Laminarin (also known as laminaran) is a storage glucan (a polysaccharide of glucose) of brown algae. A glucan molecule is a Polysaccharide of D- Glucose monomers linked by glycosidic bonds. Polysaccharides are relatively complex Carbohydrates They are Polymers made up of many Monosaccharides joined together by Glycosidic bonds Glucose (Glc a Monosaccharide (or simple Sugar) also known as grape sugar, is an important Carbohydrate in Biology. The Phaeophyceae or brown algae, (singular alga is a large group of mostly marine multicellular Algae including many Seaweeds of colder It is created by photosynthesis and is made up of β(1→3)-glucan with β(1→6)-linkages. Photosynthesis is a Metabolic pathway that converts Light Energy into Chemical energy. It is a linear polysaccharide, with a β(1→3):β(1→6) ratio of 3:1. [1]