期刊
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
卷 96, 期 7, 页码 795-803出版社
WILEY
DOI: 10.1002/aocs.12248
关键词
Gum tragacanth; Emulsion stability; Rheological properties
资金
- Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran [1396/64123]
- Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences
Different emulsions based on six types of vegetable oils (sunflower, canola, sesame, olive, coconut, and palm olein) were studied to investigate the role of the oil phase in the stability and physicochemical characteristics of oil-in-water emulsions prepared with gum tragacanth. The results indicated that the stability, rheological parameters, and size distribution of emulsions were dependent on the oil type. Based on the interfacial tension value, the type of oil did not have a significant effect on the gum tragacanth-emulsifying properties. The formulation based on sunflower and coconut oil led to producing more stable emulsion and a sample containing palm olein resulted in an unstable emulsion. Rheological analysis revealed that the sample based on palm olein showed the lowest consistency coefficient (2.10 +/- 0.05 Pas(n)), elastic modulus (3.90 +/- 0.21 Pa), and energy of cohesion (80.87 +/- 1.1 J m(-3)). This study revealed that using oils with lower viscosity and higher density led to the higher stability of the emulsion samples.
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