Investigating How Different Fibers Will Inhibit Bacterial Growth

Overview

Objectives/Goals I want to find out which materials will inhibit bacteria from passing through onto someone's skin. My hypothesis sated that Linen would be the most effective in blocking bacteria Methods/Materials I will make a baterial solution using bacillus substills. I will take this solution and spray from 6 inches away onto different materials that are placed over a petri dish. I will have different trials for each material. For my control I will simply spray from 6 inches directly onto the petri dish. The materials are linen, silk, cotton, and wool. After 10 days I will count how many colonies have grown onto the petri dish. This will be done in a scientfic order. Results I found that silk had the best effect in blocking bacteria from pasing through the material. This wasn't what my hypothesis stated. Linen was the least effective material. Conclusions/Discussion I learned that if you are wearing silk, although not foolproof, silk does help block bacteria from reaching your skin. Linen is very ineffective at protecting you.

Competition history

• CSEF 2004 Materials Science (Junior Division Only) · Entry J1116

Resources

• CSEF project summary ↗

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