| 摘要 |
1,139,110. Preparation of alkali-stable glycoside products. CORN PRODUCTS CO. 22 Dec., 1967 [23 Dec., 1966], No. 58543/67. Heading C2C. [Also in Division C3] Alkali-stable alkyl and hydroxyalkyl glycosides are prepared by heating a solution of a crude alkali-labile alkyl or hydroxyalkyl glucoside with an alkaline reagent, to substantially reduce or destroy residual reducing sugar in the crude glycoside. Suitable alkaline reagents include alkali metal and alkaline earth metal hydroxides and methylates and strong amine bases. Examples treat methyl and ethyl glucoside and ethyl maltoside. Further decolourization may be effected with carbon or H 2 O 2 / NH 4 OH treatment. |
