Hydrolysis of sucrose, raffinose, inulin and levan. Specific for the fructose moiety and the beta-anomeric configuration of the glycosidic linkages of its substrates. The enzyme released fructose from sucrose and raffinose, and the fructose polymer inulin is hydrolyzed quantitatively in an exo-type fashion. Hydrolysis of terminal non-reducing beta-D-fructofuranoside residues in beta-D-fructofuranosides. Optimum temperature is 90-95 degrees Celsius. Highly thermostable. Belongs to the glycosyl hydrolase 32 family.