Journal
CARBOHYDRATE POLYMERS
Volume 249, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.116843
Keywords
Gum arabic; Emulsion; SEC-MALLS; C-13 CP/MAS NMR; SAXS; Dynamic interfacial tension; Dodecane; Colza oil
Categories
Funding
- Adaptable and Seamless Technology transfer Program through Target-driven R&D (A-STEP), Japan Science and Technology Agency (JST)
- JSPS KAKENHI from the Japan Society for the Promotion of Science [JP18K18188]
Ask authors/readers for more resources
Gum arabic (GA), an arabinogalactan-based gum, is a well-known powerful emulsifier. However, the poor stability of emulsion has often been pointed out. In order to clarify the origin, the structure-property relationship of GA, especially the interfacial property at oil/water interface, needs to be investigated. Here, we tried to correlate the primary structure with interfacial property at oil/water interface. A series of structural analyses by SEC-MALLS, SAXS, etc. showed that the primary structure of GA was a disk-like star shaped nanoparticle. The dynamic interfacial tension measurement showed that GA molecules adsorb onto oil surface in 2 steps: Firstly, the micron-aggregates of GA approach onto the oil surface, and then the aggregates are dissociated into nanoparticles so that they cover the oil surface. Therefore, the emulsification and emulsion stability are controlled not by the property of the primary structure of GA but by the higher-order molecular network structure made of GA molecules.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available