Influence of polysaccharides on the physicochemical properties of lactoferrin–polyphenol conjugates coated β-carotene emulsions

Abstract This study investigated the influence of soybean soluble polysaccharides (SSPS) and beet pectin (BP) on the physicochemical properties of lactoferrin–polyphenol conjugates coated β-carotene oil-in-water (O/W) emulsions. β-Carotene emulsions prepared using the layer-by-layer electrostatic deposition method had different interfacial compositions: (i) primary emulsions (lactoferrin (LF) or LF-chlorogenic acid (CA)/(−)-epigallocatechin-3-gallate (EGCG) conjugates); (ii) secondary emulsions (LF-CA/EGCG-BP/SSPS). The physicochemical properties of β-carotene emulsions were evaluated by droplet size, ζ-potential, rheological behavior, transmission profiles using LUMiSizer and degradation of β-carotene in the emulsions during storage. At pH 3.0, droplet sizes were in the range of 250.0–306.3 nm for the primary emulsions, and 304.5–466.6 nm for the secondary emulsions. The ζ-potential values of the secondary emulsions were significantly ( p