Table II.

Physical Properties of Oxyresveratrol Microemulsions

Formulations	pH	Viscositya (cP)	Conductivitya (μS/cm)	Particle sizea (nm)	Polydispersity indexa (pI)
Selected ME base	7.43	16.10 ± 1.01	13.80 ± 1.49	9.67 ± 0.58	0.04 ± 0.01
10% ORME	7.22	47.67 ± 0.83	12.83 ± 0.62	44.00 ± 17.43	0.24 ± 0.04
20% ORME	7.19	87.18 ± 1.45	12.10 ± 0.65	179.90 ± 84.17	0.34 ± 0.01
30% ORME	7.11	124.32 ± 1.88	10.39 ± 0.32	198.60 ± 55.62	0.50 ± 0.09

Selected ME was composed of isopropyl myristate (10% w/w), Tween 80 (35% w/w), isopropanol (35% w/w) with surfactant/cosurfactant ratio of 1:1, and water (20% w/w)

ME microemulsion, ORME oxyresveratrol-loaded ME

^aMean ± SD determined from three independent experiments