Rapid Microbial Strain Screening via Carrier Worm Digestion
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Solution Overview
Problem
Current methods for recycling polystyrene foam are inefficient and can generate toxic gases, and existing research on biodegradation requires weeks to screen for degrading microbial strains, necessitating a quicker screening method.
Innovation Solution
A quick screening method involving feeding carrier worms like Tenebrio molitor or Zophobas with polystyrene foam for several days, sampling their digestive systems, and culturing them in a medium containing an emulsion made with chloroform-dissolved polystyrene foam and a surfactant like dishwasher detergent, which facilitates the rapid identification of degrading strains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If heat treating is used to recycle STYROFOAM, then polystyrene particles can be obtained for processing, but toxic gases such as dioxin are generated causing environmental harm
Solution Approach 1:
The invention converts the harmful effect of heat treatment into a beneficial biological process. Instead of using thermal energy that produces toxic gases, the patent employs microbial strains that naturally degrade polystyrene foam through enzymatic action, transforming a harmful chemical process into a safe biological one that produces no toxic emissions
Solution Approach 2:
The invention replaces the mechanical/thermal recycling system with a biological system. Rather than applying heat and mechanical force to process STYROFOAM, the patent uses living microbial organisms and their digestive systems to break down the material, substituting a chemical-physical process with a biological one that avoids toxic byproducts
2Measurement precision
If conventional strain screening methods are used to identify STYROFOAM degrading strains, then degrading strains can be found, but weeks of observation are required reducing research efficiency
Solution Approach 1:
The invention performs preliminary action by pre-collecting and enriching STYROFOAM-degrading strains within the digestive systems of carrier worms before screening. This pre-enrichment step ensures that when the digestive content is plated on selective media, degrading strains are already present in sufficient quantities to be rapidly identified, eliminating the need for long observation periods
Solution Approach 2:
The invention introduces carrier worms as an intermediary organism to facilitate strain screening. These worms naturally consume and harbor STYROFOAM-degrading microbes in their digestive tracts, serving as a living culture vessel that concentrates the target strains and makes them easily accessible for isolation and identification, dramatically accelerating the screening process
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 allows for the rapid screening and identification of polystyrene foam degrading strains, reducing the time required for research and development, while avoiding the environmental hazards associated with heat treatment.
Implementation Method 1
adding a surfactant containing a second basal medium to the dissolved STYROFOAM (polystyrene foam), and evaporating the chloroform. Herein, the surfactant is preferably a dishwasher detergent (e.g. SALATT).
Implementation Method 2
The culture medium includes agar, an emulsion, a yeast extract solution, and a first basal medium. The emulsion is formed by dissolving the STYROFOAM (polystyrene foam) with chloroform, adding a surfactant containing a second basal medium to the dissolved STYROFOAM (polystyrene foam), and evaporating the chloroform.
Implementation Method 3
The emulsion is formed by dissolving the STYROFOAM (polystyrene foam) with chloroform, adding a surfactant containing a second basal medium to the dissolved STYROFOAM (polystyrene foam), and evaporating the chloroform.
Implementation Method 4
The digestive system of the carrier worm includes at least one STYROFOAM (polystyrene foam) degrading strain. Presently, many research institutions have been focusing on biodegradation of STYROFOAM (polystyrene foam).
Data Source
AI summary
A quick screening method for microbial strains includes the steps of: feeding a carrier worm with Styrofoam for a plurality of days; and sampling a digestive system of the carrier worm and placing the sampled digestive system of the carrier worm into a culture medium. The digestive system of the carrier worm includes at least one Styrofoam degrading microbial strain. The culture medium includes an emulsion formed by dissolving the Styrofoam with chloroform and adding a surfactant to the dissolved Styrofoam. A culture medium for fast culturing of the at least one microbial strain is also provided.