Plant Cell Synthesis of Metallic Nanoparticles
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Solution Overview
Problem
Conventional methods for synthesizing gold nanoparticles, such as physical and chemical methods, are expensive, laborious, and environmentally hazardous, and they struggle with controlling nanoparticle shape and size, limiting their utility.
Innovation Solution
The method involves using a plant cell suspension medium to synthesize metallic nanoparticles by adding a metal salt solution to the plant cells, where the nanoparticles are formed, and then isolating them using techniques like sonication, centrifugation, and chromatography.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If physical methods (evaporation, laser ablation) are used to synthesize gold nanoparticles, then nanoparticle production is achieved, but the process becomes expensive and laborious
Solution Approach 1:
The patent employs plant cell suspension cultures that autonomously synthesize gold nanoparticles through their metabolic processes. The plant cells self-reduce gold ions to metallic gold nanoparticles without requiring external physical intervention, equipment, or complex procedures, thereby eliminating the expensive and laborious physical methods while maintaining high production efficiency
Solution Approach 2:
The patent replaces mechanical/physical synthesis methods (evaporation, laser ablation) with a biological chemical reduction process. Plant cells in suspension culture naturally reduce gold ions through their metabolic activities, substituting complex mechanical equipment and procedures with a simple biological system that is easier to manufacture and more productive
2Productivity
If chemical methods are used to synthesize gold nanoparticles, then nanoparticle production is achieved, but strong reducing agents are required which are potentially hazardous to the environment
Solution Approach 1:
The patent converts the potential harm of chemical reduction by using plant cells as biological reducing agents. Instead of using hazardous strong chemical reducing agents, the plant cells' natural metabolic processes perform the reduction, transforming a potentially harmful chemical process into an environmentally benign biological process while maintaining nanoparticle production capability
Solution Approach 2:
The patent introduces plant cells as an intermediary between gold ions and the reduced metallic gold nanoparticles. The plant cells act as a mediator that performs the reduction function through their metabolic activities, replacing direct chemical reduction with a biological intermediary process that eliminates environmental hazards while preserving productivity
3Object-affected harmful factors
If whole plants are used for nanomaterial fabrication, then an eco-friendly alternative is provided, but the ability to isolate nanoparticles, control shape and size is limited
Solution Approach 1:
The patent segments the plant system from whole plants to isolated cell suspension cultures. This segmentation allows the nanoparticles to be produced in a controlled liquid medium where they can be easily isolated through centrifugation or filtration, while the cell suspension provides sufficient biological control over nanoparticle shape and size through metabolic regulation
Solution Approach 2:
The patent employs dynamic cell suspension cultures that can be actively controlled and manipulated. The suspension culture system allows for real-time adjustment of growth conditions, nutrient composition, and gold ion concentration, enabling dynamic control over nanoparticle synthesis parameters to achieve desired shape and size while maintaining environmental friendliness
4Productivity
If conventional physical or chemical methods are used, then gold nanoparticles are produced, but control over nanoparticle morphology and size is limited
Solution Approach 1:
The patent utilizes parameter changes in the plant cell suspension system to control nanoparticle morphology and size. By adjusting parameters such as gold ion concentration, nutrient composition, pH, temperature, and cell culture conditions, the plant cells' metabolic processes are modulated to produce nanoparticles with controlled shape and size while maintaining high synthesis capability
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 approach provides an eco-friendly method for producing gold nanoparticles with controlled morphology and size, achieving properties suitable for various biomedical and pharmaceutical applications, including catalysis and drug delivery.
Implementation Method 1
adding at least one metal salt solution comprising a metal salt to the plant cell suspension, forming metallic nanoparticles
Implementation Method 2
isolating the metallic nanoparticles from the plant cell suspension by at least one of sonication or centrifugation
Implementation Method 3
isolating the metallic nanoparticles from the plant cell suspension by at least one of sonication or centrifugation
Implementation Method 4
isolating the metallic nanoparticles from the plant cell suspension by at least one of sonication or centrifugation, and at least one of a gel filtration column or molecular sieve chromatography
Data Source
AI summary
The invention relates to metallic nanoparticles made by that have been made in a plant cell suspension, and methods of making the metallic particles.