Debranching Enzyme Modified Starch for Hard Capsule Film Strength
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Solution Overview
Problem
Natural and chemically modified starches used in capsule manufacturing often exhibit high viscosity and insufficient strength, limiting their application in hard empty capsules and other packaging materials.
Innovation Solution
Treating starch with debranching enzymes like isoamylase and pullulanase to reduce the degree of branching, resulting in modified starch with enhanced gelation ability and film strength suitable for hard empty capsules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If natural starch or chemically modified starch is used for capsule manufacturing, then the material is inexpensive and safe, but the gel viscosity is high and strength is insufficient
Solution Approach 1:
The patent applies parameter changes by modifying the starch molecular structure through enzymatic debranching. The debranching enzyme reduces the degree of branching in starch molecules, transforming the physical and chemical parameters of the starch to achieve lower viscosity and higher strength in the resulting capsule material.
Solution Approach 2:
The patent replaces chemical modification methods with enzymatic modification. Instead of using chemical reagents to modify starch, the invention uses debranching enzymes (such as isoamylase or pullulanase) to catalyze the removal of branch chains from starch molecules, providing a milder and more selective modification approach.
2Strength
If starch is treated with debranching enzyme to reduce degree of branching, then gelation ability and film strength are enhanced, but additional processing steps are required
Solution Approach 1:
The patent introduces debranching enzyme as an intermediary substance to facilitate the modification of starch. The enzyme acts as a biological catalyst that selectively removes branch chains from starch molecules, enabling controlled structural modification without requiring complex chemical reagents or multi-step processing procedures.
Solution Approach 2:
The enzymatic treatment changes key parameters of the starch including degree of branching, viscosity, and gelation properties. By controlling the enzyme concentration, temperature, and treatment time, the patent optimizes these parameters to achieve the desired balance between gelation ability and film strength while minimizing processing complexity.
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
The modified starch gel demonstrates reduced viscosity and improved fluidity, enabling the production of hard empty capsules with excellent strength and toughness, suitable for food and medical applications.
Implementation Method 1
treating a starch with a debranching enzyme (for example, isoamylase and pullulanase)
Implementation Method 2
reacting a starch solution with a debranching enzyme
Implementation Method 3
the modified starch possesses excellent gelation ability, film-forming capacity and film strength
Data Source
AI summary
The present invention relates to a modified starch and a method for obtaining the modified starch by using a debranching enzyme, such as isoamylase, pullulanase, limit dextrinase and the like. The debranching enzyme modified starch of present invention exhibits excellent film-forming capacity, film strength, and gelation ability, so as to be used as a material for making hard capsules without the use of coagulants and plasticizers.