Abstract
This study prepared osteogenic peptides (OPs) from cod meat by hydrolysis and subsequently encapsulated them in nanoliposomes (NLP) to enhance bioaccessibility. The characterization, stability, controlled release behavior and bioactivity of OPs-loaded nanoliposomes (OPs-NLP) were investigated as well. The highest loading capacity (27.32%) was achieved in NLP loaded with 6 mg/mL of OPs. The particle size, zeta potential, and encapsulation efficiency of OPs-NLP were 70.59 nm, −11.98 mV, and 75.24%, respectively. The interaction between OPs and empty NLP was through hydrogen bonding and hydrophobic. The OPs-NLP showed the greatest stability during storage at 4 °C. The in vitro release profile of OPs from OPs-NLP fitted a one-level kinetic model best. The osteogenic activity of OPs was unaffected by NLP encapsulation, and the bioaccessibility of OPs was notably improved. These findings suggest that OPs-NLP has the potential to be used in functional foods.
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