Lutein Tabletting Compression Loss via Particle Size Control
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Solution Overview
Problem
Current lutein tablets suffer from high compression loss during the tableting process, leading to reduced shelf life due to lutein being extracted from the hydrocolloid matrix, which loses its protective effect and is prone to oxidation.
Innovation Solution
A solid formulation comprising milled carotenoids (lutein and zeaxanthin) with a specific particle size distribution, combined with modified food starches and glucose syrup, which minimizes the compression loss by embedding lutein within a stable matrix, thereby reducing the amount of lutein on the tablet surface and protecting it from oxidation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If lutein is embedded in a hydrocolloid matrix for protection, then stability is improved, but compression loss increases during tableting
Solution Approach 1:
The patent changes the particle size parameter of lutein from conventional sizes to a specific range (D[3,2] of 0.6-1.5 μm and D[v,0.5] of 1.1-3.5 μm). This parameter modification allows lutein to be more effectively embedded in the hydrocolloid matrix, reducing compression loss during tableting while maintaining stability protection.
Solution Approach 2:
The patent creates a composite formulation combining milled lutein particles with specific hydrocolloids (modified food starches), glucose syrup, and antioxidants. This composite structure ensures lutein is properly embedded and protected within the matrix, resolving the contradiction between stability and compression loss.
2Quantity of substance
If lutein is present on tablet surface for availability, then bioavailability is improved, but oxidation resistance decreases
Solution Approach 1:
The hydrocolloid matrix acts as a protective shell or film surrounding the lutein particles. This matrix embedding protects lutein from oxidation while the formulation ensures controlled availability, resolving the contradiction between surface availability and oxidation resistance.
Solution Approach 2:
The patent incorporates water-soluble antioxidants (such as sodium ascorbate) within the hydrocolloid matrix, creating a chemically protective environment that prevents oxidation. This inert-like protective atmosphere allows lutein to maintain stability while remaining available.
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 formulation achieves a compression loss of ≤12%, enhancing the stability and shelf life of lutein tablets by maintaining lutein within the matrix, ensuring it remains protected and effective.
Implementation Method 1
embedding lutein within a stable matrix, thereby reducing the amount of lutein on the tablet surface
Implementation Method 2
the hydrocolloid which protects lutein from degradation and oxidation
Implementation Method 3
at least one water-soluble antioxidant (preferably sodium ascorbate)... protecting it from oxidation
Implementation Method 4
a milled carotenoid has the following particle size distribution: D [3,2] in the range of from 0.6 to 1.5 μm and D [v, 0.5] in the range of from 1.1 to 3.5 μm
Data Source
AI summary
Solid formulations include a milled carotenoid, at least one hydrocolloid, a glucose syrup, sucrose and at least one water-soluble antioxidant (preferably sodium ascorbate), wherein the carotenoid is selected from the group consisting of lutein and zeaxanthin and any mixture thereof, wherein the hydrocolloid is selected from the group consisting of modified food starches and any mixtures thereof, and wherein the milled carotenoid has the following particle size distribution:D [3,2] in the range of from 0.6 to 1.5 μm and D [v, 0.5] in the range of from 1.1 to 3.5 μm, all D values as measured by laser diffraction (Malvern Instruments Ltd, Malvern, UK, Mastersizer 3000) according to the Fraunhofer scattering model. The solid formulation is in form of granules which are used for dietary supplements and pharmaceuticals, such as e.g. multi-vitamin and/or multi-mineral tablets and surprisingly show a low compression loss.