Potassium Carbonate Ascorbate Preservative for Fresh Produce
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Solution Overview
Problem
Current methods for preserving fresh produce, such as cut fruits and vegetables, often compromise on texture, crispness, and taste while inhibiting browning, and there is a need for an improved preservation agent and method that effectively maintains these qualities.
Innovation Solution
A solid composition comprising potassium carbonate and at least one source of ascorbate or isoascorbate ions, with a specific molar ratio, optionally with excipients, dissolved in an aqueous solvent for direct application to fresh produce, which inhibits and reverses enzymatic browning reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If conventional preservation methods using metal ascorbates or combinations of ascorbic acid and metal salts are applied, then browning is inhibited and shelf-life is extended, but texture, crispness, and taste are compromised
Solution Approach 1:
The invention changes the chemical parameters by using potassium carbonate instead of metal salts and specifying a precise molar ratio range (1.00:0.95 to 1.00:0.50) of potassium cations to ascorbate anions. This parameter optimization maintains the preservative effect while improving texture and taste retention compared to conventional metal-based formulations
Solution Approach 2:
The invention creates a composite preservation system combining potassium carbonate with ascorbate sources (ascorbic acid, sodium ascorbate, potassium ascorbate, or isoascorbic acid) in specific proportions. This composite approach synergistically provides both browning inhibition and quality maintenance that neither component achieves alone
2Object-affected harmful factors
If existing antistalling formulations containing sodium carbonate, sodium bicarbonate, or potassium bicarbonate are used, then some preservation effect is achieved, but optimal browning inhibition and quality maintenance are not realized
Solution Approach 1:
The invention identifies potassium carbonate as the superior alkaline component and specifies optimal molar ratio ranges with ascorbate sources. This precise parameter control ensures consistent and reliable browning inhibition that exceeds the performance of existing formulations using sodium carbonate, sodium bicarbonate, or potassium bicarbonate
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 solution effectively extends the shelf-life of fresh produce by maintaining texture, crispness, and taste while significantly reducing browning, as demonstrated by improved browning percentage results compared to existing methods.
Implementation Method 1
at least one source of ascorbate or isoascorbate ions... which inhibits and reverses enzymatic browning reactions
Implementation Method 2
A solid composition comprising potassium carbonate and at least one source of ascorbate or isoascorbate ions, with a specific molar ratio
Data Source
Figure 1
AI summary
The invention relates to a solid composition (C), comprising potassium carbonate and at least one source of ascorbate and/or isoascorbate ions and optionally excipients, an aqueous solution of said solid composition (C), a method for preserving fresh produce by applying the solution of solid composition (C), and fresh produce preserved by application of this method.