Changes in N, K, and Fatty Acid Composition of Black Cumin Seeds Affected by Nitrogen Doses under Supplemental Potassium Application

Table 4

Fatty acid composition of black cumin oil extracted from seeds under supplemental K in 2011 and 2012.

Fatty acids	2011		2012
	Control	K+	Control	K+
Myristic (14 : 0)	0.180	0.183
Palmitic (16 : 0)
Palmitoleic (16 : 1)	0.175	0.170	0.170	0.217
Stearic (18 : 0)	3.515	3.630
Oleic (18 : 1)
Linoleic (18 : 2)
Linolenic (18 : 3)	0.524	0.514	0.576	0.567
Arachidic (20 : 0)	0.177	0.177	0.175	0.190
Eicosenoic (20 : 1)	0.385	0.400	0.360	0.347
Eicosadienoic (20 : 2)			2.720	2.843
Total	98.80	99.23	99.25	99.52
SAFAs	17.27	17.55	16.37	17.45
MUFAs	24.62	25.76	22.38	24.45
PUFAs	57.08	56.10	60.68	57.81
Total UFAs	81.71	81.86	83.06	82.26

shows comparison between K applications in each year and means followed by the same line with different letters are significant at . SAFA: saturated fatty acids; MUFA: monounsaturated fatty acids; PUFA: polyunsaturated fatty acids; UFA: unsaturated fatty acids; K+: 50 kg K ha⁻¹.