Manufacture of algal chemicals. III. Laboratory‐scale isolation of laminarin from brown marine algae

Methods for the isolation of laminarin from the common brown algae indigenous to Great Britain have been worked out on the laboratory scale with a view to the ultimate development of a process suitable for large‐scale production. These methods comprise treating the fresh or dried milled weed with hydrochloric acid or sulphuric acid at pH 2·4 and isolating the laminarin from the acid extract.