Polymethoxyflavones Block Citrus Bitterness via TAS2R Antagonism
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Solution Overview
Problem
There is a need to discover compounds that effectively block the bitter taste receptors activated by compounds present in Citrus fruits, as existing bitter receptor blockers are not effective in reducing the bitterness of Citrus products.
Innovation Solution
The disclosure provides specific polypeptide sequences and polymethoxyflavones such as sinensetin, 4′-hydroxy-sinensetin, quercetogetin, nobiletin, tangeretin, and heptamethoxyflavone, which can be used to reduce the bitterness of Citrus-based compositions by antagonizing the bitter taste receptors, specifically TAS2R receptors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing bitter receptor blockers are used, then bitterness of coffee and other beverages is reduced, but effectiveness against Citrus products is insufficient
Solution Approach 1:
The patent identifies and targets specific local receptor subtypes (TAS2R1, TAS2R3, TAS2R4) that are particularly responsible for Citrus bitterness perception, rather than using generic bitter blockers. This localized approach allows the compounds to effectively block Citrus bitterness while maintaining selectivity for the relevant receptor population.
Solution Approach 2:
The patent modifies the chemical structure and binding characteristics of bitter receptor blockers to change their affinity and selectivity parameters. The disclosed compounds have altered molecular properties that enable them to bind with high affinity to specific Citrus-activating TAS2R receptors, thereby changing the receptor-blocker interaction parameters to achieve effectiveness against Citrus products.
2Ease of operation
If sweeteners are added to offset bitterness, then palatability is improved, but caloric content and taste alteration increase
Solution Approach 1:
The patent extracts and targets the specific receptor mechanism responsible for bitterness perception in Citrus products, allowing the bitter compounds to be blocked without adding other substances. This selective blocking approach removes the need for additional sweeteners, thereby avoiding the associated caloric content and taste alteration issues.
Solution Approach 2:
The patent introduces bitter receptor blocker compounds as intermediary substances that mediate the interaction between bitter compounds and taste receptors. These blockers act as competitive inhibitors that prevent bitter compounds from activating their receptors, thereby reducing perceived bitterness without requiring the addition of sweeteners or other flavor-modifying substances.
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
These compounds effectively reduce the perception of bitterness in Citrus products, enhancing their palatability without altering their natural flavor or increasing caloric content.
Implementation Method 1
The disclosure provides specific polypeptide sequences and polymethoxyflavones such as sinensetin, 4′-hydroxy-sinensetin, quercetogetin, nobiletin, tangeretin, and heptamethoxyflavone, which can be used to reduce the bitterness of Citrus-based compositions by antagonizing the bitter taste receptors, specifically TAS2R receptors.
Data Source
AI summary
The present disclosure generally provides methods for identifying compounds that block bitter receptors, particularly the bitter receptors activated by certain compounds commonly present in Citrus extracts. The disclosure also provides compositions comprising such compounds and methods of their use.