Dear Colleagues,

Oceans cover > 70% of the Earth’s surface and are a habitat for an immense variety of marine organisms. These species produce a high number of natural products, many of which exhibit important bioactivities compared to or even higher than those of terrestrial organisms. Moreover, marine organisms are often exposed to environmental stresses and extreme conditions that force them to produce protective mechanisms such as secondary metabolites and macromolecules possessing antioxidant activity. Thus, various antioxidant compounds, such as peptides, phenols, polysaccharides, carotenoids, terpenoids, polyketides, alkaloids, sterols, pigments, carbohydrates and polyunsaturated fatty acids, have been identified in a variety of marine organisms (e.g., seaweeds, microalgae, sponges, ascidians, bacteria, fungi and bryozoan). However, marine biota constitute an underexplored rich source of high-value molecules with beneficial effects for human health, and so there has been great research interest in discovering new bioactive compounds. In this Special Issue, we invite researchers to submit their latest research findings or original review articles which will bring together current research and highlight the newest data and critical discussions on the following subjects: the isolation and potency assessment of marine organisms’ antioxidant compounds (i.e., individual substances or chemical mixtures), the production of synthetic analogues based on antioxidant substances of marine origin, the role of marine organisms’ compounds in preventing oxidative stress-induced diseases and the investigation of the molecular mechanisms accounting for marine compounds’ antioxidant activity.

Dr. Dimitrios Stagos
Dr. Varvara Trachana
Dr. Nikolaos Goutzourelas
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Antioxidants is an international peer-reviewed open access monthly journal published by MDPI.

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• antioxidants
• marine organisms
• natural compounds
• oxidative stress
• chemoprevention
• chemical synthesis
• extraction