African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12496

Full Length Research Paper

Antibacterial activity of crude extracts from Mexican plants against methicillin-resistant Staphylococcus

Rosa del Carmen Rocha-Gracia1, María Miriam Hernández Arroyo1,2, Patricia Lozano Zaraín1, Beatriz Hernández Carlos3, Héctor Santiago Romero3, Ernestina Cedillo Portugal4, María Teresa Zayas Pérez5 and Jesús Francisco López-Olguín6*
1Centro de Investigaciones en Ciencias Microbiológicas, ICUAP, Benemérita Universidad Autónoma de Puebla. Complejo de Ciencias, edificio No. 103 J. Ciudad Universitaria, Colonia San Manuel, 72570 Puebla, México. 2Escuela de Biología, Benemérita Universidad Autónoma de Puebla. 72570 Puebla, México. 3Instituto de Recursos, Universidad del Mar, Puerto Ángel, Oaxaca 70900, México. 4Preparatoria Agrícola, Universidad Autónoma de Chapingo, Chapingo, 56230 Estado de México, México. 5Centro de Química ICUAP, Benemérita Universidad Autónoma de Puebla, 72570 Puebla, México. 6Departamento de Agroecología y Ambiente, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, 72570 Puebla, México.
Email: [email protected], [email protected]

  •  Accepted: 19 August 2011
  •  Published: 10 October 2011

Abstract

The aim of this study was to evaluate the antimicrobial activity of 36 extracts from 18 vegetal species used as soap, insecticides, insect repellent and for the treatment of several diseases likely associated to microorganisms. The vegetal species were collected in Oaxaca, Puebla and Veracruz States, México. The extracts were evaluated against isolates of nosocomial infections ofStaphylococcus aureus and Staphylococcus coagulase negative resistant to Methicillin by a modificated agar diffusion method. The results demonstrate an important antibacterial effect in vitro, against all of the strains of Staphylococcustested mainly with those from Vernonanthura oaxacana, Trixis silvatica, and with those of Perezia hebeclada. The minimum inhibitory concentration for V. oaxacanaand P. hebeclada was 250 µg/disc and for T. silvatica it was 15 µg/disc. These extracts showed an important potential that would contribute to the development of new agents against infections by Staphylococcus.

 

Key words: Crude extracts, antimicrobial activity, intrahospitalary infections, methicillin-resistant Staphylococcus coagulase negative.

Abbreviation

BUAP, Benemérita Universidad Autónoma De Puebla, México;CoNS, coagulase negative Staphylococcus; MIC, minimum inhibitory concentration; MRSA, methicillin resistant Staphylococcus aureus.