| 摘要 |
PURPOSE: Provided is a process for modifying starch and starch derivatives by branching enzymes, wherein the branching enzymes are continuously introduced into the reaction medium. CONSTITUTION: Process for modifying starch or starch derivatives by branching enzymes is characterized by consisting in continuously introducing the branching enzymes into the reaction medium containing starch or starch derivatives, wherein the starch or starch derivatives are heated so as to be in partially or completely gelatinized form; the continuous introduction of the branching enzymes into the reaction medium is carried out under conditions which limit the retrogradation of starch or of starch derivatives and the formation of structured amylose-lipid combinations; the branching enzymes are extracted from organisms and/or microorganisms selected from the group consisting of higher plants, yeasts, bacteria and unicellular algae. wherein the branching enzymes are selected from the group consisting of glycogen branching enzymes, starch branching enzymes, cyclomaltodextrin glucosyl transferases, transglucosidases and any mixtures of these enzymes; the starch is selected from the group consisting of maize, potato, wheat, pea, cassava and rice starches; and the starch derivatives are selected from the group consisting of the products of acid or enzymatic hydrolysis of starch, and also the products of the chemical and physical modifications of starch of any type.
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