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 acidsFA% before saponificationaFA% saponification 1.00 MbFA% saponification 1.50 McFA% saponification 1.75 Md

Palmitic13.1913.5513.0613.07
Palmitoleic0.400.640.560.55
Stearic6.364.526.786.80
Oleic43.3243.9443.9743.03
Linoleic36.7037.3236.4636.51

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