Propanone dissolve fatoil in the macadamia nuts Propanone is more volatile lower boiling point than oilfat In sunlightsolar energy propanone evaporatevaporize leaving oilfathas a higher boiling pointAny seed like corn wheat  rice soya bean may be used instead of macadamia seed When oilfat is rubbed smeared on an opaque paper it becomes translucent