Category: Health Science
Author: Akshith Duvvi
Grade: 11th
Publish Date: Jan. 5, 2026, 5:22 p.m.
Description: This study investigates the antibacterial effects of garlic (Allium sativum) extract against household bacteria collected from contaminated surfaces such as toilet seats and door handles. The objective was to compare the effect of garlic extract at three concentrations (low, medium, and high) with a standard antibiotic, azithromycin. Agar plates were inoculated with bacterial samples, and sterile discs infused with either garlic extract or azithromycin were applied. Zones of inhibition were measured to assess antimicrobial activity. Results showed that garlic produced a concentration-dependent inhibitory effect, with larger inhibition zones at higher concentrations. However, azithromycin consistently demonstrated greater antibacterial activity than garlic. These findings suggest that while garlic exhibits measurable antimicrobial properties against diverse household bacteria, its effectiveness is lower than that of a broad-spectrum antibiotic. Garlic may thus hold potential as a natural supplementary antimicrobial agent, but it is not a substitute for conventional antibiotics
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