Electrodialysis Ion Exchange Methods for Milk Components

A process to demineralize milk proteins like whey without using ion exchange resins. The process involves three steps: (i) adding water to the milk protein composition, (ii) passing the diluted composition through an electrodialyzer to remove minerals, and (iii) adding a basic solution to replace some of the removed minerals. The electrodialyzer has cells with alternating cationic and anionic membranes. This allows selective removal of minerals without adding exogenous ions. The process can also have optional steps like heat treatment, additional electrodialysis, and salt separation.

Source

Demineralization process for milk protein compositions like whey without using ion exchange resins. The process involves electrodialysis in a three-compartment electrodialyzer that replaces cations in the milk protein composition with hydrogen ions to demineralize it. The electrodialyzer has a first compartment with cationic and anionic membranes, and a second compartment with just anionic and cationic membranes. After electrodialysis, the demineralized and acidified composition is neutralized in a separate step using a basic solution.

Source

Process for demineralizing milk proteins like whey without using ion exchange resins, which limits the introduction of exogenous minerals into the demineralized product. The process involves acidifying the milk protein composition, then electrodialyzing it on a two-compartment electrodialyzer with bipolar membranes. The process removes minerals by transferring them between compartments using the electric field.

Source

Demineralizing milk protein compositions like whey without using ion exchange resins to reduce salts and minerals. The process involves treating the milk protein composition with membrane filtration techniques like nanofiltration and reverse osmosis to selectively remove minerals while retaining the protein and lactose. The membrane filtration steps replace the traditional ion exchange resin step, allowing higher demineralization levels without introducing exogenous minerals.

Source

Process to demineralize dairy protein compositions like whey without using ion exchange resins and minimizing the introduction of exogenous minerals. The process involves treating the dairy protein composition in a multi-stage electrodialysis setup with specific compartment configurations. The steps include: (i) providing the dairy protein composition, (ii) electrodialyzing it in a three-compartment setup to replace cations with hydrogen ions and acidify, (iii) optionally further electrodialyzing in a two-compartment setup, (iv) obtaining the demineralized protein composition, (v) optionally electrodialyzing again in a bipolar membrane setup, and (vi-vii) further filtration steps. The steps progressively remove minerals while acidifying. The acidification helps prevent scaling and fouling in later steps. The bip

Source

Process for demineralizing dairy protein compositions like whey without using ion exchange resins. The process involves acidifying the dairy protein composition in an electrodialyzer with three-compartment cell units. This substitutes cations with hydrogen ions to demineralize the composition. After acidification, basic solutions can be added to neutralize the pH. This allows demineralization without introducing exogenous minerals from ion exchange resins. The acidified composition can also be further processed to remove chloride and other anions. The resulting demineralized dairy protein composition can have lower mineral content compared to traditional ion exchange methods.

Source

A process for demineralizing a dairy protein composition like whey without using ion exchange resins, and the resulting demineralized dairy protein composition. The process involves electrodialysis with bipolar membranes to separate the protein and minerals, followed by pH adjustment and regeneration of the acid and base using bipolar electrodialysis. This allows demineralization without introducing exogenous minerals like ion exchange resins.

Source

A process for demineralizing dairy protein compositions like whey without using ion exchange resins to eliminate exogenous mineral compounds. The process involves acidifying the protein composition, partially demineralizing it, and then further demineralizing and neutralizing it using electrodialysis steps. The steps are: (i) supply of the dairy protein composition, (ii) acidifying and partially demineralizing, (iii) further demineralizing using a two-compartment electrodialyzer, (iv) neutralizing the composition, (v) optionally treating the sodium chloride, and (vi) obtaining the demineralized dairy protein composition. The process avoids using ion exchange resins that introduce exogenous minerals.

Source

A cation exchange membrane for electrodialysis of milk that selectively removes mineral components while maintaining electrical properties. The membrane comprises a polyvinyl alcohol-based copolymer containing a vinyl alcohol segment and an anionic polymer segment with an anionic group. The membrane's domain size is reduced through microphase separation, resulting in a film with reduced phase separation domain size. This microphase structure enables selective removal of mineral components while preserving the membrane's charge density and electrical properties.

Source

A method for producing concentrated whey for dairy products that achieves high nutritional, biological, and physico-chemical parameters while maintaining optimal pH levels. The method involves pasteurization, thickening to a mass fraction of solids of at least 20%, cooling, packaging, and storage. The concentrated whey is then demineralized through electrodialysis at pH levels between 6.0-6.7, controlling the acidity to 25-90% of the original serum. The process maintains a stable pH during heat treatment, preventing protein degradation and maintaining flavor. The concentrated whey can be further processed through vacuum evaporation, nanofiltration, or reverse osmosis to achieve the desired concentration.

Source