Sorbic Acid Microemulsion for Beverage Syrup Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing preservatives used in beverages often precipitate or form crystals, leading to cloudiness and sediment, which is unacceptable for consumers and can be equated with spoilage, and there is a need for a method to introduce sorbic acid without inducing precipitation, ensuring the beverage remains clear and stable.
Innovation Solution
Forming a microemulsion of sorbic acid with a surfactant in a non-aqueous solvent and adding it to the beverage syrup, which maintains solubility and prevents precipitation, using polysorbate as a surfactant to create an oil-in-water microemulsion that remains stable even in excess water conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If preservatives are added to beverage syrup at high concentration to ensure preservation, then microbial activity is retarded, but precipitation and crystal formation occur
Solution Approach 1:
The patent uses an intermediary substance (such as a soluble salt or organic compound) that acts as a mediator between the preservative and the syrup matrix. This intermediary forms a soluble complex with the preservative, allowing high concentrations to be dissolved without precipitation. The intermediary substance modifies the solubility characteristics of the preservative, enabling it to remain in solution while maintaining effective preservation activity.
Solution Approach 2:
The patent changes physical or chemical parameters of the syrup system, such as pH, ionic strength, or temperature, to enhance preservative solubility. By adjusting these parameters, the patent creates conditions where the preservative remains dissolved at high concentrations without forming crystals or precipitates, thus maintaining both preservation effectiveness and syrup stability.
2Reliability
If preservatives are added to maintain beverage clarity and prevent spoilage, then microbial activity is inhibited, but off-taste and adverse appearance effects occur
Solution Approach 1:
The patent introduces an intermediary substance that forms a soluble complex with the preservative, allowing the preservative to function at effective concentrations without causing cloudiness or off-taste. The intermediary acts as a carrier that delivers the preservative activity while maintaining beverage clarity and acceptable flavor characteristics.
Solution Approach 2:
The patent adjusts pH or other chemical parameters to optimize the balance between preservation effectiveness and beverage quality. By controlling these parameters, the patent ensures that the preservative provides microbial protection without causing undesirable taste or appearance effects in the final beverage.
3Reliability
If sorbic acid is introduced into concentrated syrup to provide preservation, then microbial activity is retarded, but precipitation occurs due to limited solubility
Solution Approach 1:
The patent uses an intermediary substance that forms a soluble complex with sorbic acid, dramatically increasing its solubility in the syrup matrix. This intermediary allows high concentrations of sorbic acid to be dissolved without precipitation, enabling effective preservation while maintaining syrup stability and clarity.
Solution Approach 2:
The patent changes the chemical environment of the syrup, such as adjusting pH or ionic strength, to enhance sorbic acid solubility. By modifying these parameters, the patent creates conditions where sorbic acid remains dissolved at the high concentrations needed for effective preservation, preventing crystal formation and maintaining beverage 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 method ensures the beverage syrup remains clear and stable for an extended period, preventing phase separation and microbiological activity, with a shelf life of up to 20 weeks at room temperature and 6 months at varying temperatures, maintaining the beverage's optical clarity and consumer acceptance.
Implementation Method 1
forming a microemulsion of sorbic acid with a surfactant in a non-aqueous solvent and adding it to the beverage syrup
Implementation Method 2
using polysorbate as a surfactant to create an oil-in-water microemulsion
Data Source
AI summary
A method for reducing sorbic acid precipitation during manufacture and storage of stable preserved syrup. A microemulsion of a sorbic acid compound, a non-aqueous solvent, and a surfactant is made in water. Syrup ingredients are added to a bulk quantity of liquid, and the microemulsion is added to the liquid.