Tagatose Production via Fructose Epimerization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The production of tagatose from lactose or lactose-containing products is hindered by price fluctuations and limitations in conventional chemical and enzymatic methods, leading to unstable and costly production processes.
Innovation Solution
A method involving the epimerization of fructose using hexuronate C4-epimerase to produce tagatose, followed by purification and crystallization, utilizing common and inexpensive raw materials like glucose, sucrose, or fructose, ensuring high yield and economic production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If tagatose is produced from lactose or lactose-containing products, then tagatose production is achieved, but production cost stability deteriorates due to price fluctuations
Solution Approach 1:
The patent applies universality by using fructose as a common raw material that can serve multiple purposes in the food industry, replacing the specialized lactose-based route. Fructose is a widely available commodity sugar that can be produced from various sources (corn, sugarcane, etc.), making the tagatose production process less vulnerable to price fluctuations of dairy-specific products like lactose.
Solution Approach 2:
The patent employs this principle by selecting fructose, a inexpensive and readily available commodity chemical, as the starting material instead of lactose which has volatile pricing. Fructose can be easily produced from abundant agricultural resources, providing a stable, low-cost feedstock for tagatose manufacturing that is not subject to dairy market cycles.
2Quantity of substance
If conventional chemical methods are used to convert lactose into galactose, then tagatose production is achieved, but manufacturing precision deteriorates due to epimerization limits
Solution Approach 1:
The patent replaces conventional chemical catalysis with enzymatic catalysis using fructose epimerase. This biochemical approach provides superior precision and selectivity for the epimerization reaction, achieving high conversion of fructose to tagatose with minimal byproducts, thereby resolving the manufacturing precision limitations of chemical methods.
Solution Approach 2:
The patent changes the reaction parameters by using enzymatic conditions (mild temperature, neutral pH, specific enzyme concentration) instead of harsh chemical conditions. This allows for precise control of the epimerization process, achieving high selectivity and product purity that cannot be obtained through conventional chemical methods.
3Quantity of substance
If conventional enzymatic methods are used with galactose, then tagatose production is achieved, but productivity deteriorates due to use of galactose as intermediate
Solution Approach 1:
The patent applies preliminary action by directly using fructose as the starting material instead of first producing galactose from lactose. This eliminates the intermediate galactose production step, reducing the number of process stages and improving overall productivity. The fructose epimerase enzyme directly converts fructose to tagatose in a single step, streamlining the manufacturing process.
Solution Approach 2:
The patent extracts and eliminates the unnecessary intermediate step involving galactose from the production pathway. By using fructose as the direct substrate for epimerization, the process removes the lactose-hydrolysis-galactose-isomerization sequence, simplifying the flow and improving production efficiency through a more direct route to tagatose.
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 provides a stable and economical production of tagatose with high yield, reducing production costs by using fructose as a raw material, which is more stable in price compared to lactose, and allows for efficient mass production of this low-calorie sweetener.
Implementation Method 1
performing epimerization of fructose using hexuronate C4-epimerase to obtain an epimerized product including tagatose
Implementation Method 2
crystallizing the purified epimerized product
Data Source
AI summary
A method for producing tagatose comprises: a) performing epimerization of fructose using hexuronate C4-epimerase to obtain an epimerized product comprising tagatose; b) purifying the epimerized product; and c) crystallizing the purified epimerized product. The hexuronate C4-epimerase is an enzyme derived from Thermotoga maritima, Thermotoga neapolitana, Thermotoga thermarum or mutants thereof. The hexuronate C4-epimerase is produced from strains Escherichia coli, Corynebacterum glutamicum, Aspergillus oryzae, or Bacillus subtilis.