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An ultrasonic biosample disruptor with two triangular teeth on its radiation face.

Jia Yin1, Huiyu Huang1, Mojing Zheng2

  • 1State Key Lab of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China.

Biotechnology Journal
|November 27, 2023
PubMed
Summary

A novel ultrasonic biosample disruptor (UBD) design with triangular teeth enhances energy efficiency and fragmentation performance for algal cells and DNA. This improved UBD offers better control over DNA fragment length, crucial for molecular biology applications.

Keywords:
DNAfragmentationspirulinatribonemaultrasound

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Area of Science:

  • Biotechnology
  • Acoustic Engineering
  • Molecular Biology

Background:

  • Ultrasound is utilized for biosample disruption, including algal cells and DNA fragmentation.
  • Existing ultrasonic biosample disruptors (UBD) face limitations in energy efficiency.
  • Optimizing UBD structure is essential for enhanced performance.

Purpose of the Study:

  • To propose and evaluate a novel UBD structure designed to improve acoustic energy utilization and fragmentation performance.
  • To investigate the concentration of acoustic energy using a new UBD design.
  • To experimentally validate the enhanced fragmentation capabilities of the proposed UBD.

Main Methods:

  • Finite Element Method (FEM) computation to verify acoustic energy concentration.
  • Experimental disruption of Spirulina and Tribonema using the proposed and traditional UBDs.
  • Analysis of DNA fragment length distribution and size proportions.

Main Results:

  • The proposed UBD concentrates acoustic energy into a specific slot, validated by FEM.
  • Experimental results show increased proportions of desired fragments (10-20 μm) for both algal samples.
  • The new UBD yields significantly smaller standard deviation in DNA fragment length (47 bp vs. 249 bp) compared to the traditional UBD.

Conclusions:

  • The novel UBD design with triangular teeth demonstrates superior acoustic energy utilization and fragmentation efficiency.
  • This UBD offers improved control over DNA fragment size, indicated by a reduced standard deviation.
  • The findings suggest potential for more efficient and precise biosample processing in molecular biology.