Oxidative Stability at Different Storage Conditions and Adulteration Detection of Prickly Pear Seeds Oil

Table 1

Fatty acids composition of prickly pear seeds oil as a function of storage time at various temperatures: 4°C, 25°C, 40°C, and uncontrolled room temperature.

Temperature (°C)	Time (months)	Fatty acids (%)
		Myristic	Palmitic	Palmitoleic	Stearic	Oleic	Linoleic	Linolenic	Arachic	Eicosenoic
		acid	acid	acid	acid	acid	acid	acid	acid	acid
		C14 : 0	C16 : 0	C16 : 1	C18 : 0	1	C18 : 2	C18 : 3	C20 : 0	C20 : 1
—	0	0.07^a ± 0.04	12.34^a ± 0.01	0.74^a ± 0.03	3.24^a ± 0.05	21.25^a ± 0.10	61.44^a ± 0.06	0.24^a ± 0.07	0.31^a ± 0.01	0.29^a ± 0.07
4	6	0.06^a ± 0.02	12.28^a ± 0.01	0.77^a ± 0.02	3.25^a ± 0.02	21.26^a ± 0.03	61.43^b ± 0.09	0.22^a ± 0.04	0.29^a ± 0.01	0.28^a ± 0.06
	12	0.07^a ± 0.03	12.29^a ± 0.06	0.73^a ± 0.02	3.26^a ± 0.02	21.27^a ± 0.03	61.44^b ± 0.09	0.26^a ± 0.02	0.34^a ± 0.06	0.25^a ± 0.09
	18	0.05^a ± 0.03	12.31^a ± 0.11	0.72^a ± 0.01	3.26^a ± 0.01	21.35^a ± 0.18	61.51^b ± 0.01	0.25^a ± 0.02	0.32^a ± 0.06	0.29^a ± 0.00
25	6	0.07^a ± 0.01	12.26^a ± 0.01	0.72^a ± 0.01	3.32^b ± 0.15	21.24^a ± 0.07	61.49^b ± 0.09	0.24^a ± 0.01	0.27^a ± 0.03	0.36^a ± 0.05
	12	0.08^a ± 0.03	12.33^a ± 0.10	0.75^a ± 0.01	3.28^a ± 0.07	21.31^a ± 0.07	61.47^b ± 0.10	0.27^a ± 0.01	0.28^a ± 0.01	0.25^a ± 0.07
	18	0.06^a ± 0.01	12.31^a ± 0.06	0.73^a ± 0.02	3.28^a ± 0.07	21.31^a ± 0.07	61.49^b ± 0.08	0.25^a ± 0.01	0.25^a ± 0.01	0.27^a ± 0.04
40	6	0.08^a ± 0.01	12.31^a ± 0.04	0.76^a ± 0.00	3.28^ab ± 0.04	21.48^b ± 0.03	61.02^a ± 0.07	0.26^a ± 0.00	0.26^a ± 0.00	0.34^a ± 0.01
	12	0.07^a ± 0.01	12.40^b ± 0.05	0.74^a ± 0.02	3.31^a ± 0.01	21.49^b ± 0.07	61.05^a ± 0.09	0.24^a ± 0.01	0.26^a ± 0.03	0.29^a ± 0.05
	18	0.09^a ± 0.03	12.40^a ± 0.05	0.71^a ± 0.02	3.62^b ± 0.01	22.47^b ± 0.07	60.10^a ± 0.13	0.24^a ± 0.01	0.31^a ± 0.00	0.28^a ± 0.06
RT	6	0.05^a ± 0.02	12.34^a ± 0.01	0.75^a ± 0.03	3.24^a ± 0.05	21.25^a ± 0.10	61.42^b ± 0.05	0.26^a ± 0.01	0.29^a ± 0.00	0.33^a ± 0.05
	12	0.05^a ± 0.02	12.29^a ± 0.08	0.74^a ± 0.00	3.29^a ± 0.06	21.27^a ± 0.07	61.56^b ± 0.12	0.26^a ± 0.03	0.29^a ± 0.01	0.27^a ± 0.02
	18	0.07^a ± 0.03	12.28^a ± 0.04	0.75^a ± 0.00	3.34^a ± 0.08	21.28^a ± 0.03	61.42^b ± 0.12	0.23^a ± 0.04	0.30^a ± 0.01	0.28^a ± 0.05

Means with the same letter within the column for the same storage time are not significantly different according to Student–Newman–Keuls test at  < 0.05. RT: uncontrolled room temperature ranging between 4°C and 40°C. Time 0 corresponds to the beginning of the trial (T₀).