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Names | |
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Other names
Lichenan; Moss starch
| |
Identifiers | |
ChEBI | |
ChemSpider |
|
ECHA InfoCard | 100.014.323 |
PubChem
CID
|
|
UNII | |
CompTox Dashboard (
EPA)
|
|
Properties | |
(C6H10O5)x | |
Molar mass | Variable |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
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). [1] It has been studied since about 1957. [2]
Chemically, lichenin is a mixed-linkage glucan, consisting of repeating glucose units linked by β-1,3 and β-1,4 glycosidic bonds. [1]
It is an important carbohydrate for reindeers and northern flying squirrels, which eat the lichen Bryoria fremontii.
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. [3]
In his 1960 novel Trouble with Lichen, John Wyndham gives the name Lichenin to a biochemical extract of lichen used to extend life expectancy beyond 300 years.
![]() | |
Names | |
---|---|
Other names
Lichenan; Moss starch
| |
Identifiers | |
ChEBI | |
ChemSpider |
|
ECHA InfoCard | 100.014.323 |
PubChem
CID
|
|
UNII | |
CompTox Dashboard (
EPA)
|
|
Properties | |
(C6H10O5)x | |
Molar mass | Variable |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
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). [1] It has been studied since about 1957. [2]
Chemically, lichenin is a mixed-linkage glucan, consisting of repeating glucose units linked by β-1,3 and β-1,4 glycosidic bonds. [1]
It is an important carbohydrate for reindeers and northern flying squirrels, which eat the lichen Bryoria fremontii.
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. [3]
In his 1960 novel Trouble with Lichen, John Wyndham gives the name Lichenin to a biochemical extract of lichen used to extend life expectancy beyond 300 years.