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The effect of mono-diglycerides on the mechanical properties, microstructure and physical stability of an edible rice bran wax -- gelatin biphasic gel system
  • Ariana Saffold,
  • Nuria Acevedo
Ariana Saffold
Iowa State University of Science and Technology

Corresponding Author:[email protected]

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Nuria Acevedo
Iowa State Univeristy
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Bigels, are prepared by homogenization of an organogel and hydrogel. Bigels can offer improved properties when compared to other gelled systems due to its semi-solid internal phase and supramolecular interactions between components. The objective of this study was to determine the effect of mono-diglycerides (MDG) on the supramolecular structure and interactions, physical stability and mechanical properties of a rice bran wax (RBW)–gelatin bigels. The organogel-to-hydrogel (OG:HG) ratios tested were 60:40, 70:30 and 80:20 with MDG incorporated at four concentrations (0.5, 1, 2, 3% (w/w)). Bigels were analyzed using nuclear magnetic resonance spectroscopy (NMR), confocal scanning laser microscopy (CSLM), Fourier transform infrared spectroscopy (FTIR), texture analysis and liquid binding capacity studies. The results showed that MDG have a dual effect on the structural organization and stability of the systems; they act as emulsifiers and/or crystallization modifiers. CSLM and FTIR showed that the addition of MDG had the greatest effect on the microstructure of the 60:40 OG:HG ratio, where MDG concentrations 0.5 and 1% (w/w) exhibited a reduction in the size of the oleogel regions while concentrations 2 and 3% (w/w) showed a phase inversion. MDG addition resulted in a gradual decrease in bigel hardness, but an enhancement of physical stability.
07 Feb 2022Submitted to Journal of the American Oil Chemists' Society
07 Feb 2022Submission Checks Completed
07 Feb 2022Assigned to Editor
18 Feb 2022Reviewer(s) Assigned
08 Mar 2022Review(s) Completed, Editorial Evaluation Pending
21 Apr 2022Editorial Decision: Revise Major
21 Jun 20221st Revision Received
22 Jun 2022Assigned to Editor
22 Jun 2022Submission Checks Completed
26 Jun 2022Reviewer(s) Assigned
01 Jul 2022Review(s) Completed, Editorial Evaluation Pending
01 Jul 2022Editorial Decision: Revise Minor
06 Jul 20222nd Revision Received
07 Jul 2022Assigned to Editor
07 Jul 2022Submission Checks Completed
07 Jul 2022Review(s) Completed, Editorial Evaluation Pending
15 Jul 2022Editorial Decision: Accept
15 Aug 2022Published in Journal of the American Oil Chemists' Society. 10.1002/aocs.12640