Chemical characterization of oils produced by some native and introduced genotypes of argan tree in eastern Morocco using HPLC-DAD/GC-MS, and the evaluation of their physicochemical parameters | OCL

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Table 4

Specific extinction, free acidity (%) and peroxide index (Meq O₂/kg) of argan seeds oil of the studied genotypes cultivated in three regions of Morocco.

Genotype	K232	K270	Δ K	Free acidity (%)	Peroxide index
O1	1.10 ± 0.24^ab	0.11 ± 0.00^a	0.00 ± 0.00^a	0.27 ± 0.00^c	3.30 ± 0.15^f
O2	0.95 ± 0.04^a	0.11 ± 0.00^a	0.00 ± 0.00^a	0.29 ± 0.00^c	2.29 ± 0.1^de
O3	0.95 ± 0.01^a	0.19 ± 0.00^bc	0.00 ± 0.00^a	0.12 ± 0.01^a	1.42 ± 0.10^ab
O4	0.98 ± 0.06^a	0.10 ± 0.00^a	0.00 ± 0.00^a	0.27 ± 0.00^c	2.60 ± 0.07^e
O5	0.88 ± 0.08^a	0.09 ± 0.00^a	0.00 ± 0.00^a	0.55 ± 0.02e	1.19 ± 0.06^a
O6	1.00 ± 0.05^a	0.21 ± 0.00^bc	0.00 ± 0.00^a	0.54 ± 0.02^ef	1.07 ± 0.04^a
O7	0.95 ± 0.04^a	0.11 ± 0.00^a	0.00 ± 0.00^a	0.15 ± 0.00^b	1.58 ± 0.06^bcd
O8	0.99 ± 0.05^a	0.17 ± 0.00^b	0.00 ± 0.00^a	0.40 ± 0.00^d	1.15 ± 0.10^a
CH1	1.03 ± 0.08^a	0.18 ± 0.01^bc	0.00 ± 0.00^a	0.54 ± 0.00^e	1.50 ± 0.08^abc
CH2	0.88 ± 0.04^a	0.17 ± 0.00^b	0.00 ± 0.00^a	0.53 ± 0.00^e	1.32 ± 0.20^ab
CH3	1.00 ± 0.04^a	0.19 ± 0.00^bc	0.00 ± 0.00^a	0.40 ± 0.00^d	1.45 ± 0.14^ab
CH4	1.14 ± 0.01^ab	0.16 ± 0.00^b	0.00 ± 0.00^a	0.51 ± 0.00^e	1.36 ± 0.05^ab
CH5	1.04 ± 0.06^a	0.21 ± 0.00^cd	0.00 ± 0.00^a	0.54 ± 0.01^e	2.17 ± 0.09^de
CH6	0.92 ± 0.04^a	0.17 ± 0.008^b	0.01 ± 0.00^a	0.54 ± 0.01^e	2.07 ± 0.12^cde
AG1	1.36 ± 0.06^b	0.12 ± 0.005^a	0.00 ± 0.00^a	0.64 ± 0.01^f	1.27 ± 0.09^ab
AG2	1.03 ± 0.13^a	0.23 ± 0.02^d	0.01 ± 0.00^a	0.54 ± 0.00^e	1.49 ± 0.15^abc

Values followed by different letters are significantly different (P < 0.05).

Values with the same letters indicate no significant difference (P > 0.05).

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