Title Impact of Microfluidization on the Emulsifying Properties of Zein-Based Emulsions: Influence of Diutan Gum Concentration
Authors SANTOS GARCÍA, JENIFER, Trujillo-Cayado, Luis A. , del Aguila Alcaide, Maria , del Carmen Alfaro, Maria
External publication Si
Means Materials (Basel)
Scope Article
Nature Científica
JCR Quartile 1
SJR Quartile 2
JCR Impact 3.74800
SJR Impact 0.60400
Publication date 01/07/2021
ISI 000671270000001
DOI 10.3390/ma14133695
Abstract Microfluidization is a preparation method that can be used to obtain emulsions with submicron droplet sizes. The first objective of this study was to evaluate the influence of homogenization pressure and cycles on droplet sizes using response surface methodology. Secondly, the influence of the diutan gum concentration incorporated in the optimized emulsion on rheological properties, microstructure, and physical stability was investigated. Taking the response surface analysis into account, the emulsion processed at 20,000 psi after four cycles seemed to show the smallest Sauter diameter values. Hence, this emulsion was the starting point to incorporate diutan gum. Interestingly, the formation of a 3D network in the emulsion, observed by FESEM, was provoked by diutan gum. The emulsion formulated with 0.4 wt.% of diutan gum presented rheological gel properties and enhanced physical stability. This work highlights the importance of selecting optimized processing variables using the microfluidization technique and extends the knowledge of using diutan gum in combination with zein.
Keywords microfluidization; zein; diutan gum; rheology
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