Light-Assisted Drying for Biologic Preservation
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Solution Overview
Problem
Current methods for preserving proteins and vaccines require cold storage, which is costly and logistically challenging, especially in regions without adequate temperature control, and existing stabilization techniques like freeze drying are complex and time-consuming.
Innovation Solution
A novel method called light-assisted drying (LAD) uses near-infrared laser radiation to form an amorphous trehalose solid matrix, allowing for the preservation of biological materials at ambient temperatures by selectively heating water to overcome evaporative cooling and speed dehydration, thereby maintaining structural conformation and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cold storage is used to preserve proteins and vaccines, then stability and potency are maintained, but storage cost and logistical complexity increase
Solution Approach 1:
The invention changes the physical-chemical parameters of the preservation system by introducing trehalose as a protective agent and using light-assisted drying to achieve complete dehydration. This transforms the storage requirement from temperature-dependent (cold chain) to moisture-dependent (anhydrous state), allowing ambient temperature storage while maintaining protein stability
Solution Approach 2:
The invention replaces the mechanical cold storage system with a chemical preservation system using trehalose and light energy. Instead of using refrigeration machinery to maintain low temperatures, the system uses trehalose molecules to form protective complexes with proteins and employs light-assisted drying to remove water, eliminating the need for continuous energy input
2Reliability
If freeze drying is used to preserve biologics, then long-term stability is achieved, but processing time and complexity increase
Solution Approach 1:
The invention replaces the complex mechanical freeze-drying system with a simpler light-assisted drying system. Instead of using vacuum pumps, cooling plates, and heating manifolds to achieve sublimation, the system uses light energy directly absorbed by water molecules to accelerate evaporation, reducing processing time from hours to minutes while achieving comparable stability
Solution Approach 2:
The invention utilizes the phase transition of water from liquid to vapor through light-assisted heating. The laser or LED light provides energy that directly heats water molecules, accelerating their transition to vapor phase and enabling rapid dehydration without requiring the complex phase transition control needed in freeze-drying
3Use of energy by stationary object
If ambient temperature storage is used for biologics, then cost and logistics are simplified, but protein denaturation and loss of activity occur
Solution Approach 1:
The invention introduces trehalose as an intermediary substance that mediates between the protein and the ambient environment. Trehalose molecules form hydrogen bonds with protein surfaces and replace water molecules in the protein hydration shell, creating a protective interface that prevents denaturation while allowing the protein to be stored in an anhydrous state at ambient temperature
Solution Approach 2:
The invention creates a composite preservation system consisting of trehalose, protein, and residual water in specific ratios. This composite material has emergent properties where the trehalose-protein complex exhibits enhanced thermal and chemical stability compared to the protein alone, enabling ambient temperature storage while maintaining bioactivity
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
LAD enables the preservation of biological materials at elevated temperatures, increasing shelf life and reducing bioactivity while maintaining structural integrity and functionality, offering a more efficient and cost-effective alternative to traditional cold storage methods.
Implementation Method 1
uses near-infrared laser radiation to form an amorphous trehalose solid matrix, allowing for the preservation of biological materials at ambient temperatures by selectively heating water to overcome evaporative cooling and speed dehydration
Data Source
AI summary
Methods and compositions of storing a biological material are described herein, including methods and compositions of storing multiple biological material samples simultaneously. In some embodiments, these methods provide one or more advantages over current methods. For example, methods described herein can be used to prepare and process biological materials for storage at elevated temperatures. In one aspect, a method of storing a biological material comprises providing a preservation composition and exposing the preservation composition to electromagnetic radiation to form an amorphous solid matrix containing the biological material. In some embodiments, the method further comprises monitoring temperature of the preservation composition during the exposure to the electromagnetic radiation.