Melatonin Container Light Blocking via Anthraquinone Dyes
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Solution Overview
Problem
Melatonin-based personal health compositions are prone to photodegradation during storage due to exposure to visible light, as amber containers, previously thought to be effective, do not adequately filter the wavelengths that cause degradation.
Innovation Solution
A container made of polyester with a colorant composition comprising a first and second anthraquinone dye and titanium dioxide, which absorbs and blocks light in the range of 190 nm to 750 nm, effectively mitigating the photodegradation of melatonin by blocking its maximum absorbance peaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an amber container is used to mitigate photodegradation, then light filtration is improved, but the container fails to adequately filter wavelengths that cause melatonin degradation
Solution Approach 1:
The patent changes the optical parameters of the container by incorporating specific dyes (anthraquinone dyes absorbing at 450-550 nm and 600-700 nm) and titanium dioxide to achieve 1% or less light transmission in the 190-750 nm range, transforming the container from inadequate amber filtration to effective broad-spectrum light blocking that specifically addresses melatonin's absorbance peaks
Solution Approach 2:
The patent uses a composite colorant system combining multiple anthraquinone dyes with different absorption characteristics and titanium dioxide pigment, creating a synergistic material composition that provides superior light blocking across the problematic wavelength range compared to single-material amber containers
2Object-affected harmful factors
If an opaque container is used to prevent photodegradation, then light blocking is improved, but the consumer cannot visually inspect the contents
Solution Approach 1:
The patent uses colored dyes that absorb specific wavelengths while allowing the container to maintain aesthetic appearance and potential visual inspection capabilities, transforming the approach from complete opacity to selective wavelength absorption that protects melatonin while preserving consumer interaction
3Object-affected harmful factors
If removable packaging material is used to cover the container, then photodegradation protection is improved, but the customer purchasing experience is deteriorated
Solution Approach 1:
The patent incorporates light-blocking dyes and pigments directly into the container material during manufacturing, performing the photodegradation protection function in advance during container production rather than requiring additional packaging steps, thereby eliminating the need for separate removable protective materials and improving purchasing experience
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 solution reduces melatonin loss to 30% or less by weight after 100 days of exposure to normal light levels, significantly improving the stability and effectiveness of melatonin compositions.
Implementation Method 1
a colorant composition comprising (1) a first anthraquinone dye, (2) a second anthraquinone dye absorbing visible light above 650 nm, and (3) titanium dioxide; wherein the container absorbs, reflects, and blocks light in the range of 190 nm-750 nm
Implementation Method 2
melatonin can be prone to photodegradation under normal conditions experienced during manufacture, packaging, while on the shelf at a store, and/or when stored by a consumer prior to use
Data Source
AI summary
A container for personal health compositions with melatonin. The container has a polyester and a colorant composition with at least two dyes and a pigment. The container can filter out the wavelengths of visible light that contribute to the photodegradation of melatonin during storage in normal factory or home light conditions.