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KMID : 0848120140390040201
International Journal of Oral Biology
2014 Volume.39 No. 4 p.201 ~ p.206
Antimicrobial Activity of Mulberry Leaf against Mutans Streptococci and Periodontopathogens
Park Soon-Nang

Lim Yun-Kyong
Cho Eu-Gene
Jo Eo-Jin
Park Pyoung-Sim
Kook Joong-Ki
Abstract
This study investigated the antimicrobial activity of methanol extract of mulberry leaf against 16 strains of mutans streptococci and four species of periodontopathogens: Porphyromonas gingivalis, Prevotella intermedia, Fusobacterium nucleatum, and Aggregatibacter actinomycetemcomitans. The antimicrobial activities of the crude extracts or silica gel chromatography fractions of methanol-extracted mulberry leaf were evaluated by determining minimal inhibitory concentrations using an established microdilution method. The cytotoxicity of the extracts of mulberry leaf on KB cells was tested by the methyl thiazolyl tetrazolium assay. Chromatography fraction 12 displayed the most potent antimicrobial activity against all 16 strains of mutans streptococci, P. gingivalis, and P. intermedia. No KB cell cytotoxicity was evident up to 128 ¥ìg/ml of fraction 12. The methanol extract had no antimicrobial activity against F. nucleatum and A. actinomycetemcomitans. These results suggest chromatography fraction 12 methanol extract of mulberry leaf could be useful in the development of oral hygiene products, such as dentifrice and oral hygiene solution, for the prevention of dental caries.
KEYWORD
antimicrobial effect , mulberry leaf , mutans streptococci , periodontopathogens
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