Enzymatic Starch Modification for Prebiotic Oligosaccharides
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for modifying starch and starch derivatives to enhance their nutritional value and functional properties are limited in creating prebiotic oligosaccharides that effectively stimulate beneficial gut bacteria and resist digestion in the small intestine.
Innovation Solution
Employing an α-glucanotransferase enzyme, specifically GTFB type glucansucrases, to catalyze reactions that introduce (α1→6) and (α1→4) glucosidic linkages in starch and starch derivatives, resulting in partially resistant maltodextrins and prebiotic isomalto-oligosaccharides (IMO) that are resistant to intestinal enzymes and serve as substrates for beneficial bifidobacteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If starch is modified to create prebiotic oligosaccharides with (α1→6) and (α1→4) linkages, then resistance to intestinal digestion is improved, but manufacturing complexity increases
Solution Approach 1:
The patent modifies the glycosidic linkage parameters of starch by introducing specific (α1→6) and (α1→4) linkages through enzymatic transglycosylation. This changes the structural parameters of the starch molecule to create prebiotic oligosaccharides that resist intestinal digestion while maintaining manufacturability through controlled enzymatic reactions
Solution Approach 2:
The patent uses α-glucanotransferase enzymes as intermediaries to catalyze the formation of specific glycosidic linkages. These enzymes mediate the transformation of regular starch into prebiotic oligosaccharides with desired resistance properties, simplifying the manufacturing process compared to direct chemical modification
2Reliability
If α-glucanotransferase is used to introduce (α1→6) and (α1→4) linkages, then prebiotic effect is improved, but production time increases
Solution Approach 1:
The patent employs continuous enzymatic transglycosylation reactions where α-glucanotransferase continuously catalyzes the formation of prebiotic oligosaccharides. The process maintains continuous useful action by optimizing reaction conditions to sustain enzyme activity throughout the production period, reducing total production time while ensuring adequate prebiotic effect
Solution Approach 2:
The patent optimizes reaction parameters including temperature, pH, and enzyme concentration to maximize the rate of prebiotic oligosaccharide formation. By adjusting these parameters, the production time is reduced while maintaining the desired prebiotic effect through efficient enzymatic conversion
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 derivatives exhibit reduced glucose production in the small intestine, contributing to health benefits such as obesity prevention and improved gut health by selectively stimulating beneficial gut bacteria, while also being partially resistant to digestion, thus acting as effective prebiotics.
Implementation Method 1
Employing an α-glucanotransferase enzyme, specifically GTFB type glucansucrases, to catalyze reactions that introduce (α1→6) and (α1→4) glucosidic linkages
Implementation Method 2
partially resistant to digestion, thus acting as effective prebiotics
Data Source
AI summary
The invention relates to the field of poly-and oligosaccharides and their nutritional effects. In particular, it relates to the application of α-glucanotransferases in methods for preparing dietary fibers, including prebiotic oligosaccharides, and to novel oligosaccharides obtainable thereby. Provided is a method for producing a mixture of gluco-oligosaccharides having one or more consecutive (α1→6) glucosidic linkages and one or more consecutive (α1→4) glucosidic linkages, comprising contacting a poly- and/or oligosaccharide substrate comprising at least two (α1→4) linked D-glucose units with an α-glucanotransferase capable of cleaving (α1→4) glucosidic linkages and making new (α1→4) and (α1→6) glucosidic linkages. Also provided are (isolated) gluco-oligosaccharides obtainable thereby, and their application in nutritional and cosmetic compositions.