Lipolytic Enzyme Variants for Wholemeal Dough Stability
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Solution Overview
Problem
Wholemeal doughs exhibit poorer stability and lower volume compared to white flour doughs due to higher lipid content and increased free fatty acids during storage, necessitating improved processing aids beyond chemical emulsifiers.
Innovation Solution
A variant polypeptide with lipase activity, specifically with amino acid substitutions and insertions, is used to enhance dough stability and baked product volume by catalyzing emulsifying molecules in situ, replacing traditional chemical additives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If chemical emulsifiers are used to improve dough stability, then dough stability is improved, but consumer resistance increases due to chemical additives
Solution Approach 1:
The lipolytic enzyme naturally present in flour or added to dough performs the emulsifying function autonomously. The enzyme catalyzes the breakdown of lipids into emulsifying molecules in situ, eliminating the need for external chemical emulsifiers while maintaining dough stability improvement.
Solution Approach 2:
The lipolytic enzyme acts as a natural intermediary substance that facilitates the formation of emulsifying molecules from lipid substrates already present in the dough system. This biological catalyst replaces synthetic chemical emulsifiers while achieving the same functional outcome of improving dough stability.
2Quantity of substance
If wholemeal flour is used to increase nutritional value, then nutritional quality is improved, but dough stability deteriorates due to higher lipid content and free fatty acids
Solution Approach 1:
The lipolytic enzyme converts the harmful effect of free fatty acids (which cause dough instability) into a beneficial effect by catalyzing the formation of emulsifying molecules. These emulsifying molecules stabilize the dough, thereby transforming the detrimental lipid oxidation products into useful stabilizing agents that improve both dough stability and maintain nutritional quality.
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 variant polypeptide significantly increases dough stability and baked product volume, particularly in wholemeal products, by improving shock resistance and maintaining volume after mechanical stress, outperforming reference polypeptides.
Implementation Method 1
a variant polypeptide having a lipase activity
Implementation Method 2
lipolysis of endogenous lipids
Data Source
AI summary
The present invention relates to a variant polypeptide having a lipase activity, wherein the polypeptide may be a polypeptide that has an amino acid sequence which has at least 70% identity to a mature amino acid sequence of SEQ ID NO: 1 or SEQ ID NO: 6, wherein the polypeptide comprises an amino acid substitution at position 295 and at least one further amino acid substitution at position 113, 121, 179 and/or 284, wherein the positions are defined with reference to SEQ ID NO: 1 or SEQ ID NO: 6. The invention further relates to a process for preparing a dough wherein a polypeptide as disclosed herein is used and baked product prepared from the dough.