Paper-Based Airborne Bacteria Collection and DNA Extraction Kit

The critical risk from airborne infectious diseases, bio-weapons, and harmful bacteria is currently the highest it has ever been in human history. The requirement for monitoring airborne pathogens has gradually increased to defend against bioterrorism or prevent pandemics, especially via simple and low-cost platforms which can be applied in resource-limited settings. Here, we developed a paper-based airborne bacteria collection and DNA extraction kit suitable for simple application with minimal instruments. Airborne sample collection and DNA extraction for PCR analysis were integrated in the paper kit. We created an easy-to-use paper-based air monitoring system using 3D printing technology combined with an air pump. The operation time of the entire process, comprising air sampling, bacterial cell lysis, purification and concentration of DNA, and elution of the DNA analyte, was within 20 min. All the investigations and optimum settings were tested in a custom-designed closed cabinet system. In the fabricated cabinet system, the paper kit operated effectively at a temperature of 25-35 & DEG;C and 30-70% relative humidity for air containing 10-10(6) CFU Staphylococcus aureus. This paper kit could be applied for simple, rapid, and cost-effective airborne pathogen monitoring.

Automated summary

The paper-based airborne bacteria collection and DNA extraction kit developed in this study offers a simple, rapid, and cost-effective method for monitoring airborne pathogens. With the integration of 3D printing technology and an air pump, the entire operation process can be completed within 20 minutes, making it suitable for use in resource-limited settings. The effectiveness of the paper kit was demonstrated under specific conditions, showing potential for widespread application in monitoring airborne pathogens efficiently.