**Preface to "Marine Bioactive Peptides—Structure, Function, and Application"**

Marine organisms live in harsh marine habitats, causing them to possess significantly different and more diverse proteins than those of terrestrial organisms. The unique amino acid sequences hidden in marine proteins can be released via proteolytic hydrolysis and present a variety of biological activities, which provide multiple benefits to human health. Recently, diverse bioactive peptides have been prepared from marine organisms and their processed byproducts. Beyond their important nutritional benefits, bioactive peptides have shown remarkable bioactivities and pharmacological functions, including antioxidant, anti-inflammatory, cytotoxic, neurotoxic, antiphotoaging, anticoagulant, antidiabetic, antifreeze, endotoxin-binding, lipid-lowering and immune-modulating. These functions make marine peptides an attractive molecular basis for the design of innovative hepatoprotective drugs, anti-aging drugs, immune-enhancing products, hypolipidemic drugs, antiphotoaging skin care products, etc. Therefore, marine-derived bioactive peptides are drawing great attention from consumers and researchers due to their possibilities for being applied in functional foods and medicines.

This Special Issue "Marine Bioactive Peptides—Structure, Function and Application" aims to collect papers on up-to-date information regarding the preparation, structural identification, activity, functional evaluation and application of marine bioactive peptides.

> **Chang-Feng Chi and Bin Wang** *Editors*
