The Effects of Low Frequency Noise on the Growth and Resistance to Antibiotics of Soil Bacteria and E. Coli

다국어 초록 (Multilingual Abstract)

In today's mechanized society, low frequency noises are ubiquitous. Though much research has been conducted on the effects of low frequency sound waves on human health and emotion, little research has been conducted on their impact on plants and bacteria. This research sought to determine the effects of low frequency noise on soil bacteria and E. coli. Initially, changes in growth and amounts of both bacteria under low frequency noise were measured, but no significant and definite alterations in the E. coli growth were observed. Then, the resistance of bacteria was tested by adding hydrogen peroxide, which yield harmful reactive oxygen species, to the soil bacteria and E. coli solutions, of which some were exposed to LFN (low frequency noise) while other control groups were not. The results showed that the bacterial solutions exposed to LFN were less affected by the hydrogen peroxide, indicating that LFN may have induced the secretion of chemical compounds, such as Superoxide dismutase that react with the reactive oxygen species to create new harmless compounds. It has therefore been concluded that LFN may strengthen the resistance of bacteria, and that certain measures, especially for harmful bacteria, should be taken in order to prevent increased resistance.

목차 (Table of Contents)

• ABSTRACT
• INTRODUCTION
• MATERIALS AND METHODS
• Experimental Design and Separation of Soil Bacteria
• Low Frequency Noise Exposure on Bacteria
• Addition of LFN exposed soil bacteria to soil of plant
• LFN Induced Resistance of Soil Bacteria and E. coli
• RESULTS
• Effect of LFN on Bacterial Growth
• Effect of Exposed Soil Bacteria on Plants
• LFN Induced Changes in Bacteria Resistance
• DISCUSSION AND CONCLUSION
• REFERENCES