Water-Soluble Pea Polysaccharide Extraction
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Solution Overview
Problem
Existing methods for producing water-soluble pea polysaccharides require a de-esterification step, increasing production costs and complexity, while also affecting the final product's color, making it necessary to develop a simpler method that stabilizes protein dispersion across a wide pH range without this step.
Innovation Solution
A method involving the extraction of pea fiber materials with specific particle sizes and pH adjustments to produce water-soluble pea polysaccharides with high methyl esterification degrees, which stabilizes protein dispersion without the need for de-esterification, using grinding and pH manipulation to achieve the desired properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a de-esterification step is used to reduce methyl esterification degree, then protein dispersion stabilizing ability is improved, but production cost and process complexity increase
Solution Approach 1:
The invention extracts only the essential functional component (water-soluble polysaccharide with high methyl esterification degree) from pea fiber material, achieving protein dispersion stabilization without requiring the de-esterification step. This selective extraction approach maintains the stabilizing ability while eliminating unnecessary process complexity.
Solution Approach 2:
The invention changes the key parameter of methyl esterification degree to be high (45% or more) rather than low, which is contrary to conventional wisdom. By optimizing extraction conditions (pH 3-12, temperature 60-150°C, time 0.5-3 hours), the process achieves effective protein dispersion stabilization while maintaining high methyl esterification, thus avoiding the need for de-esterification.
2Reliability
If a de-esterification step is used to reduce methyl esterification degree, then protein dispersion stabilizing ability is improved, but production cost increases
Solution Approach 1:
The invention extracts the functional polysaccharide directly from pea fiber material using optimized conditions, obtaining water-soluble polysaccharide with high methyl esterification degree (45% or more) that effectively stabilizes protein dispersion. This eliminates the costly de-esterification step while maintaining the essential stabilizing function.
Solution Approach 2:
The invention uses readily available pea fiber material as a raw material source, which is inexpensive and abundant. By utilizing this cheap raw material and optimizing extraction conditions, the process produces an effective dispersion stabilizer without requiring expensive de-esterification treatments.
3Reliability
If de-esterification is performed, then protein dispersion stabilizing ability is improved, but product color is adversely affected
Solution Approach 1:
The invention extracts water-soluble polysaccharide with high methyl esterification degree (45% or more) from pea fiber material using controlled pH and temperature conditions. This extraction process preserves the natural color of the polysaccharide while achieving effective protein dispersion stabilization, avoiding the color deterioration caused by de-esterification.
Solution Approach 2:
The invention optimizes extraction parameters (pH 3-12, temperature 60-150°C, time 0.5-3 hours) to maintain high methyl esterification degree and preserve product color. By controlling these parameters, the process achieves both effective protein dispersion stabilization and acceptable product appearance without de-esterification.
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
This method enables the production of water-soluble pea polysaccharides that effectively stabilize proteins across a wide pH range, resulting in beverages with low viscosity and smooth mouthfeel, while maintaining high methyl esterification degrees for improved performance.
Implementation Method 1
High methoxyl pectin (HM-pectin) and carboxymethyl cellulose (CMC) maintain a dispersion of protein particles in pH 4.2 to 4.6 with the electrostatic repulsive action and molecular network
Implementation Method 2
grinding a pea fiber material, with a grinder, before, during or after removing starch or protein of the pea fiber material, to adjust that 80% or more particles are distributed in a particle size between 100 μm and 1000 μm
Implementation Method 3
adjusting the pH to a range from pH 3 to pH 12 with an acid or alkali; and then extracting a water-soluble pea polysaccharide from the pea fiber material at 60°C or more and 150°C or less for 0.5 to 3 hours
Implementation Method 4
extracting a water-soluble pea polysaccharide from the pea fiber material at 60°C or more and 150°C or less for 0.5 to 3 hours
Data Source
AI summary
[Problem] To produce a pea polysaccharide which exhibits a protein dispersion stabilizing ability in a wide pH range by a simple method. [Solution] A water-soluble pea polysaccharide having an excellent protein dispersion stabilizing ability can be produced by a simple method in which a pea fiber material is used as a raw material and the pea fiber material is extracted, wherein the particle diameters of 80% or more of the pea fiber material are distributed over a range from 100 µm to 1000 µm inclusive.