Tannic Acid-Aminated Sugar Beet Pectin Nanoparticles as a Stabilizer of High-Internal-Phase Pickering Emulsions

Abstract

Pickering stabilizers with additional antioxidant, photostabilizing, and metal-chelating properties are suitable for structuring multifunctional Pickering emulsion systems. Tannic acid (TA) is a potential material which when adsorbed onto the interface may impart antioxidant, UV-light-shielding, and chelating properties to Pickering stabilizers. Herein, we report a type of TA polyelectrolyte nanoparticles (NPs) fabricated following a complexation between TA and aminated sugar beet pectin (SBP-NH2). This study is geared toward investigating the performance of TA/SBP-NH2 NPs in stabilizing Pickering emulsions and protecting β-carotene from degradation. TA/SBP-NH2 NPs formed under optimum conditions had a mean diameter of 82 nm with a sphere-like shape. Because of their favorable surface wettability (91.2°), TA/SBP-NH2 NPs promoted formation of the low-, medium-, and high-internal-phase Pickering emulsions (HIPEs) in an oil volume fraction (φ)-dependent manner; the TA/SBP-NH2 NP-stabilized HIPE demonstrated viscoelastic properties increasing with the increasing concentration (c) of nanoparticles. Due to the excellent storage stability and UV light-absorbing capacity, the photostability of β-carotene was significantly improved by a TA/SBP-NH2 NP-stabilized HIPE (φ = 0.75; c = 3 mg/mL). Altogether, this study highlights that TA/SBP-NH2 NPs have potential applications in structuring Pickering emulsions with improved protective effects on loaded lipophilic compounds.

Enhancing the Emulsification and Photostability Properties of Pectin from Different Sources Using Genipin Crosslinking Technique

“…The retention rate increased to 24.2–34.3% and 78.6–87.3% for β -carotene-loaded emulsions stabilized by control pectin and crosslinked pectin. The better UV radiation blocking of pectin-stabilized than Tween-stabilized emulsions was ascribed to the presence of a small number of phenolic compounds (scavenging free radical) and a thicker adsorbed hydrated layer (blocking UV radiation) [ 12 ]. The excellent UV blocking ability of crosslinked pectin was contributed by its thicker and denser hydration layer at the MCT-water interface, and its blue substances excellent UV-blocking ability [ 14 ].…”

“…One of the potential applications of emulsion is used to deliver the active component [ 10 ]. Many active components are photosensitive, especially to ultraviolet (UV) light [ 11 , 12 ]. Adding antioxidant substances into the emulsion and adopting an opaque container can improve the photostability of the photosensitive substances in the emulsion [ 13 ].…”

Ultrastable High Internal Phase Pickering Emulsions: Forming Mechanism, Processability, and Application in 3D Printing

“…Obviously, at the φ values below 0.9, the emulsion droplets were tightly packed, and the average diameter decreased as the φ values increased. However, further increasing the φ value to 0.9, the particle size of the emulsions increased, which was also reported by Chen et al 21 In order to further investigate the characteristics of the PPH NP-stabilized HIPEs, the value of 0.80 was selected for subsequent study.…”

“…Renewable, degradable, green, safe, and cheap materials that can irreversibly adsorb at the O/W interface have been regarded as excellent candidates for the preparation of HIPPEs in recent years. Biopolymer-based renewable and biocompatible particles, like protein, polysaccharide, polyphenol particles, and their complex are rapidly developed for stabilizing HIPPEs. , Unfortunately, most of these compounds need to be modified to be used to stabilize the robust HIPPEs due to their drawbacks in wettability and solubility . Recently, protein/polysaccharide complex particles have been widely studied to stabilize the HIPPEs .…”

“…Biopolymer-based renewable and biocompatible particles, like protein, 2 polysaccharide, 19 polyphenol particles, 20 and their complex are rapidly developed for stabilizing HIPPEs. 21,22 Unfortunately, most of these compounds need to be modified to be used to stabilize the robust HIPPEs due to their drawbacks in wettability and solubility. 23 Recently, protein/polysaccharide complex particles have been widely studied to stabilize the HIPPEs.…”