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Visual appearance and microscopic observation of γ-oryzanol (a) O/W emulsions and (b) solid dispersions fabricated using purified water (no added emulsifier) or aqueous phases of T80 as a model emulsifier. For better visualization, 0.002% (w/w) of Sudan dye was added to MCT oil, containing 1% (w/w) of γ-oryzanol, before emulsion preparation. Emulsion's scale = 10 μm. Dispersion's scale = 50 nm.
