Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 139, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.lwt.2020.110571
Keywords
Liposome; Gum Arabic; Sodium alginate; Curcumin; Physical stability
Categories
Funding
- National Key Research and Development Program of China [2018YFD0400303]
- National Natural Science Foundation for the Youth of China [31801483]
- ARC DECRA Fellowship [DE160101281]
- RMIT Vice Chancellor's Senior Research Fellowship
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Natural biopolymers like food gums can enhance the physical stability of colloidal particle dispersions. The study found that while adding GA resulted in smaller liposome sizes, it also disrupted the internal structure leading to increased flocculation and poor retention. On the other hand, adding SA formed a viscous continuous phase, reducing particle sedimentation but increasing particle size and polydispersity.
Natural biopolymers such as food gums can be effective in improving the physical stability of colloidal particle dispersions. To improve the loading stability of curcumin in liposomes, liposomes with gum arabic (GA) or sodium alginate (SA) (0-2% w/v) were prepared and their physicochemical properties evaluated. Results showed that GA, which has a high surface activity, interacted more with the liposome surface resulting in smaller liposome size and polydispersity. However GA disrupted the internal lamellar structure of the liposomes at low concentrations, resulting in increased flocculation and was associated with poor retention of encapsulated curcumin. In contrast, SA formed a viscious continuous phase due to the gum network which reduced particle mobility and sedimentation, and increased curcumin retention, although this was associated with an increase in particle size and polydispersity index.
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