Phospholipase Enzymes Reduce Foam in Ethanol Fermentation
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Solution Overview
Problem
Foam generation during ethanol fermentation is a significant issue, especially when starch-containing materials are liquefied with alpha-amylase and protease, leading to inefficiencies in ethanol production processes.
Innovation Solution
The use of phospholipase A from Talaromyces leycettanus and/or phospholipase C from Bacillus thuringiensis is introduced during the fermentation process to reduce or prevent foam formation by adding them to the yeast propagation tank or incorporating them during the conversion of starch-containing materials into fermentable sugars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If starch-containing material is liquefied with alpha-amylase and protease, then fermentable sugars are produced for ethanol fermentation, but foam generation increases significantly
Solution Approach 1:
The patent extracts and removes the harmful foam-generating components from the fermentation medium by adding phospholipase A and phospholipase C enzymes. These enzymes specifically target and break down phospholipids that are responsible for foam formation, thereby separating the harmful foaming agents from the beneficial fermentable sugars and ethanol production process
Solution Approach 2:
The patent introduces phospholipase A and phospholipase C as intermediary substances that mediate between the foam-generating phospholipids and the desired foam-free fermentation process. These enzymes act as catalysts that convert harmful phospholipids into non-foaming products, enabling both starch liquefaction and foam reduction to occur simultaneously
2Stability of the object's composition
If foam is reduced during fermentation, then fermentation medium stability improves, but additional enzyme addition increases process complexity
Solution Approach 1:
The patent applies phospholipase A and phospholipase C enzymes that perform multiple functions: they not only reduce foam by degrading phospholipids but also maintain fermentation medium stability and do not interfere with ethanol production. This multi-functionality reduces the need for separate foam control steps, thereby managing process complexity while achieving multiple benefits
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 addition of these phospholipases effectively reduces foam generation, improving the efficiency and productivity of ethanol fermentation by maintaining a stable fermentation medium, thereby enhancing ethanol production.
Implementation Method 1
a phospholipase A and/or phospholipase C is(are) present and/or added during fermentation
Data Source
AI summary
The invention relates to methods of reducing foam during ethanol fermentation by adding a phospholipase A and/or a phospholipase C during fermentation.