Title Microfluidization and characterization of phycocyanin-based emulsions stabilised using a fumed silica
Authors Tello P. , Sánchez R. , Trujillo-Cayado L.A. , SANTOS GARCÍA, JENIFER, Vladisavljevic G.
External publication No
Means LWT-Food Sci. Technol.
Scope Article
Nature Científica
JCR Quartile 1
SJR Quartile 1
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-85165186617&doi=10.1016%2fj.lwt.2023.115077&partnerID=40&md5=12ca81882b849602402918775478f0e4
Publication date 01/07/2023
ISI 001060763700001
Scopus Id 2-s2.0-85165186617
DOI 10.1016/j.lwt.2023.115077
Abstract Phycocyanin (PC), a protein pigment obtained from algae, is attracting attention due to the search for new plant-based alternatives to stabilise food products. Furthermore, PC presents surface activity and is able to reduce interfacial tension to create droplets in emulsions. However, PC is sensitive to degradation; one potential solution is to use it in combination with other materials. In this study, using PC in combination with Aerosil 200 to stabilise food-grade nanoemulsions was studied via rheology, laser diffraction and multiple light scattering. First, the microfluidization technique was used to reduce the droplet size of PC-based emulsions to a minimum of 243 nm after six passes. However, the resulting emulsion presented poor physical stability with an extensive creaming process. Incorporating Aerosil 200 reduced the creaming process at low concentrations and completely inhibited it above 5 g/100 g of Aerosil 200. This study shows that a combination of PC and Aerosil 200 was able to stabilise nanoemulsions, with potential applications for food products. © 2023 The Author(s)
Keywords Drops; Emulsification; Emulsions; Light scattering; Ostwald ripening; Silica; Aerosil 200; Aerosils; Food emulsions; Food grade; Fumed silicas; Microfluidization; Nanoemulsion; New plants; Phycocyanin
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