Encapsulation and Stabilization of Oil-Soluble Pigment into a Protein-Carbohydrate Matrix

Solubilization phenomenon of fats and oils by solid components of soysauce (Part 10)

Abstract

Solubilization technique of oily substances into micellar solution of protein and carbohydrate was applied to encapsulation of oil-soluble pigment, paprika oleoresine or β-carotene. The solubilizates of the pigment in oil into the aqueous solution of 60%(w/w) corn syrup solids, 1% (w/w) polypeptone as nitrogen were solidified at 60°C under the vacum drying. The granules obtained by crushing and sieving the dried material showed a considerably high encapsulation ratio of pigment. Discoloration of the granulated pigment during 20 days storage at 60°C or under the irradiation by a fluorescent lamp was scarcely occurred when the granules contained abodt 12% oil containing paprika or β-carotene. Dispersibility into water of the oil-soluble pigment was also improved through the encapsulation into the protein-carbohydrate matrix.