Enzymatic Starch Modification via Drum Drying
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Solution Overview
Problem
Existing methods for enzymatic modification of starch require complex processes, elevated temperatures, and additional equipment, making them inefficient and time-consuming, particularly in achieving low viscosity and excellent cold water solubility.
Innovation Solution
A method involving preparing a starch suspension with water, applying it to a drum drying device without heating above 70°C, adding enzymes before or after application, and heating the suspension on the device to above 70°C, thereby simplifying the process and maintaining starch integrity until gelatinization and enzyme action occur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the suspension is heated above 70°C before applying to the drum drying device, then the starch gelatinization occurs more rapidly, but the starch grains are damaged and enzyme distribution becomes non-uniform
Solution Approach 1:
The starch suspension is prepared and applied to the drum drying device in advance, maintaining starch grain integrity at lower temperatures before gelatinization. The drum drying device then provides rapid heating to achieve gelatinization while preserving starch grain structure, and enzymes are added after cooling to ensure uniform distribution.
2Speed
If the suspension is heated above 70°C before applying to the drum drying device, then the gelatinization process is accelerated, but the process complexity and time increase
Solution Approach 1:
The drum drying device combines multiple functions into a single step: it rapidly heats the starch suspension to achieve gelatinization, then quickly cools it to preserve starch grain integrity. This eliminates the need for separate pre-heating and cooling steps, reducing overall process time while maintaining gelatinization speed.
3Duration of action of moving object
If enzymes are added before heating the suspension, then the enzymatic modification begins earlier, but the enzyme distribution becomes non-uniform and starch grains are damaged
Solution Approach 1:
The starch suspension is prepared and applied to the drum drying device before adding enzymes. The rapid heating and cooling process is completed first to gelatinize the starch while preserving grain integrity, creating an optimal substrate. Enzymes are then added to the cooled suspension, ensuring uniform distribution and preventing enzyme damage from high temperatures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach results in a straightforward, efficient production of enzymatically modified starch with low viscosity and high cold water solubility, avoiding extra steps and equipment, while ensuring intact starch grains and optimal enzyme distribution.
Implementation Method 1
the native starch grains are affected and the gelatinized starch is modified by the action of the at least enzyme
Implementation Method 2
drying the powder hydrolysate obtained in the step (2) by drum drying or spray drying
Data Source
AI summary
The present invention is directed to a method for enzymatic modification of starch, comprising the following steps: (a) preparing a suspension comprising starch and water; (b) applying the suspension to a drum of a drum drying device, wherein the suspension is not heated above 70 °C, in particular not above 60 °C before applying to the drum drying device; (c) adding at least one enzyme to the suspension before or after the suspension is applied to the drum drying device; (d) heating the suspension containing the at least one enzyme on the drum drying device to temperatures above 70 °C, in particular above 80 °C; (e) obtaining the enzymatically modified starch from the drum drying device. A further aspect of the invention is directed to the use of a drum drying device for the gelatinization of a suspension comprising native starch, water and at least one enzyme, wherein the suspension was not heated to a temperature above 70 °C, preferably not above 60 °C, in particular not above 50 °C before applying to the drum drying device.