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Natural Antibiotics vs. Pharmaceutical Antibiotics

CSEF · 2002 Microbiology

Kelsey L. Capron · San Juan Elementary School, San Juan Bautista

Overview

Objectives/Goals My objective was to learn if natural antibiotics or pharmaceutical antibiotics are more effective on slowing bacteria growth. Methods/Materials I cultured bacteria from my mouth, then measured and compared the zones of inhibion of natural and pharmaceutical antibiotics. I used 5 different natural antibiotics: Usnea, garlic, onion, white sage, and osha. I used 5 different pharmaceutical antibiotics: Ampicillin, erythromyacin, neomycin, streptomycin, tetracycline, and kanamycin. Results Pharmaceutical antibiotics worked more consistantly than natural antibiotics, however, garlic averaged the widest zones of inhibion. Although garlic averaged the widest zone of inhibion (1.58 cm.), ampicillin and tetracycline were very close (1.47 cm.) Conclusions/Discussion My conclusion is that pharmaceutical antibiotics are more reliable, therefor more useful.

Summary statement

I tested natural antibiotics against pharmaceutical antibiotics to find out which is more effective on reducing the growth of bacteria.

Help received

Father helped make incubator; father gave advice on graphs.

Competition history

  • CSEF 2002 Microbiology · Entry J1304

Resources

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