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Which Cutting Board Is Easiest to Sanitize?

CSEF · 2002 Materials Science (Junior Division Only)

Kristina Brooks, Kyla Price · Standard Middle School, Bakersfield

Overview

Objectives/Goals Objective: The goal of our project is to determine which cutting board is easiest to sanitize. Methods/Materials Materials and Method: We mixed a stock solution of nutrient broth and added E.coli. We put 5 ml of the mixture onto one cutting board at a time. We swabbed them onto nutrient agar (bacteria food) with a sterilized Q-tip. We then rinsed each cutting board with a 90mlwater/10ml bleach mixture. After rinsing, we swabbed each board as before. Then, after 24 hours we counted each colony of E.coli. Results Result: As a result we found in our 1st trail that the stainless steel was the easiest to sanitize; however in our second trial we found that corian was the easiest to sanitize. Conclusions/Discussion Conclusion: In conclusion, we found that the corian and stainless steel cutting boards were the easiest to sanitize. The wood and poly were the hardest for the bleach to reach so they were the hardest to sanitize.

Summary statement

The material that the cutting board is made of determines how easily it is to sanitize.

Help received

We received help from our science teacher, Mr. Steve Duerr. He helped with the design of the experiment and he helped us make our graphs in Microsoft Excel. Also, our language arts teacher, Mrs. Erica Andrews, helped edit our report.

Competition history

  • CSEF 2002 Materials Science (Junior Division Only) · Entry J1105

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