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Antibacterial activity of GUAVA, Psidium guajava Linnaeus, leaf extracts on diarrhea-causing enteric bacteria isolated from Seabob shrimp, Xiphopenaeus kroyeri (Heller).
Rev Inst Med Trop Sao Paulo. 2008 Jan-Feb; 50(1):11-5.RI

Abstract

Guava leaf tea of Psidium guajava Linnaeus is commonly used as a medicine against gastroenteritis and child diarrhea by those who cannot afford or do not have access to antibiotics. This study screened the antimicrobial effect of essential oils and methanol, hexane, ethyl acetate extracts from guava leaves. The extracts were tested against diarrhea-causing bacteria: Staphylococcus aureus, Salmonella spp. and Escherichia coli. Strains that were screened included isolates from seabob shrimp, Xiphopenaeus kroyeri (Heller) and laboratory-type strains. Of the bacteria tested, Staphylococcus aureus strains were most inhibited by the extracts. The methanol extract showed greatest bacterial inhibition. No statistically significant differences were observed between the tested extract concentrations and their effect. The essential oil extract showed inhibitory activity against S. aureus and Salmonella spp. The strains isolated from the shrimp showed some resistance to commercially available antibiotics. These data support the use of guava leaf-made medicines in diarrhea cases where access to commercial antibiotics is restricted. In conclusion, guava leaf extracts and essential oil are very active against S. aureus, thus making up important potential sources of new antimicrobial compounds.

Authors+Show Affiliations

Gonçalves FA
Instituto de Ciências do Mar, UFC, Ceará, Brazil.
Andrade Neto M
No affiliation info available
Bezerra JN
No affiliation info available
Macrae A
No affiliation info available
Sousa OV
No affiliation info available
Fonteles-Filho AA
No affiliation info available
Vieira RH
No affiliation info available

MeSH

AnimalsAnti-Bacterial AgentsEscherichia coliHumansMicrobial Sensitivity TestsPenaeidaePlant ExtractsPlant LeavesPlant OilsPsidiumSalmonellaStaphylococcus aureus

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18327481

Citation

Gonçalves, Flávia A., et al. "Antibacterial Activity of GUAVA, Psidium Guajava Linnaeus, Leaf Extracts On Diarrhea-causing Enteric Bacteria Isolated From Seabob Shrimp, Xiphopenaeus Kroyeri (Heller)." Revista Do Instituto De Medicina Tropical De Sao Paulo, vol. 50, no. 1, 2008, pp. 11-5.
Gonçalves FA, Andrade Neto M, Bezerra JN, et al. Antibacterial activity of GUAVA, Psidium guajava Linnaeus, leaf extracts on diarrhea-causing enteric bacteria isolated from Seabob shrimp, Xiphopenaeus kroyeri (Heller). Rev Inst Med Trop Sao Paulo. 2008;50(1):11-5.
Gonçalves, F. A., Andrade Neto, M., Bezerra, J. N., Macrae, A., Sousa, O. V., Fonteles-Filho, A. A., & Vieira, R. H. (2008). Antibacterial activity of GUAVA, Psidium guajava Linnaeus, leaf extracts on diarrhea-causing enteric bacteria isolated from Seabob shrimp, Xiphopenaeus kroyeri (Heller). Revista Do Instituto De Medicina Tropical De Sao Paulo, 50(1), 11-5.
Gonçalves FA, et al. Antibacterial Activity of GUAVA, Psidium Guajava Linnaeus, Leaf Extracts On Diarrhea-causing Enteric Bacteria Isolated From Seabob Shrimp, Xiphopenaeus Kroyeri (Heller). Rev Inst Med Trop Sao Paulo. 2008 Jan-Feb;50(1):11-5. PubMed PMID: 18327481.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antibacterial activity of GUAVA, Psidium guajava Linnaeus, leaf extracts on diarrhea-causing enteric bacteria isolated from Seabob shrimp, Xiphopenaeus kroyeri (Heller). AU - Gonçalves,Flávia A, AU - Andrade Neto,Manoel, AU - Bezerra,José N S, AU - Macrae,Andrew, AU - Sousa,Oscarina Viana de, AU - Fonteles-Filho,Antonio A, AU - Vieira,Regine H S F, PY - 2007/05/22/received PY - 2007/11/09/accepted PY - 2008/3/11/pubmed PY - 2008/6/20/medline PY - 2008/3/11/entrez SP - 11 EP - 5 JF - Revista do Instituto de Medicina Tropical de Sao Paulo JO - Rev Inst Med Trop Sao Paulo VL - 50 IS - 1 N2 - Guava leaf tea of Psidium guajava Linnaeus is commonly used as a medicine against gastroenteritis and child diarrhea by those who cannot afford or do not have access to antibiotics. This study screened the antimicrobial effect of essential oils and methanol, hexane, ethyl acetate extracts from guava leaves. The extracts were tested against diarrhea-causing bacteria: Staphylococcus aureus, Salmonella spp. and Escherichia coli. Strains that were screened included isolates from seabob shrimp, Xiphopenaeus kroyeri (Heller) and laboratory-type strains. Of the bacteria tested, Staphylococcus aureus strains were most inhibited by the extracts. The methanol extract showed greatest bacterial inhibition. No statistically significant differences were observed between the tested extract concentrations and their effect. The essential oil extract showed inhibitory activity against S. aureus and Salmonella spp. The strains isolated from the shrimp showed some resistance to commercially available antibiotics. These data support the use of guava leaf-made medicines in diarrhea cases where access to commercial antibiotics is restricted. In conclusion, guava leaf extracts and essential oil are very active against S. aureus, thus making up important potential sources of new antimicrobial compounds. SN - 0036-4665 UR - https://www.unboundmedicine.com/medline/citation/18327481/Antibacterial_activity_of_GUAVA_Psidium_guajava_Linnaeus_leaf_extracts_on_diarrhea_causing_enteric_bacteria_isolated_from_Seabob_shrimp_Xiphopenaeus_kroyeri__Heller__ DB - PRIME DP - Unbound Medicine ER -