Starch Half Ester Emulsifier for Stable High Oil Load Emulsions
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Solution Overview
Problem
Existing emulsifiers fail to maintain stable oil-in-water emulsions with desired particle size and viscosity over time, particularly when used at high oil loads and specific oil-to-starch ratios, leading to separation and viscosity issues.
Innovation Solution
A starch half ester of alkenyl succinic anhydride is prepared through a dispersed phase process, characterized by a water fluidity of no more than 75, which is used as a sole emulsifier to create test oil-in-water emulsions with specific ratios and oil loads, resulting in stable emulsions with less than 5% oil particles greater than 1 micron and Brookfield viscosity of less than 2000 cps after storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing emulsifiers are used to prepare oil-in-water emulsions at high oil loads, then the emulsion can be formed initially, but the emulsion becomes unstable over time with particle size increase and viscosity changes
Solution Approach 1:
The patent modifies the chemical structure of starch derivatives by controlling the degree of substitution and molecular weight distribution. Specifically, the invention uses starch derivatives with a degree of substitution of 0.03-0.15 and specific molecular weight ranges (weight average molecular weight 10,000-100,000) to achieve optimal emulsion stability at high oil loads without particle aggregation or viscosity breakdown over time.
2Use of energy by stationary object
If starch derivatives are used as emulsifiers, then the emulsion viscosity can be controlled, but the emulsion particle size increases beyond acceptable limits
Solution Approach 1:
The patent creates starch derivatives with non-uniform molecular weight distribution and specific structural characteristics along the polymer chain. The derivation process creates regions of different hydrophobicity and steric bulk at specific locations on the starch molecule, allowing simultaneous control of viscosity and particle size through localized structural modifications rather than uniform changes throughout the molecule.
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 starch half ester of alkenyl succinic anhydride effectively stabilizes oil-in-water emulsions, maintaining particle size and viscosity, even at high oil loads, ensuring long-term stability and performance.
Implementation Method 1
the starch half ester of an alkenyl succinic anhydride... when used to prepare a test oil-in-water emulsion with the starch half ester of an alkenyl succinic anhydride as a sole emulsifier
Implementation Method 2
starch half ester of an alkenyl succinic anhydride... emulsifier
Data Source
AI summary
The present invention relates to a starch emulsifier product prepared by sufficiently solubilizing a starch and subsequently sufficiently derivatizing the sufficiently solubilized starch product, in one embodiment by reacting the sufficiently solubilized starch with an alkenyl succinic anhydride. Such starch emulsifier products are useful as emulsifying and/or encapsulating agents, particularly in systems where high load and retention of the active ingredient, low surface oil exposure, and excellent oxidation resistance is desired.