Microalgae or microphytes are microscopic algae, often present in freshwater and marine systems, both in the living column and in the sediments. These are single-celled species that exist individually, or in chains or in groups. Depending on the species, their size can range from a few micrometers (μm) to a few hundred micrometers. Unlike higher plants, microalgae do not have roots, stems or leaves. They are specially adapted to an environment dominated by viscous forces. Microalgae, capable of photosynthesis, are important for life on earth; they produce about half of them
Microalgae have been explored for their promising applications with bioactive compounds including antibacterial, antiviral, antifungal and antialgal activities. Given the current state of use of therapeutic therapies and their limitations in combining their unwanted effects, the application of bioactive compounds to algae may prove beneficial and much more effective for emerging infectious diseases, infections viral (epidemic and pandemic) and the Increasing bacteria resistant to antibiotics, there is an urgent need to develop alternative therapies against infectious diseases. This work provides a brief introduction to bioactive algae compounds and their activities against various pathogens. Scholarly journal is a peer-reviewed journal in which a particular academic discipline is published. New research and criticism of research for the introduction and presentation of forums as scholarly journals serve. Content is usually in the form of presenting original research, review articles and book reviews. The term scholarly journal applies to all fields of scholarly publications; This article deals with aspects of all academic field journals. New research and criticism of research for the introduction and presentation of forums as scholarly journals serve. Content is usually in the form of presenting original research, review articles and book reviews. The term scholarly journal applies to all fields of scholarly publications;