Advanced search
2 files | 1.98 MB

Evaluating the oil-gelling properties of natural waxes in rice bran oil : rheological, thermal, and microstructural study

Diem Chi Doan (UGent) , Davy Van de Walle (UGent) , Koen Dewettinck (UGent) and Ashok Patel (UGent)
Author
Organization
Abstract
The main objective of this research was to enhance the understanding of the oil-structuring properties of natural waxes. A number of natural food-grade waxes were evaluated for their oil-gelling properties using a combination of techniques, including rheology, differential scanning calorimetry, and polarized light microscopy. Based on the rheological measurements (oscillatory, flow, and thixotropic behavior), we found that rice bran wax, carnauba Brazilian wax and fruit wax showed weak gelling behavior in rice bran oil (prepared at concentrations as high as 5 % w/w), exhibiting relative low elastic moduli that displayed a high frequency dependency. On the contrary, carnauba wild wax, berry wax, candelilla wax, beeswax, and sunflower wax were efficient oleogelators forming strong gels at concentration of <2 % w/w. We attempt to explain these observed differences in gelling behavior by crystal morphology, network formation, and the final amount of crystalline phase.
Keywords
STABILITY, ORGANOGELS, EDIBLE OILS, ACID, Oleogelation, BEESWAX, Waxes, Rice bran oil, Rheology, Microscopy, SHELLAC OLEOGELS, CANDELILLA WAX, SAFFLOWER OIL, ALCOHOLS, NETWORKS

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 347.33 KB
  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 1.63 MB

Citation

Please use this url to cite or link to this publication:

Chicago
Doan, Diem Chi, Davy Van de Walle, Koen Dewettinck, and Ashok Patel. 2015. “Evaluating the Oil-gelling Properties of Natural Waxes in Rice Bran Oil : Rheological, Thermal, and Microstructural Study.” Journal of the American Oil Chemists Society 92 (6): 801–811.
APA
Doan, D. C., Van de Walle, D., Dewettinck, K., & Patel, A. (2015). Evaluating the oil-gelling properties of natural waxes in rice bran oil : rheological, thermal, and microstructural study. JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, 92(6), 801–811.
Vancouver
1.
Doan DC, Van de Walle D, Dewettinck K, Patel A. Evaluating the oil-gelling properties of natural waxes in rice bran oil : rheological, thermal, and microstructural study. JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY. 2015;92(6):801–11.
MLA
Doan, Diem Chi, Davy Van de Walle, Koen Dewettinck, et al. “Evaluating the Oil-gelling Properties of Natural Waxes in Rice Bran Oil : Rheological, Thermal, and Microstructural Study.” JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY 92.6 (2015): 801–811. Print.
@article{5964188,
  abstract     = {The main objective of this research was to enhance the understanding of the oil-structuring properties of natural waxes. A number of natural food-grade waxes were evaluated for their oil-gelling properties using a combination of techniques, including rheology, differential scanning calorimetry, and polarized light microscopy. Based on the rheological measurements (oscillatory, flow, and thixotropic behavior), we found that rice bran wax, carnauba Brazilian wax and fruit wax showed weak gelling behavior in rice bran oil (prepared at concentrations as high as 5 \% w/w), exhibiting relative low elastic moduli that displayed a high frequency dependency. On the contrary, carnauba wild wax, berry wax, candelilla wax, beeswax, and sunflower wax were efficient oleogelators forming strong gels at concentration of {\textlangle}2 \% w/w. We attempt to explain these observed differences in gelling behavior by crystal morphology, network formation, and the final amount of crystalline phase.},
  author       = {Doan, Diem Chi and Van de Walle, Davy and Dewettinck, Koen and Patel, Ashok},
  issn         = {0003-021X},
  journal      = {JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY},
  keyword      = {STABILITY,ORGANOGELS,EDIBLE OILS,ACID,Oleogelation,BEESWAX,Waxes,Rice bran oil,Rheology,Microscopy,SHELLAC OLEOGELS,CANDELILLA WAX,SAFFLOWER OIL,ALCOHOLS,NETWORKS},
  language     = {eng},
  number       = {6},
  pages        = {801--811},
  title        = {Evaluating the oil-gelling properties of natural waxes in rice bran oil : rheological, thermal, and microstructural study},
  url          = {http://dx.doi.org/10.1007/s11746-015-2645-0},
  volume       = {92},
  year         = {2015},
}

Altmetric
View in Altmetric
Web of Science
Times cited: