Journal
JOURNAL OF MICROENCAPSULATION
Volume 36, Issue 7, Pages 622-634Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02652048.2019.1662122
Keywords
Soy protein; pectin; phenolic acids; ternary complexes; emulsion
Funding
- National Natural Science Foundation of China [31601415]
- National Natural Science Foundation of Guangdong, China [2016A030307022]
- Characteristic innovation project of Higher Education of Guangdong, China [2016KTSCX082]
- Major Programme of Lingnan Normal University [LZL1501]
- Climbing Peak Programme of Guangdong, China [pdjh2019b0300]
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Aim: To design novel emulsifiers with the ability to improve the storage and digestion stability of curcumin emulsions, besides to investigate the influence of phenolic acids types on the emulsify ability of soy protein-pectin-phenolic acids complexes obtained by ultrasonication. Methods: The ternary complexes were characterised by particle size, morphology, zeta potential, X-ray diffraction, Fourier transform infra-red and fluorescence spectroscopy. Additionally, changes in droplet size, charge, and microstructure were monitored as quantitative stability index of curcumin emulsions. Results: Phenolic acid types significantly affected the formation of ternary complexes. Soy protein-pectin-ferulic acid complex (S-P-F) stabilised curcumin emulsion had the best emulsifying property, followed by soy protein-pectin- ellagic acid (S-P-E), and soy protein-pectin-tannic acid complexes (S-P-T). Moreover, S-P-F emulsion was found to retain efficiently cucumin within 30 days storage (77.35%) and simulated gastrointestinal tract (64.09%). Conclusion: Protein-polysaccharide-phenolic acids emulsions are effective oral delivery systems for hydrophobic bioactives.
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