^aB	6.16 ± 0.12^dB	92.75 ± 0.45^aA
		Cold	3.66 ± 0.01^cA	2.76 ± 0.00^bA	67.20 ± 0.07^aB	15.68 ± 0.05^aB	9.68 ± 0.24^aA	6.43 ± 0.01^cA	92.56 ± 0.37^aB
	Hydraulic press	Hot	4.75 ± 0.04^aA	2.89 ± 0.03^aA	66.11 ± 0.45^aA	15.82 ± 0.09^aA	9.12 ± 0.07^aA	7.64 ± 0.07^aA	91.05 ± 0.43^aA
		Cold	4.29 ± 0.00^bB	2.87 ± 0.01^aB	64.25 ± 0.16^bB	15.73 ± 0.18^aB	8.24 ± 0.03^bB	7.15 ± 0.01^bB	88.22 ± 0.37^bB
	Soxhlet extraction	Hot	3.31 ± 0.00^eB	2.38 ± 0.00^eB	64.20 ± 0.00^bB	15.01 ± 0.01^bB	7.82 ± 0.02^bB	5.69 ± 0.00^eB	87.03 ± 0.01^bB
		Cold	3.47 ± 0.05^dA	2.51 ± 0.04^dA	66.98 ± 1.12^aA	15.79 ± 0.25^aA	8.29 ± 0.14^bA	5.98 ± 0.09^dA	91.05 ± 1.51^aA
Flaxseed oil	Screw press	Hot	5.39 ± 0.18^abB	4.86 ± 0.15^bB	24.33 ± 0.83^bB	13.49 ± 0.44^bB	50.77 ± 1.66^aB	10.25 ± 0.33^bA	88.59 ± 2.92^abB
		Cold	5.42 ± 0.36^abA	4.96 ± 0.33^aA	24.53 ± 1.17^bA	13.72 ± 0.90^abA	51.01 ± 3.25^aA	10.39 ± 0.69^abA	89.26 ± 5.42^aA
	Hydraulic press	Hot	5.27 ± 0.01^bB	4.99 ± 0.23^aB	25.55 ± 0.05^aB	14.48 ± 0.37^aA	47.72 ± 0.11^bB	10.26 ± 0.11^abB	87.75 ± 1.60^bB
		Cold	5.40 ± 0.12^abA	5.16 ± 0.04^aA	27.02 ± 1.34^abA	14.09 ± 0.02^abB	49.33 ± 1.65^aA	10.56 ± 0.04^abA	90.44 ± 1.62^aA
	Soxhlet extraction	Hot	5.70 ± 0.02^abB	4.82 ± 0.00^bB	24.63 ± 0.06^bB	13.80 ± 0.04^abB	48.14 ± 0.96^abB	10.52 ± 0.02^abB	86.57 ± 0.58^aA
		Cold	5.97 ± 0.06^aA	5.00 ± 0.12^aA	25.80 ± 0.19^abA	14.30 ± 0.12^abA	50.95 ± 0.68^aA	10.97 ± 0.18^aA	91.05 ± 1.27^aB

Note. Different letters in the same column represent significant differences ().