PROCESS FOR PRODUCING DIFRUCTOSE DIANHYDRIDE III CRYSTALS

摘要

2,; DFA III, that is, 1,2 ''; 2,3'' two fructose molecules joined together in the (di -D- fructose furanyl North 1,2 '': The present invention looks deep monohydrate dianhydride III 3 ''dianhydride) a solution containing disaccharides lead is hardly decomposed containing 5 or more, preferably DFA III crystal characterized in that having a pH value of 6 to 8, 5 to 8, more preferably of It provides a method of manufacturing. According to the manufacturing method, DFA III is even in the case where crystallization is performed in the circulation system can be produced on a commercial scale without a decrease in the crystallization rate. In this case, (crude -) if the total fructose content is not more than 5% based on solids in the crystallization mother liquor, the fructose content of 1% or less, the effect is further improved.