Green Tea Polysaccharide Extraction for Stable Cosmetic Formulations
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Solution Overview
Problem
Current methods for extracting polysaccharides from green tea are inefficient, requiring excessive time and not suitable for mass production, leading to poor formulation stability and limited use in cosmetic applications for skin whitening, moisturization, and anti-wrinkle effects.
Innovation Solution
A method involving the removal of chlorophyll and low molecular weight polyphenols from green tea powder using a solvent, followed by hot-water extraction and separation of polysaccharides through ultrafiltration and ethanol precipitation, enabling efficient production of green tea polysaccharides for use in cosmetic compositions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If ion exchange and gel filtration chromatography are used to separate polysaccharides from green tea, then separation purity is improved, but production time increases excessively and mass production becomes difficult
Solution Approach 1:
The patent changes the separation parameters from traditional ion exchange and gel filtration chromatography to ultrafiltration based molecular weight separation. This parameter change enables faster processing while maintaining effective separation of polysaccharides from other green tea components, resolving the contradiction between separation purity and production time.
Solution Approach 2:
The patent extracts only the polysaccharide fraction from green tea using ultrafiltration and ethanol precipitation, separating it from catechins, polyphenols, and other components. This selective extraction approach achieves sufficient purity for cosmetic applications without requiring the time-consuming multi-step chromatography processes.
2Reliability
If green tea extract is used in large amounts to provide desired cosmetic effects, then efficacy is improved, but formulation stability deteriorates due to discoloration
Solution Approach 1:
The patent removes discoloration-prone components such as catechins, polyphenols, and chlorophyll from the green tea extract through solvent treatment and ultrafiltration, retaining primarily the polysaccharide fraction. This extraction of unstable components improves formulation stability while maintaining the cosmetic efficacy of the polysaccharides for skin whitening, moisturization, and anti-wrinkle effects.
Solution Approach 2:
The patent creates a localized purified polysaccharide fraction with specific properties suitable for cosmetic applications. By isolating the polysaccharide component with controlled molecular weight and purity, the formulation achieves both stability and efficacy without the discoloration problems associated with whole green tea extract.
3Stability of the object's composition
If polyphenols are formulated into capsule form to improve stability, then storage stability is improved, but they can still be readily discolored over time and cannot be used as cosmetic materials
Solution Approach 1:
The patent extracts and removes the polyphenol and catechin components from green tea that are responsible for discoloration, retaining the polysaccharide fraction. This selective removal eliminates the harmful discoloration effect while preserving the beneficial cosmetic properties, making the product suitable for cosmetic formulations without requiring capsule encapsulation.
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 allows for the economical production of green tea polysaccharides in large quantities, providing excellent skin whitening, moisturizing, and anti-wrinkle effects without skin irritation, and improves the stability of the cosmetic composition.
Implementation Method 1
removing chlorophyll and low molecular weight polyphenols from green tea powder using a solvent
Implementation Method 2
hot-water extracting water-soluble active ingredients from the green tea residue of step a)
Implementation Method 3
separating the polysaccharides of green tea from the hot-water extract of step b) by ultrafiltration
Implementation Method 4
separating the polysaccharides of green tea from the hot-water extract of step b) by ultrafiltration and ethanol precipitation
Data Source
AI summary
Disclosed is a method for preparing polysaccharides of green tea, and more particularly to a method for preparing polysaccharides of green tea comprising the steps of: a) removing chlorophyll and a low molecular weight polyphenol from green tea powder using a solvent; b) hot-water extracting a water-soluble active ingredient from the green tea residue of step a); and c) separating the polysaccharides of green tea from the hot-water extract of step b) by ultrafiltration and ethanol precipitation. Also, the present invention relates to a cosmetic composition for skin whitening, moisturization and anti-wrinkle effects comprising the polysaccharides of green tea as an effective ingredient.