Article
Article
Cycloamylose
Article By:
Bender, Myron L. Formerly, Department of Chemistry, Northwestern University, Evanston, Illinois.
Last reviewed:January 2020
DOI:https://doi.org/10.1036/1097-8542.176050
Any of a group of cyclic oligomers of glucose in the normal C-1 conformation in which the individual glucose units are connected by 1,4 bonds. They are called Schardinger dextrins (after the discoverer), cyclodextrins (to emphasize their cyclic character), or cycloamyloses (to emphasize both their cyclic character and their amylose origin). The most common ones are cyclohexaamylose (with six glucose units in a cyclic array) and cycloheptaamylose (with seven glucose units in a cyclic array). The toroidal shape of these molecules has been determined by x-ray analysis (Fig. 1). The molecular weights are around 1000.
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