Abstract
The literature on cyclodextrins, which are a unique homologous series of carbohydrates, is rapidly increasing. This reviews the literature through 1973 on some intriguing properties of cyclodextrins. The contents are as follows: cyclodextrin forming enzyme, hydrolysis by enzyme and acid, preparation methods of r-dextrin and higher members of cyclodextrins, analytical methods of cyclodextrins, crystalline structures of cyclodexirins and their complexes (inclusion compounds), conformations in solution, formation of the complexes and effects induced on host and guest molecules, cyclodextrins as enzyme model, and selectively substituted derivative of cyclodextrins.