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Microstructural basis for water release from glycerol monostearate structured emulsions upon transformation from the α-gel to the coagel phase

Paper ID Volume ID Publish Year Pages File Format Full-Text
19896 43142 2016 5 PDF Available
Title
Microstructural basis for water release from glycerol monostearate structured emulsions upon transformation from the α-gel to the coagel phase
Abstract

•Emulsions in the α-gel phase have smooth droplet surfaces.•Emulsions in the coagel phase have porous droplet surfaces.•The porous surface leads to water syneresis upon polymorphic transformation.

This work characterized changes in surface morphology of a glyceryl monostearate structured emulsion (MG-structured emulsion) during the polymorphic transformation from the α-gel phase to the coagel phase. The effects of using various concentrations of co-emulsifier and adding xanthan gum on emulsion structure and stability were also investigated. Microscopy methods, including light microscopy, cryogenic-scanning electron microscopy, and X-ray diffraction were employed in the examination of the emulsion microstructure. Results showed that the MG-structured emulsion has a smooth droplet surface in the α-gel phase and a porous surface in the coagel phase. The formation of a porous surface during the polymorphic transformation leads to water release upon emulsion destabilization. Formulating with higher content of co-emulsifier or adding xanthan gum enhanced the multi-lamellar structure and stability of this structured emulsion.

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Keywords
Glycerol monostearate (PubChem CID: 24699); Sodium stearoyl lactylate (PubChem CID: 23671849); Xanthan gum (PubChem CID: 7107)Monoglyceride structured emulsion; Polymorphic phase behaviour; SEM; Surface morphology
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Microstructural basis for water release from glycerol monostearate structured emulsions upon transformation from the α-gel to the coagel phase
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food Structure - Volume 7, January 2016, Pages 1–5
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us