Development and characterization of medium and high internal phase novel multiple Pickering emulsions stabilized by hordein nanoparticles. (15th March 2022)

• Record Type: Journal Article
• Authors: Boostani, Sareh; Riazi, Masoud; Marefati, Ali; Rayner, Marilyn; Hosseini, Seyed Mohammad Hashem
• Is Part Of: Food chemistry. Volume 372(2022)
• Publication Date: 2022-03-15
• Subjects: Double Pickering emulsion -- Encapsulation -- Hordein -- MLS -- Vitamin B12; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2021.131354
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlight: Hordein-stabilized W1 /O/W2 multiple Pickering emulsions (MPEs) were fabricated. Triphasic water-in-oil/air-in-water was obtained at dispersed phase fraction Φ 0.5. Hordein nanoparticles stabilized high internal phase MPEs at Φ 0.8. Promising results were obtained in the encapsulation of vitamin B12 as a model. Abstract: Medium and high internal phase W1 /O/W2 multiple Pickering emulsions (MPEs) were fabricated by physically-modified hordein nanoparticles. A triphasic system was developed at dispersed phase volume fraction ( Φ ) of 0.5 with an overrun value of ∼40%. No overrun was detected in high internal phase MPEs ( Φ 0.8). Optical and confocal laser scanning microscopy confirmed the formation of MPEs. Monomodal droplet size distribution with a mean diameter of 32.90 and 21.48 μm was observed for MPEs at Φ 0.5 and Φ 0.8, respectively. Static multiple light scattering confirmed that creaming was the main mechanism behind the instability of MPEs. Both MPEs revealed pseudo-plastic behavior and predominant storage modulus ( G ′) over the applied frequency range. The encapsulation efficiency of vitamin B12 in MPEs was 98.3% and remained relatively constant during 28 d. These results suggested the excellent potential of hordein nanoparticles as appropriate candidate for designing multi-structural colloidal systems using plant proteins.