Antioxidant Pickering emulsions stabilised by zein/tannic acid colloidal particles with low concentration

Abstract

Pickering emulsions are widely used as a carrier and protective systems in many fields for encapsulationspecific bioactive substances. In this current study, we fabricated an antioxidant Pickering emulsions stabilised by zein/tannic acid nanoparticle. Results showed that coalescence and creaming stability of the emulsion highly depended on the concentration of the particles and the zein to TA ratio in the formulation. A 0.3% concentration of zein and a 1:1 zein to TA ratio was found to exhibit optimal stabilising capability. Given the intrinsic antioxidant activity of tannic acid, which forms a protective shell, the oxidative deterioration of the oil in the emulsion could be significantly prevented. These data suggest that the ZTNPs established in the present study are a promising emulsifier in the Pickering emulsion. It is promising as a green, safe, high-performance particle stabiliser and a novel food ingredient for use in interface-oriented food systems.

Fabrication and stability of Pickering emulsions using moringa seed residue protein: Effect of pH and ionic strength

“…Compared with emulsions stabilised by other emulsifiers, Pickering emulsions, particularly stabilised by food-grade particles, are less toxic and more environmental friendly, and have a higher resistance to coalescence (Yan et al, 2019). Due to their irreversible adsorption, Pickering particles may prevent the formation of thermodynamically unstable colloidal systems (Zhou et al, 2020).…”

Prolamin‐based complexes: Structure design and food‐related applications

“…Zein/TA binary complexes have two peaks at lower zein concentrations (0.1% or 0.2%). The particle size increases with lower PDI values, and the size is uniformly distributed at a zein concentration of 0.3% (Zhou, Gao, Li, Liang, & Li, 2020). The relative concentrations of polyphenols and prolamins influence both the interactions and types of aggregates formed.…”

Towards the systematic design of multilayer O/W emulsions with tannic acid as an interfacial antioxidant

“…(c) Tannic acid is known to form robust multilayers with a large variety of polymers and proteins on solid substrates using the layer-by-layer method adopted in the present investigation. [61][62][63][64][65][66][67][68][69] (d) Good antioxidant activity has been reported for multilayer lms 67,69 and for emulsions 54,[70][71][72] containing tannic acid. (e) The ME work mentioned before proves that tannic acid can be a valuable component of MEs simultaneously providing interfacial stabilization and antioxidant protection.…”