Betarubin microcapsule as well as preparation method and application thereof

The endogenous emulsification method, which crosslinks the SA-SPI complex with CaCO3 to form calcium alginate gel beads, solves the problem of insufficient stability of betalain microcapsules, and realizes the preparation of betalain microcapsules with controllable particle size and high stability, which is suitable for large-scale application.

CN120898934APending Publication Date: 2025-11-07HAINAN STATE FARMS ACAD OF SCI GRP CO LTD
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Patent Information

Application Number
CN202511452916.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-13
Publication Date
2025-11-07

AI Technical Summary

Technical Problem

Existing betalain microcapsules have short stability maintenance time and fast degradation rate. Furthermore, commonly used preparation methods such as spray drying are prone to pigment deactivation at high temperatures, while the sharp-pore method results in large particles and short-lasting effects, which limits their large-scale application.

Method used

Using the SA-SPI composite as the composite wall material, betalain was encapsulated in calcium alginate gel beads through endogenous emulsification. CaCO3 slowly released Ca2+ and crosslinked with sodium alginate to form stable calcium alginate gel beads. Combined with pre-freeze-lyophilization treatment, betalain microcapsules with controllable particle size and high stability were prepared.

Benefits of technology

This improved the stability and operational safety of betalain microcapsules, reduced costs, broadened their application range, and made them suitable for large-scale production.

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Abstract

The invention relates to the technical field of preparation of food additives, in particular to a betacyanin microcapsule as well as a preparation method and application thereof. The preparation method comprises the following steps: jointly dissolving sodium alginate and soybean protein isolate in water to obtain an SA-SPI compound; the SA-SPI compound, CaCO3 and betacyanin are mixed, and a water phase is formed; mixing liquid paraffin, glacial acetic acid and Tween 80 to obtain an acetic acid-containing oil phase; mixing the water phase with the acetic acid-containing oil phase to form a water-in-oil emulsion, and standing to form calcium alginate gel beads; the calcium alginate gel beads are subjected to pre-freezing-freeze-drying treatment, and the betacyanin microcapsules are obtained. The prepared betacyanin microcapsule has the characteristics of controllable particle size, high stability and easiness in industrialization, and the application range of betacyanin is widened. In addition, the preparation method disclosed by the invention is safe and simple to operate, has the advantages of low cost and high benefit, and can be directly applied to large-scale production.
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