3D model (JSmol)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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The molecule laminarin (also known as laminaran) is a storage glucan (a polysaccharide of glucose) found in brown algae . These energy reserve polysaccharides are present in reserve vacuoles inside the macroalgal cell and may constitute up to 35% of the dried weight of the macroalgal biomass.
Chemically laminarin is described as 1,3-linked β-d-glucose residues with different degrees of branching at β-(1,6) that influences the water solubility of the molecules. This chemical structure may vary in its degree of branching and polymerization and in the ratio of (1,3)- and (1,6)-glycosidic bonds.
It is used as a carbohydrate food reserve in the same way that chrysolaminarin is used by phytoplankton, especially in diatoms. It is created by photosynthesis and is made up of β(1→3)-glucan with β(1→6)-branches. It is a linear polysaccharide, with a β(1→3):β(1→6) ratio of 3:1. Its hydrolysis is catalyzed by enzymes such as laminarinase (EC 220.127.116.11) that breaks the β(1→3) bonds.
- "Polysaccharides from macroalgae: Recent advances, innovative technologies and challenges in extraction and purification". Food Research International. 99: 1011–1020. 2017-09-01. doi:10.1016/j.foodres.2016.11.016. ISSN 0963-9969.
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