Gamma-Cyclodextrin Biosynthesis From Sucrose With Higher Purity
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Solution Overview
Problem
Current methods for producing cyclodextrins face issues such as supply chain shortages, scalability, quality variations, purification challenges, and high costs, particularly in the food and pharmaceutical industries, where starch-based production methods are inefficient and require FDA certification.
Innovation Solution
A biosynthetic method for producing cyclodextrins from sucrose using enzymes like amylosucrase, sucrose phosphorylase, and cyclodextrin glucanotransferase to enzymatically convert sucrose to amylose and then to cyclodextrin, bypassing starch as a starting material, thereby enhancing yield and purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If starch-based production methods are used, then cyclodextrins can be produced, but supply chain shortages and high costs occur
Solution Approach 1:
The patent extracts the essential function of starch conversion by using engineered enzymes (amylosucrase, cyclodextrin glucanotransferase) to directly convert sucrose to cyclodextrins, eliminating the need for starch as a starting material and bypassing supply chain dependencies on starch sources
Solution Approach 2:
The patent changes the biochemical parameters of the production system by using variant enzymes with modified amino acid sequences that have enhanced activity and selectivity, enabling efficient cyclodextrin production from sucrose without requiring starch-based substrates
2Manufacturing precision
If starch-based production methods are used, then cyclodextrins can be produced, but purity and byproduct removal are problematic
Solution Approach 1:
The patent converts the potential harm of byproduct formation into a benefit by engineering enzymes that produce desirable byproducts or minimal waste, and by using variant cyclodextrin glucanotransferase enzymes that enhance gamma-cyclodextrin selectivity, thereby improving purity while reducing unwanted byproducts
Solution Approach 2:
The patent changes the enzymatic reaction parameters through protein engineering, creating variant enzymes with optimized catalytic properties that increase product purity and reduce byproduct formation through enhanced substrate specificity and reaction selectivity
3Productivity
If variant enzymes with improved activity are used, then production efficiency increases, but enzyme complexity and development time increase
Solution Approach 1:
The patent segments the production process into distinct enzymatic steps performed by specialized enzymes (amylosucrase for sucrose to amylose conversion, cyclodextrin glucanotransferase for cyclodextrin formation), allowing each enzyme to be independently optimized and characterized
Solution Approach 2:
The patent creates variant enzymes that can serve multiple functions or be used in combination systems, where the engineered amylosucrase and cyclodextrin glucanotransferase work synergistically in a coordinated manner to achieve efficient cyclodextrin production from sucrose
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 method achieves higher yields of gamma-cyclodextrin with reduced byproducts, improved purity, and cost-effectiveness, addressing the limitations of traditional starch-based methods.
Implementation Method 1
contacting sucrose with an enzyme, or an enzyme mixture, capable of converting sucrose to amylose
Implementation Method 2
amylosucrase, sucrose phosphorylase, and cyclodextrin glucanotransferase to enzymatically convert sucrose to amylose
Implementation Method 3
contacting the amylose produced in (a) with an enzyme capable of converting amylose to cyclodextrin
Implementation Method 4
cyclodextrin glucanotransferase to enzymatically convert sucrose to amylose and then to cyclodextrin
Implementation Method 5
the sucrose phosphorylase is capable of converting sucrose to glucose-1-phosphate
Data Source
AI summary
Provided herein are methods for the enzymatic production of gamma-cyclodextrin from sucrose. In some cases, the methods involve contacting sucrose with one or more enzymes to convert sucrose to amylose, followed by contacting the amylose with one or more enzymes to convert the amylose to gamma-cyclodextrin. In some cases, the methods produce higher yields of gamma-cyclodextrin relative to alpha-cyclodextrin, beta-cyclodextrin, or both.