Therefore, by isomerization, D-glucose, D-mannose, and D-fructose can be interconverted. Isomerization can be catalyzed by either a base or an enzyme.

• 因此通过异构化,D-葡萄糖、D-甘露糖和D-果糖能相互转化,异构化作用可被碱或酶催化。