Chemical Composition and Physicochemical Analysis of Opuntia dillenii Extracts Grown in Morocco

Table 3

Physicochemical properties of O. dillenii seed oils from the three localities.

Properties	Locality			Codex Stan 210–1999 and COI standards [26]
	Oujda	Nador	Essaouira
Acid value (mg KOH/g of oil)	5.61 ± 0.04	7.85 ± 0.20	8.97 ± 0.41	—
Saponification value (mg of KOH/g of oil)	238.42 ± 1.73	252.45 ± 1.54	210.37 ± 0.98	168–265
Ester value (mg KOH/g of oil)	232.82 ± 1.92	244.60 ± 1.34	201.40 ± 1.63	—
Peroxide value (Meq O2/kg of oil)	5.85 ± 0.46	6.35 ± 0.92	5.60 ± 0.91	Max (10)
Density (20°C)	0.926 ± 0.04	0.925 ± 0.18	0.913 ± 0.37	0.881–0.927
Refractive index (20°C)	1.476 ± 0.93	1.478 ± 0.82	1.477 ± 0.62	1.447–1.477
Water content (%)	0.148 ± 0.03	0.189 ± 0.09	0.154 ± 0.10	Max 0.2%
pH	6.54 ± 0.4	6.50 ± 0.34	6.96 ± 0.94	—