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Microstructuring Process in Oleogels Formulated with Vegetable Oils and Monoglycerides: A Comparison of Non-Isothermal Nucleation Kinetics by Spectrophotometric and DSC Analysis
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  • Javier Isaac Contreras-Ramírez,
  • Esperanza Acosta-Gurrola,
  • Walfred Rosas-Flores,
  • Jose Alberto Gallegos-Infante,
  • Jorge Toro-Vazquez
Javier Isaac Contreras-Ramírez
Instituto Tecnológico de Durango

Corresponding Author:contreras.ibq@gmail.com

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Esperanza Acosta-Gurrola
Instituto Tecnológico de Durango
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Walfred Rosas-Flores
Instituto Tecnológico de Durango
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Jose Alberto Gallegos-Infante
TecNM/Instituto Tecnologico de Durango
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Jorge Toro-Vazquez
Universidad Autonoma de San Luis Potosi
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The initial oleogelation process (microstructuring) as well as the formulation are determinant to obtain the desired characteristics in oleogels with potential application in the industry. The microstructuring process in oleogels has been extensively studied by means of techniques highly sensitive to thermal variations, such as differential scanning calorimetry (DSC). However, there are other readily available techniques and equipment that can be employed to perform similar evaluations. Non-isothermal nucleation kinetics by spectrophotometric methods can be used as alternatives to basic crystallization studies in oleogels. Therefore, in this research a comparison of both techniques is presented, highlighting their similarities, advantages and limitations, in the study of the microstructure of oleogels. Oleogels were obtained with a minimum concentration of gelator and another saturated one, using vegetable oils of different degrees of saturation. The crystallization profiles of the oleogels were obtained by DSC, a non-isothermal nucleation kinetics was performed from the molten system and the final microstructure was evaluated by optical microscopy. The Fisher-Turnbull and Avrami model was used to evaluate the behavior during microstructuring. A gap was observed during the crystallization process by DSC which can be evaluated by spectrophotometry. Differences in the microstructuring process were found in both methods due to the temperature ramp used and formulation variables. The results obtained by spectrophotometry indicate that it can be a good alternative, easily accessible in oleogel crystallization studies, when high sensitivity or very specific thermal parameters are not required.
28 Jun 2022Submitted to Journal of the American Oil Chemists' Society
28 Jun 2022Submission Checks Completed
28 Jun 2022Assigned to Editor
07 Jul 2022Reviewer(s) Assigned
18 Oct 2022Review(s) Completed, Editorial Evaluation Pending
21 Oct 2022Editorial Decision: Revise Major
30 Dec 20221st Revision Received
02 Jan 2023Submission Checks Completed
02 Jan 2023Assigned to Editor
02 Jan 2023Review(s) Completed, Editorial Evaluation Pending
11 Jan 2023Reviewer(s) Assigned
06 Feb 2023Editorial Decision: Accept