“…Marine macroalgae (seaweeds) are a diverse group of organisms that play a vital role in the productivity, structure, and function of coastal ecosystems (Dawes and Mathiesen, 2008). They are considered as a good source of vitamins, fibers, proteins, polyunsaturated fatty acids and other important secondary metabolites that are used in traditional medicine applications (Cho et al, 2011 andAli et al, 2017).These metabolites are of potential pharmaceutical value with antibacterial, antiviral, antifungal, anticancer, anticonvulsant and antioxidant activities (Yuan et al, 2005;Zubia et al, 2007;Baleta et al, 2017;Rajkumar et al 2018;Yende et al, 2018;Maddah et al, 2019;Madkour et al, 2019;Saber, 2019 andSujatha et al, 2019). They are used as bio-fertilizers (Hashem et al, 2019), as biofuel, human food, animal fodder and used for hydrocolloid production (Bruton et al, 2009).…”