Saponification of Jatropha curcas Seed Oil: Optimization by D-Optimal Design

Table 5

D-optimal design arrangement for the concentration effect of ethanolic alkaline solution KOH, temperature (°C) and time (h) to the FAs composition before and after the saponification.

Fatty acids	FA% before saponification^a	FA% saponification 1.00 M^b	FA% saponification 1.50 M^c	FA% saponification 1.75 M^d
Palmitic	13.19	13.55	13.06	13.07
Palmitoleic	0.40	0.64	0.56	0.55
Stearic	6.36	4.52	6.78	6.80
Oleic	43.32	43.94	43.97	43.03
Linoleic	36.70	37.32	36.46	36.51

^aJ. curcas seed oil, ^b, c, dsaponification at 70°C.