Beverage Protein Aggregation for Stability
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Solution Overview
Problem
Existing ready-to-drink beverage products face challenges in achieving desirable texture and mouthfeel while maintaining physical stability during shelf life, as they often experience serum separation, sedimentation, or gelation due to pH instability and divalent ion interactions, especially when stored at ambient temperatures.
Innovation Solution
A method involving specific heat treatment of a composition with micellar caseins and whey proteins, combined with a controlled concentration of divalent cations and a stabilizing system of hydrocolloids, to form agglomerated proteins with a mean diameter of 5-30 microns, ensuring optimal sensorial properties and physical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If protein aggregation is used to provide texture and mouthfeel, then texture and mouthfeel are improved, but physical stability during shelf life deteriorates due to serum separation, sedimentation, or gelation
Solution Approach 1:
The patent applies parameter changes by controlling pH to a specific range (6.5-7.0) and using defined calcium concentrations (3-20 mM) to optimize protein aggregation. These parameter adjustments enable the formation of stable protein aggregates that provide desired texture while preventing gelation and serum separation during shelf life storage.
Solution Approach 2:
The patent employs preliminary action by pre-heating the beverage composition to 60-90°C for 10-30 minutes before final formulation. This preliminary heat treatment promotes controlled protein aggregation and casein micelle formation, creating a stable foundation that prevents subsequent gelation and maintains physical stability throughout the product shelf life.
2Ease of operation
If divalent cations are added to induce protein aggregation, then texture is improved, but gelation occurs during storage
Solution Approach 1:
The patent resolves the gelation issue by precisely controlling divalent cation concentration within 3-20 mM and maintaining pH between 6.5-7.0. These parameter optimizations enable sufficient protein aggregation for texture improvement while preventing the excessive cross-linking that会导致 gelation during storage.
Solution Approach 2:
The patent applies partial action by using moderate, controlled amounts of divalent cations (3-20 mM) rather than high concentrations. This partial addition is sufficient to induce desired protein aggregation and texture enhancement while avoiding the excessive cross-linking that would cause gelation and harmful effects during shelf life.
3Ease of operation
If heat treatment is applied to promote protein aggregation, then texture is improved, but viscosity increases excessively
Solution Approach 1:
The patent controls viscosity by optimizing heat treatment parameters (60-90°C for 10-30 minutes) combined with pH control (6.5-7.0) and divalent cation concentration (3-20 mM). These coordinated parameter adjustments promote adequate protein aggregation for texture improvement while preventing excessive viscosity increase that would compromise beverage drinkability.
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 effectively reduces fat and sugar content while providing improved texture and mouthfeel, ensuring the beverage remains stable and homogeneous during storage, avoiding issues like gelation and sedimentation.
Implementation Method 1
heat treating the ingredient composition at ultra high temperature (UHT) at 135-150°C for 3-30 s to form agglomerated proteins
Implementation Method 2
heat treating at 60°C a milk preparation enriched with calcium in order to induce protein aggregation
Implementation Method 3
the amount of free calcium ions in bovine milk at pH 6.70 was 10.2 mM and that this value decreased to 8 mM when milk pH decreased to 6.0
Implementation Method 4
addition of free calcium on the viscosity of superphosphorylated caseins
Implementation Method 5
0.025-0.3 wt % of a stabilizing system comprising hydrocolloids
Data Source
AI summary
The invention relates to a method of producing a shelf stable ready-to-drink beverage product, comprising the steps of: providing an ingredient composition comprising micellar caseins and whey protein, having a total protein concentration of 1.5-8 wt. %, and wherein the composition has a casein to whey protein ratio of 90/10-60/40, adding divalent cations to provide a concentration of 3-20 mM free divalent cations in the ingredient composition, and 0.025-0.3 wt % of a stabilizing system comprising hydrocolloids, and subsequently heat treating the ingredient composition at ultra high temperature (UHT) at 135-150° C. for 3-30 s to form agglomerated proteins comprising casein and beta-lactoglobulin from the whey protein, the agglomerates having a size of 5-30 microns mean diameter D(4,3) as measured by laser diffraction. The invention also relates to a shelf stable ready-to-drink beverage product comprising aggregated proteins comprising micellar caseins and whey protein aggregates, wherein the product has a pH of 6.6-7.2, 1.5-8.0 wt. % milk proteins, a casein to whey protein ratio of 90/10-60/40, and a concentration of 3-20 mM divalent cations, and the aggregates are of 5-30 microns mean diameter D(4,3) as measured by laser diffraction.