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Antimicrobial activities of eucalyptus leaf extracts and flavonoids from Eucalyptus maculata.
Lett Appl Microbiol. 2004; 39(1):60-4.LA

Abstract

AIMS

We investigated the antimicrobial activities of eucalyptus leaf extracts to find effective antibacterial agents.

METHODS AND RESULTS

The antimicrobial activities of leaf extracts from 26 species of eucalyptus were measured. Extracts of Eucalyptus globulus, E. maculata and E. viminalis significantly inhibited the growth of six Gram-positive bacteria (Staphylococcus aureus, MRSA, Bacillus cereus, Enterococcus faecalis, Alicyclobacillus acidoterrestris, Propionibacterium acnes), and of a fungus (Trichophyton mentagrophytes), but they did not show strong antibacterial activity against Gram-negative bacteria (Escherichia coli, Pseudomonas putida). 2',6'-dihydroxy-3'-methyl-4'-methoxy-dihydrochalcone, eucalyptin and 8-desmethyl-eucalyptin, isolated from E. maculata extracts, exhibited potent antimicrobial activities against seven micro-organisms with minimum inhibitory concentrations (MIC) ranging from 1.0 to 31 mg l(-1).

CONCLUSIONS

The eucalyptus extracts and three compounds from E. maculata were found to be effective against micro-organisms that cause food poisoning, acne and athlete's foot.

SIGNIFICANCE AND IMPACT OF THE STUDY

This study shows potential uses of extracts from E. globulus, E. maculata and E. viminalis, and antimicrobial compounds isolated from E. maculata.

Authors+Show Affiliations

Advanced Technology Research Laboratory, Oji Paper Co., Ltd, Shinonome, Koto-ku, Tokyo, Japan. tetsunari-takahashi@ojipaper.co.jpNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

15189289

Citation

Takahashi, T, et al. "Antimicrobial Activities of Eucalyptus Leaf Extracts and Flavonoids From Eucalyptus Maculata." Letters in Applied Microbiology, vol. 39, no. 1, 2004, pp. 60-4.
Takahashi T, Kokubo R, Sakaino M. Antimicrobial activities of eucalyptus leaf extracts and flavonoids from Eucalyptus maculata. Lett Appl Microbiol. 2004;39(1):60-4.
Takahashi, T., Kokubo, R., & Sakaino, M. (2004). Antimicrobial activities of eucalyptus leaf extracts and flavonoids from Eucalyptus maculata. Letters in Applied Microbiology, 39(1), 60-4.
Takahashi T, Kokubo R, Sakaino M. Antimicrobial Activities of Eucalyptus Leaf Extracts and Flavonoids From Eucalyptus Maculata. Lett Appl Microbiol. 2004;39(1):60-4. PubMed PMID: 15189289.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antimicrobial activities of eucalyptus leaf extracts and flavonoids from Eucalyptus maculata. AU - Takahashi,T, AU - Kokubo,R, AU - Sakaino,M, PY - 2004/6/11/pubmed PY - 2004/9/4/medline PY - 2004/6/11/entrez SP - 60 EP - 4 JF - Letters in applied microbiology JO - Lett Appl Microbiol VL - 39 IS - 1 N2 - AIMS: We investigated the antimicrobial activities of eucalyptus leaf extracts to find effective antibacterial agents. METHODS AND RESULTS: The antimicrobial activities of leaf extracts from 26 species of eucalyptus were measured. Extracts of Eucalyptus globulus, E. maculata and E. viminalis significantly inhibited the growth of six Gram-positive bacteria (Staphylococcus aureus, MRSA, Bacillus cereus, Enterococcus faecalis, Alicyclobacillus acidoterrestris, Propionibacterium acnes), and of a fungus (Trichophyton mentagrophytes), but they did not show strong antibacterial activity against Gram-negative bacteria (Escherichia coli, Pseudomonas putida). 2',6'-dihydroxy-3'-methyl-4'-methoxy-dihydrochalcone, eucalyptin and 8-desmethyl-eucalyptin, isolated from E. maculata extracts, exhibited potent antimicrobial activities against seven micro-organisms with minimum inhibitory concentrations (MIC) ranging from 1.0 to 31 mg l(-1). CONCLUSIONS: The eucalyptus extracts and three compounds from E. maculata were found to be effective against micro-organisms that cause food poisoning, acne and athlete's foot. SIGNIFICANCE AND IMPACT OF THE STUDY: This study shows potential uses of extracts from E. globulus, E. maculata and E. viminalis, and antimicrobial compounds isolated from E. maculata. SN - 0266-8254 UR - https://www.unboundmedicine.com/medline/citation/15189289/Antimicrobial_activities_of_eucalyptus_leaf_extracts_and_flavonoids_from_Eucalyptus_maculata_ L2 - https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0266-8254&date=2004&volume=39&issue=1&spage=60 DB - PRIME DP - Unbound Medicine ER -