2011, Number 4
Evaluation of the bactericidal action of essential oils from guava, Surinam cherry and strawberry guava
Language: Spanish
References: 13
Page: 324-330
PDF size: 92.12 Kb.
ABSTRACT
Introduction: Guava, Surinam cherry and strawberry guava are native South American fruit trees and the tea from their leaves is traditionally used to treat diarrhea.Objective: to evaluate the antimicrobial action of Psidium guajava L., Eugenia uniflora L. and Psidium cattleyanum Sabine and their constituents. Methods: the essential oils were extracted by a modified Clevenger. The analysis of essential oils was performed on chromatograph (GC/MS). The antimicrobial activity of obtained oils against Escherichia coli, Salmonella typhimurium and Staphylococcus aureus was evaluated by broth microdilution assay to determine their minimum bactericidal concentration.
Results:/b> the guava oil showed bactericidal activity against E. coli at 2 % and 8 % concentration rates against S. aureus and S. typhimurium. The strawberry guava oil showed no bactericidal activity against tested microorganisms whereas Surinam cherry had bactericidal activity at 8 % concentration against S. aureus and S. typhimurium. The main constituents commonly found in the three plant oils were a-copaene and a-humulene.
Conclusions: the oils showed bactericidal activity against tested microorganisms and the constituents are comparable to those found in other studies.
REFERENCES
Schuch L, Wiest J, Coimbra, H, Prestes LS, De Toni L, Lemos J. Cinética da Atividade Antibacteriana in vitro de Extratos Naturais frente a microrganismos relacionados à mastite bovina. Ciência Animal Brasileira. 2008 [Acesso em: 27 Jun 2009];9(1);161-9. Disponível em: http://www.revistas.ufg.br/ index.php/vet/article/view/968
Prestes LS, Frascolla RV, Santin R, Santos MAS, Schramm RC, Rodrigues MRA, et al. Actividad de extractos de orégano y tomillo frente a microorganismos asociados com otitis externa. Rev Cubana Plant Med. 2008 [citado 16 Jun 2009];13(4) Disponíble en: http://bvs.sld.cu/revistas/pla/vol13_4_08/pla03408.htm
Lima RK, Cardoso MG, Santos CD, Moraes JC, Néri DKP, Nascimento EA. Caracterização química do óleo essencial de folhas de goiabeira (Psidium guajava L.) e seus efeitos no comportamento da lagarta-do-cartucho do milho Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae). Ciênc Agrotec. 2009;33(Sup):1777-81.