Atividade antimicrobiana dos extratos de Schinus terebinthifolia Raddi
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Data
2013-11-29
Autores
Rebello, Luciana Camizão
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Universidade Federal do Espírito Santo
Resumo
The Schinus terebinthifolia Raddi, popularly known as pepper tree, is in the National
Medicinal Plants of the SUS’s Interest List and has great potential for growth
inhibition of microorganisms, which makes this an alternative to medicinal plant
antimicrobial activity. This study aims to evaluate the antimicrobial activity against
pathogenic fungi (Colletotrichum gloeosporioides Penz and Colletotrichum musae)
and against the bacteria which causes human infection (Staphylococcus aureus),
from the extracts fractions obtained from leaves and stem bark of S. terebinthifolia, to
identify secondary metabolic compounds in leaves and stem bark and quantify the
compounds of the flavonoids group. The extractions of leaves and stem bark were
prepared by maceration using increasing polarity solvents (hexane, dichloromethane
and ethanol) and ethanol solvent for the preparation of crude extract that underwent
liquid-liquid cut. The phytochemical screening of crude ethanol extracts of both
parties and the quantification of flavonoids were performed. The fractions were tested
for determining the minimum inhibitory concentration for bacteria and for mycelial
growth inhibition of the fungus. The results showed that all tested microorganisms
demonstrated sensitivity to the compounds found in the extracts of S. terebinthifolia
regardless the type of extraction, and that the flavonoids are found in greater
amounts in the leaves (52,93 µg.mL-1) than in the stem bark (9.58 µg.mL-1), possibly,
together with tannins, they do the inhibitory activity of fungi and bacteria. Therefore,
extracts of bark stem and leaves of the pepper tree may be a good way for
controlling the growth of these pathogen and they can act as an herbal medicine with
antibiotic effect as well as being a possible agent to control the diseases in papaya
and banana plants.
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Palavras-chave
Anthracnose , Antibiotic , Schinus terebinthifolia
Citação
REBELLO, Luciana Camizão. Atividade antimicrobiana dos extratos de Schinus terebinthifolia Raddi. 2013. 48 f. Dissertação (Mestrado em Agricultura Tropical) - Programa de Pós-Graduação em Agricultura Tropical, Universidade Federal do Espírito Santo, São Mateus, 2013.