Please use this identifier to cite or link to this item:
https://hdl.handle.net/10216/137332
Author(s): | Martins, D Berta Nogueiro Estevinho Fernando Rocha Dourado, F Gama, M |
Title: | A dry and fully dispersible bacterial cellulose formulation as a stabilizer for oil-in-water emulsions |
Issue Date: | 2020 |
Abstract: | Bacterial cellulose (BC) is an emerging alternative to plant cellulose in different applications. Several works demonstrated the potential of never-dried BC; however, envisioning real industrial applications, a dry product retaining its functional properties upon rehydration is preferable. A dry and completely redispersible formulation of BC with carboxymethyl cellulose (CMC) was prepared by Spray-drying. The obtained material showed a Zeta Potential of (-67.0 +/- 3.9) mV, a Dv(50) of (601 +/- 19.7) and was able to decrease the oil/water interface energy. The dry BC:CMC formulation was employed as a stabilizer in oil-in-water emulsions, in parallel with commercial plant celluloses and Xanthan gum. The emulsions were monitored over time by optical microscopy and characterized by rheological measurements. BC:CMC effectively stabilized emulsions against coalescence and creaming, at a concentration of 0.50% - contrarily to other commercial dry celluloses - due to the Pickering effect and to the structuring of the continuous phase, as seen with Cryo-SEM. |
Subject: | Engenharia, Ciências da engenharia e tecnologias Engineering, Engineering and technology |
Scientific areas: | Ciências da engenharia e tecnologias Engineering and technology |
URI: | https://hdl.handle.net/10216/137332 |
Document Type: | Artigo em Revista Científica Internacional |
Rights: | restrictedAccess |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
Files in This Item:
File | Description | Size | Format | |
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420735.pdf Restricted Access | 3.73 MB | Adobe PDF | Request a copy from the Author(s) |
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