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Article Abstract

Poor solubility and bioavailability have limited the application of fucoxanthin in drug and functional food processing. In order to encapsulate fucoxanthin in delivery systems, in this study, cellulose was isolated from industrial brown algae residues and high-pressure homogenized into cellulose nanofibrils (CNFs). Then, fucoxanthin was encapsulated into the Pickering emulsion stabilized by the CNFs. The effect of high-pressure homogenization on the characteristics of cellulose and the stability of fucoxanthin emulsion was evaluated. The results indicated that CNFs prepared at 105 MPa had a diameter of 87 nm and exhibited high zeta potential and thermal stability. Encapsulation efficiency peaked at 70.8% with 1.0 mg/mL fucoxanthin, and after three freeze-thaw cycles the encapsulation efficiency was higher than 60%. The DPPH scavenging activity after 12 days' storage at 4 °C was still 42%. Furthermore, the Pickering emulsion with 1.0 mg/mL fucoxanthin showed high stability and antioxidant activity under different pH values, salinity, temperature, and UV light exposure duration. The CNFs effectively protected fucoxanthin from degradation, offering a novel delivery system for marine bioactive compounds. To the best of our knowledge, this is the first study on the fucoxanthin delivery system of Pickering emulsion stabilized by the CNFs. Such emulsion might benefit the encapsulation and release of bioactive components in marine drugs.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12387411PMC
http://dx.doi.org/10.3390/md23080311DOI Listing

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