The Collaborative International Dictionary of English v.0.48:

Maltonic \Mal*ton"ic\, a. (Chem.)
   Of, pertaining to, or derived from, maltose; specif.,
   designating an acid called also gluconic or dextronic
   acid. See Gluconic.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dextronic \Dex*tron"ic\, a. (Chem.)
   Pertaining to, or derived from, dextrose; as, dextronic acid.
   [1913 Webster]

   Dextronic acid, a sirupy substance obtained by the partial
      oxidation of various carbohydrates, as dextrose, etc.
      [1913 Webster]