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Antibiotic activity of natural products: 1. Propolis
W Brumfitt1, J M Hamilton-Miller, I Franklin
1Department of Medical Microbiology, Royal Free Hospital, Hampstead, London, Great Britain.
Microbios
|January 1, 1990
Abstract:
Material extracted from propolis (bee glue) by alkaline aqueous solvents or organic solvents showed weak inhibitory activity in vitro against certain species of Gram-positive bacteria. No antimicrobial activity was detected in urine from three volunteers who had taken 500 mg propolis three times a day for 3 days.