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Stabilizing the Oil-in-Water Emulsions Using the Mixtures of Dendrobium Officinale Polysaccharides and Gum Arabic or Propylene Glycol Alginate

by Bo Wang 1, Haiyan Tian 1 and Dong Xiang 1,2,*
1
College of Food Science and Engineering, Hainan University, Haikou 570228, China
2
Engineering Research Center of Utilization of Tropical polysaccharide resources, Ministry of Education, Haikou 570228, China
*
Author to whom correspondence should be addressed.
Molecules 2020, 25(3), 759; https://doi.org/10.3390/molecules25030759
Received: 17 January 2020 / Revised: 5 February 2020 / Accepted: 7 February 2020 / Published: 10 February 2020
Coconut oil-in-water emulsions were prepared using three polysaccharides: Dendrobium officinale polysaccharide (DOP), propylene glycol alginate (PGA), gum arabic (GA) and their polysaccharide complexes as emulsifiers. The effects of the ratio of the compounded polysaccharides on their apparent viscosity and interfacial activity were explored in this study. The average particle size, zeta potential, microstructure, rheological properties, and physical stability of the emulsions prepared with different compound-polysaccharides were studied. The results showed that mainly DOP contributed to the apparent viscosity of the compound-polysaccharide, while the interfacial activity and zeta potential were mainly influenced by PGA or GA. Emulsions prepared with compound-polysaccharides exhibited smaller average particle sizes, and microscopic observations showed smaller droplets and less droplet aggregation. In addition, the stability analysis of emulsions by a dispersion analyzer LUMiSizer showed that the emulsion prepared by compounding polysaccharides had better physical stability. Finally, all of the above experimental results showed that the emulsions prepared by PGA:DOP = 2:8 (total concentration = 1.5 wt%) and 2.0% GA + 1.5% DOP were the most stable. View Full-Text
Keywords: Dendrobium officinale polysaccharides; propylene glycol alginate; gum arabic; coconut oil-in-water emulsion Dendrobium officinale polysaccharides; propylene glycol alginate; gum arabic; coconut oil-in-water emulsion
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MDPI and ACS Style

Wang, B.; Tian, H.; Xiang, D. Stabilizing the Oil-in-Water Emulsions Using the Mixtures of Dendrobium Officinale Polysaccharides and Gum Arabic or Propylene Glycol Alginate. Molecules 2020, 25, 759.

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