Process for producing a syrup rich in maltose

摘要

Syrups rich in maltose are prepared from liquefied starches by saccharification with a maltogenic alpha -amylase followed by further saccharification in the presence of a beta -amylase and a debranching enzyme. Syrups rich in maltose are prepared by successive stages of: (i) liquefaction of a starch suspension; (ii) effecting saccharification of the liquefied starch in the presence of a maltogenic alpha -amylase; and (iii) continuing the saccharification of the liquefied starch in the presence of at least one beta -amylase and at least one debranching enzyme selected from pullulanases and isoamylases. Independent claims are also included for the following: (1) a process for producing maltose rich syrups by effecting saccharification of the liquefied starch in a single stage in the presence of a maltogenic alpha -amylase and at least one debranching enzyme selected from pullulanases and isoamylases; (2) a process comprising subjecting the maltose syrup to a supplementary stage of conversion of the glucose; and (3) a process for producing a syrup rich in maltitol by hydrogenation of the maltose syrup.