Foods that contain components known for their health-promoting qualities, beyond just their nutritional value, are called functional foods. These particular components are referred to as functional food ingredients. Mainly, the bioactive peptides purified from food materials, including animal, plant, sea foods, and algal sources, have been identified as such functional food ingredients. In this review, we discuss the purification process of bioactive peptides from seafoods, and algal sources, and their processing by-products. Additionally, we highlight the technologies currently used to purify bioactive peptides from sea-foods, and algal, including modern computational techniques like insilico methodology or bioinformatics as well as and methods to enhance the purification process. These techniques can be applied in the future to purify bioactive peptides in order to boost the efficacy of bioactive peptide purification. Furthermore, we summarize the bio-functional activities of bioactive peptides from sea-foods, and algal, which help to protect the body against various diseases, thereby proving their potential to be functional food ingredients. Several marine species and algal resources have been studied regarding their potential as a source of bioactive compounds. In this review we have explored the high potential of marine derived bioactive peptides resulting from several marine sources, showing the numerous properties described and their potential applications as active ingredients for pharmaceutical, food, nutraceutical and cosmetic industries. Furthermore, we have also explored important topics to allow a deeper understanding on peptide applications, such as bioavailability and concerns. Therefore, further research in bioactive peptides application in final products is necessary to better understand their behavior, potential and also consumer acceptance. With increased life expectancy, our diet will play a key role in sustaining human health. This is a challenge for the food industry as consumers not only demand tasty and convenient food, but also healthy, nutritious food Marine nutraceuticals are both a coherent and attractive option for the food industry as there are a multitude of functional food ingredients that can be derived from marine sources. It is also believed that, as people become increasingly aware of the association between diet and good health, the consumption of fishery products will most likely increase Moreover, in relation to marine algae, their content in proteins, carbohydrates, lipids, fiber, metabolites, etc. can be influenced by their growing parameters.
