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Vegetable and Mineral Oil Oleogels Developed at different Monoglyceride to Lecithin Molar Ratios
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  • Jorge Toro-Vazquez,
  • Maria Bello-Santillán,
  • Anaid de la Peña-Gil,
  • Mayra Aguilar-Zárate,
  • Miriam Charo-Alonso
Jorge Toro-Vazquez
Universidad Autonoma de San Luis Potosi

Corresponding Author:toro@uaslp.mx

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Maria Bello-Santillán
Universidad Autonoma de San Luis Potosi
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Anaid de la Peña-Gil
Universidad Autonoma de San Luis Potosi
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Mayra Aguilar-Zárate
Universidad Autonoma de San Luis Potosi
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Miriam Charo-Alonso
Universidad Autonoma de San Luis Potosi
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Abstract

We studied the thermomechanical and microstructural properties of oleogels developed with 2.1 to 15.7 Moles of monoglycerides/Mole of lecithin (MG/LC). The oleogels were developed (15°C) in vegetable (VO) and mineral (MO) oils using at each MG/LC 2% or 4% total mass of gelator. During oleogelation a synergistic MG-LC interaction existed deriving in the development of MG-LC cocrystals even below the gelators’ minimum gelling concentration. The cocrystals delayed the Lα→β polymorphic transition and worked as an active filler of the oleogels’ crystal network. In the VO, the oil with the highest relative polarity, the oleogels were structured by a network of β crystals where the cocrystals acted as an active filler. In the MO, the oil with the lowest relative polarity, the cocrystals’ development was favored while the Lα→β transition occurred just in the 15.7 MG/LC oleogels. Then, at all MG/LC the VO oleogels with 2% or 4% total gelator concentration achieved higher G’ than MO oleogels. However, the presence of β crystals will produce deleterious effects in shorter time in the VO oleogels than in the MO oleogels. In both oils the oleogels with the highest G’ and gel-like rheological behavior were achieved at 8.1 MG/LC, particularly at 4% total gelator concentration. Under these conditions the β polymorph was limited developed in the VO oleogels and completely absent in the MO oleogels. Then, we might tailoring the rheology of MG-LC oleogels with storage stability using as design variables the MG/LC, the total gelator concentration, and the polarity of the oil.
05 Jan 2022Submitted to Journal of the American Oil Chemists' Society
05 Jan 2022Submission Checks Completed
05 Jan 2022Assigned to Editor
21 Jan 2022Reviewer(s) Assigned
17 Feb 2022Review(s) Completed, Editorial Evaluation Pending
14 Mar 2022Editorial Decision: Revise Minor
11 Apr 20221st Revision Received
11 Apr 2022Submission Checks Completed
11 Apr 2022Assigned to Editor
12 Apr 2022Reviewer(s) Assigned
01 May 2022Review(s) Completed, Editorial Evaluation Pending
06 May 2022Editorial Decision: Accept
Nov 2022Published in Journal of the American Oil Chemists' Society volume 99 issue 11 on pages 951-969. 10.1002/aocs.12599