Coumalic Acid Inhibits Non-Enzymatic Browning in Tea
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Solution Overview
Problem
Existing tea beverages face challenges in preventing non-enzymatic browning, which affects their appearance and shelf life, and current solutions like ascorbic acid can promote the formation of benzene when combined with benzoic acid, necessitating the development of alternative inhibitors.
Innovation Solution
Incorporating coumalic acid or its salts, and methyl coumalate, which undergo hydrolysis to form coumalic acid, into tea beverage compositions to inhibit non-enzymatic browning while minimizing benzene formation, thereby maintaining a desirable appearance and taste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ascorbic acid is used to inhibit non-enzymatic browning, then browning inhibition is achieved, but benzene formation is promoted when benzoic acid is present
Solution Approach 1:
The patent removes ascorbic acid from the beverage formulation to eliminate the harmful interaction that produces benzene. Instead, it introduces alternative antioxidants ( tocopherols, phenolic compounds, or ascorbyl palmitate) that provide browning inhibition without the harmful side effect of benzene formation when combined with benzoic acid preservatives.
Solution Approach 2:
The patent introduces intermediary substances (alternative antioxidants such as tocopherols, phenolic compounds from tea extracts, or ascorbyl palmitate) that mediate the browning inhibition function without triggering the harmful chemical reaction between ascorbic acid and benzoic acid. These intermediaries provide the desired protective effect while avoiding the harmful byproduct.
2Reliability
If coumalic acid is used to inhibit non-enzymatic browning, then browning is prevented and appearance is maintained, but the formulation complexity increases
Solution Approach 1:
The patent employs coumalic acid as a multi-functional ingredient that simultaneously provides browning inhibition, acts as an acidulant to regulate pH, and contributes to flavor profiles. This consolidates multiple functions into a single substance, actually reducing overall formulation complexity compared to using separate ingredients for each function.
Solution Approach 2:
The patent utilizes the pH-dependent properties of coumalic acid and its ability to function effectively across a range of concentrations (typically 1-100 ppm) to provide robust browning prevention. By optimizing the concentration parameter and leveraging coumalic acid's inherent properties, the formulation achieves reliable performance without requiring complex multi-ingredient systems.
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
Coumalic acid effectively inhibits non-enzymatic browning in tea beverages, maintaining a light appearance and extending shelf life, with lower concentrations providing similar inhibition to higher concentrations of ascorbic acid, thus offering a more efficient and safer alternative.
Implementation Method 1
methyl coumalate, which undergoes hydrolysis to form coumalic acid
Data Source
AI summary
A tea beverage product that includes at least one tea component as well as coumalic acid or its salt to inhibit non-enzymatic browning of the tea beverage product. The tea component may be a green tea component, red tea component, black tea component, white tea component or a blend of tea components. The coumalic acid may be present in an amount less than 100 ppm. Alternatively, a coumalate may be employed, which will undergo hydrolysis within the tea beverage or concentrate product to form coumalic acid. In addition, a method for inhibiting non-enzymatic browning, by adding at least one of coumalic acid, a coumalic acid salt or a coumalate to a tea beverage composition.