Avaliação do potencial de extratos vegetais no controle in vitro de Escherichia coli de origem animal

Resumo

A study was conducted to evaluate the potential of the following species of medicinal plants taken as: lemon grass, vinca, wormwood, aloe, lemon grass, herb santa maria, mint, baru, goat pepper and tanking. The plant extracts were obtained by maceration of the plants, diluted in a water-alcohol solution, incubating for seven days and filtered. For testing in vitro seeding technique of Escherichia coli on the surface of Muller-Hinton agar was conducted, and commercial antibiotic discs as control and filter paper discs soaked in plant extracts were stored. The plates were incubated at 37 ° C for 24h, and the results consis ted in reading the diameters of inhibition of plant extracts and antibiotics, the average diameters were compared by Tukey test at 5% significance. It was observed that strains of E. coli from bovine milk showed low sensitivity to the evaluated plant extracts, while samples of E. coli of avian origin showed 100% sensitivity to herbal extracts, but with inhibition zones below the commercial antimicrobial . It is concluded that at low or no development efficiency of plant extracts of E. coli, may be related to how to prepare the extracts or the method of evaluation, because the literature shows several in vitro studies of various plant extracts on microorganisms however, it is observed that they can be evaluated by several methods for measuring the inhibitory effect, and there is a standard process as there is for antibiotics, which can be established in future research.

Descrição

Palavras-chave

Aves, Bactéria, Bovinos, Plantas medicinais, Birds, Bacteria, Cattle, Medicinal plants

Citação

SOUZA, Winícius Bueno de; ALCÂNTARA, Nayra Rodrigues de; ANDRADE, Maria Auxiliadora; ALMEIDA, Taís Ferreira de; SANTANA, Eliete Souza. Avaliação do potencial de extratos vegetais no controle in vitro de Escherichia coli de origem animal. Enciclopédia Biosfera, Goiânia, v. 10, n. 19, p. 2755-2764, dez. 2014.