摘要：

starch, whereupon a conversion to cyclodextrin occurs byenzymolysis. Procedures for making and isolating the cyThis application describes cyclodextrin derivatives hav clodextrins have been variously described as by F. Cr-amer ing ether substituents of the anionic type. These deriva tives form anionic salts with many diiferent cations. Alsoand D. Steinle, Ann, 595, 81 (1955). If desired, thevarious homologs such as, for example, the alpha, beta, covered are methods for perparing the derivatives. The and gama, may be fractionated by procedures such as derivatives are useful in ?occulation applications, in paper those described by D. French et al., J. Am. Chem. Soc., ?nishing, and as binders. clathrating materials.Theyarealsocomplexingor

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