Fungal Extract Synthesis of Copper Nanoparticles
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Solution Overview
Problem
Current methods for synthesizing metal nanoparticles lack eco-friendly and cost-effective solutions, particularly for producing copper nanoparticles suitable as antimicrobial agents.
Innovation Solution
A method involving the combination of an aqueous metal salt solution with a fungal extract, specifically using copper sulfate and an aqueous extract of manglicolous fungi like Ascocylindrica marina, to produce copper nanoparticles with diameters ranging from 5 nm to 100 nm, which can be used as antimicrobial agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional chemical methods are used to synthesize metal nanoparticles, then production efficiency is improved, but environmental harm and toxicity increase
Solution Approach 1:
The patent introduces fungal extract as an intermediary substance that mediates the synthesis of copper nanoparticles. The fungal metabolites act as reducing agents and capping agents, enabling nanoparticle formation without harsh chemicals. This intermediary approach maintains production efficiency while eliminating environmental harm associated with conventional chemical methods.
Solution Approach 2:
The patent converts the potentially harmful fungal metabolites into beneficial reducing agents that safely synthesize copper nanoparticles. Instead of using toxic chemical reducing agents, the method utilizes natural fungal secondary metabolites that are environmentally benign, thereby converting a potential harm into a benefit for green synthesis.
2Quantity of substance
If conventional chemical synthesis methods are used, then nanoparticle production is achieved, but cost-effectiveness deteriorates
Solution Approach 1:
The patent employs fungal extract that contains all necessary components for nanoparticle synthesis - reducing agents, stabilizing agents, and capping agents - within a single biological extract. This self-service approach eliminates the need for multiple separate chemical reagents and complex synthesis protocols, thereby reducing costs while maintaining nanoparticle production quantity.
Solution Approach 2:
The patent changes the synthesis parameters from conventional chemical conditions to biological conditions using fungal extract. This parameter change includes using physiological pH ranges, ambient temperatures, and natural reducing potentials, which reduces the need for expensive equipment and energy consumption, thereby improving cost-effectiveness while maintaining production quantity.
3Object-affected harmful factors
If fungal extract is used for nanoparticle synthesis, then eco-friendliness is improved, but synthesis complexity increases
Solution Approach 1:
The patent utilizes fungal extract that performs multiple functions simultaneously: it acts as a reducing agent to convert metal salts to nanoparticles, as a stabilizing agent to prevent aggregation, and as a capping agent to control particle size and shape. This multi-functionality simplifies the overall synthesis process while maintaining eco-friendliness, as a single extract replaces multiple separate chemical treatments.
4Reliability
If metal nanoparticles are synthesized for antimicrobial use, then antibacterial efficacy is improved, but potential toxicity to non-target organisms increases
Solution Approach 1:
The patent applies local quality by using fungal metabolites that selectively cap and stabilize copper nanoparticles, creating particles with specific surface properties that enhance antibacterial efficacy while reducing non-specific toxicity. The fungal extract modifies the local surface chemistry of the nanoparticles to improve their interaction with bacterial cells while being safer for non-target organisms.
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 provides a green, simple, and scalable synthesis of copper nanoparticles effective as antimicrobial agents, inhibiting both antibiotic-susceptible and resistant bacterial strains with minimal inhibitory concentrations ranging from 150 to 300 μg/mL.
Implementation Method 1
combining the aqueous metal salt solution with a fungal extract to produce the metal nanoparticles
Data Source
AI summary
A method of preparing metal nanoparticles using a fungal extract includes providing an aqueous solution including a metal salt; and combining the fungal extract with the aqueous metal salt solution to produce the metal nanoparticles. The fungal extract can be an aqueous extract of the manglicolous fungi The metal salt can be copper sulfate (CuSO4) and the metal nanoparticles can be copper nanoparticles. The metal nanoparticles can have a mean diameter in the range of from about 5 nm to about 100 nm. The copper nanoparticles can be used as an antimicrobial agent.