Reaction catalyzed by D-xylulose reductase (1.1.1.9), L-arabinitol 4-dehydrogenase (1.1.1.12), L-iditol 2-dehydrogenase (1.1.1.14), D-iditol 2-dehydrogenase (1.1.1.15)
+
NAD+
=
+
NADH
+
D-sorbitol
+
NAD+
=
D-fructose
+
NADH
+
H+
