Melezitose enzyme action

Fig. 4. —Action of cell-free, Proteus enzyme solution upon melezitose, initial concentration 20 mM. Solid circles represent sucrose open circles represent reducing sugars, calculated as glucose.

D-glucosidase of almond emulsin is without action on melezitose or turanose - Next there is the positive evidence that the enzyme a-D-glucosidase which is obtainable from yeast, malt, Aspergillus oryzae and some other organisms, hydrolyzes both turanose and melezitose, the latter to its three components. The action of enzymes thus discloses that both D-glucose units in melezitose are of the a-n-type, and melezitose becomes 3-[ a-o-glucopyrano3ylJ-D-fructofuranose < > a-n-glu-copyranose. 

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