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Abstract
This present work underlined the influence of oil/water ratio on the delivery efficiency of multilayered emulsion-filled gel microparticles for β-carotene (BC). Based on electrostatic interactions and ion gelation techniques, the secondary emulsion and the multilayered emulsion-filled gel microparticles were utilized to improve the encapsulation efficiency (EE) and release ability of BC. The results revealed that the secondary emulsion significantly improved the EE of BC, and the degree of droplet aggregation decreased as the oil/water ratio increased. When the mass fraction of sodium alginate exceeded 0.08% (w/v), the particle size and ζ-potential of microparticles tended to be stable, the wrapping capacity of protein was more than 90%. Release studies indicated that these microparticles were regulated by different release kinetics at different pHs, which greatly improved the stability of BC with excellent sustained release. Thus, the multilayered emulsion-filled gel microparticles have a favorable controlled release for BC. • The degree of aggregation of secondary emulsion droplets was impacted by oil/water ratio. • The secondary emulsions significantly improved the encapsulation efficiency of BC. • The multilayer emulsion-filled gel microparticle showed different release kinetics at different pHs. • The multilayered emulsion-filled gel microparticles could sustained release BC.
Published Version
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