Stabilization of highly concentrated emulsions with oversaturated dispersed phase: Effect of surfactant/particle ratio

•Highly concentrated water-in-oil emulsion with an oversaturated dispersed phase.•Emulsion inclined to crystallization of an internal phase.•Mixture of fumed nanosilica with surfactant is used as stabilizer.•Transitional point separating particles and surfactant domination regions.•Most stable emulsion to crystallization associated with the transitional point.