Oil Extraction from “Morelos Rice” Bran: Kinetics and Raw Oil Stability

Table 3

Evolution of the physicochemical parameters of raw oil under storage conditions.

Month	1	2	3	4	5	6	7	8	Average value	Standard deviation
Density	0.912	0.915	0.916	0.919	0.918	0.918	0.917	0.916	0.916	0.002
Saponification index	185.8	185.3	188.5	191.2	185.0	180.9	180.3	180.8	184.4	3.7
Acidity index	16.4	16.9	16.4	16.8	16.5	15.4	15.2	15.1	16.1	0.7
Iodine index	91.9	88.8	84.7	88.7	88.1	83.3	83.6	83.9	87.1	3.3
Peroxide index	1.25	1.19	1.13	1.61	2.35	3.34	4.61	5.97	2.51	1.7
FFA	8.3	8.5	8.3	8.4	8.3	7.7	7.7	7.6	8.0	0.3