Lichenan; Moss starch
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Lichenin, also known as lichenan or moss starch, is a complex glucan occurring in certain species of lichens. It can be extracted from Cetraria islandica (Iceland moss). It has been studied since about 1957. Chemically, lichenin consists of repeating glucose units linked by β-1,3 and β-1,4 glycosidic bonds.
It can be extracted by digesting Iceland moss in a cold, weak solution of carbonate of soda for some time, and then boiling. By this process the lichenin is dissolved and on cooling separates as a colorless jelly. Iodine imparts no color to it.
Other uses of the name
- Perlin, A. S.; Suzuki, S. (1962). "The Structure of Lichenin: Selective Enzymolysis Studies". Canadian Journal of Chemistry. Canada: National Research Council of Canada. 40 (1): 50–56. doi:10.1139/v62-009.
- Cunningham, WL; Manners, DJ (March 1964). "Studies on carbohydrate-metabolizing enzymes. 11. The hydrolysis of lichenin by enzyme preparations from malted barley and Rhizopus arrhizus". The Biochemical Journal. England: Portland Press on behalf of the Biochemical Society. 90 (3): 596–602. doi:10.1042/bj0900596. ISSN 0264-6021. PMC . PMID 5833367.
- This article incorporates text from a publication now in the public domain: Gilman, D. C.; Thurston, H. T.; Colby, F. M., eds. (1905). "Lichenin". New International Encyclopedia (1st ed.). New York: Dodd, Mead.
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