Nanoencapsulation of white shrimp peptides in liposomes: Characterization, stability, and influence on bioactive properties

Oxidation-resistant nanoliposomes loaded with osteogenic peptides: Characteristics, stability and bioaccessibility

Phosphatidylcholine (PC) oxidation leads to the fusion of nanoliposomes and leakage of containment compounds during the storage period. This study aims to improve the oxidation resistance by partially substituting PC in the osteogenic peptides (OPs) loaded nanoliposomes with hydrogenated phosphatidylcholine (HPC). The investigation assessed the characteristics, stability, and bioaccessibility of these novel nanoliposomes. By altering the PC/HPC mass ratio from 1:0 to 0:1, an increase in the encapsulation efficiency (EE), loading capacity (LC), polydispersity index (PDI), and bioaccessibility of OPs-loaded nanoliposomes was observed. Additionally, there was a decrease in thiobarbituric acid reactive substances (TBARS), peroxide value (POV), non-volatile aldehyde, and ketone. The stability of salt decreased when using HPC alone (0:1). The performance of OPs-loaded nanoliposomes with a PC/HPC mass ratio of 1:3 was found to be satisfactory in terms of storage and pH stability. Fluorescence spectroscopy, Differential Scanning Calorimetry (DSC) and Fourier Transform Infrared spectroscopy (FTIR) revealed a tighter lipid aggregation, enhanced intermolecular van der Waals forces, and hydrogen bond formation in membranes of nanoliposomes containing HPC. The addition of HPC to the nanoliposomes delayed the release of peptides in simulated without affecting osteogenic activity. These results provide guidance for the development of oxidation-resistant nanoliposomes loaded with OPs products.

Shellfish industrial waste reuse

The global production of aquatic organisms has grown steadily in recent decades. This increase in production results in high volumes of by-products and waste, generally considered to be of low commercial value and part of them are consequently discarded in landfills or in the sea, causing serious environmental problems when not used. Currently, a large part of the reused aquaculture waste is destined for the feed industry. This generally undervalued waste presents an important source of bioactive compounds in its composition, such as: amino acids, carotenoids, chitin and its derivatives, fatty acids and minerals. These compounds are capable of offering numerous benefits due to their bioactive properties. However, the applicability of these compounds may be opportune in several other sectors. This review describes studies that seek to obtain and apply bioactive compounds from different sources of aquaculture waste, thus adding commercial value to these underutilized biomasses.HIGHLIGHTSVolume of aquaculture industrial waste from crustaceans and mollusks.Quantity and quality of bioactive components in aquaculture waste.Applications of recovered proteins, lipids, chitin, carotenoids and minerals.Future prospects for the destination of aquaculture waste.