Composição química e atividade antimicrobiana de óleos vegetais in natura e ozonizados em Acinetobacter baumannii
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Data
2021
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Universidade Brasil
Resumo
The study of infection control mechanisms caused by bacteria is a topic of interest to
different professionals involved in the hospital environment. This work aimed to
investigate the use of vegetable oils as an alternative treatment in the control of these
infections. The bactericidal effect of canola, coconut and palm oil, in natura and
ozonized oils, was evaluated under Acinetobacter baumannii, a species of bacteria
that stands out as an important opportunistic pathogen and is responsible for infections
related to the care of health. All the tested oil samples were characterized by the
techniques of gas chromatography, I2 and peroxides index, the most altered
characteristic under the effect of the ozonation process, passing from undetectable in
the samples of in natura oils to the fractions 125,7 ± 0,2; 422,4 ± 0,2 and 434,8 ± 0,2
meq/Kg of Na2S2O3
for canola oil, coconut and ozonized palm oil. The reduction of
microbial load in A. baumannii strains was 93,5, 71,6 and 85,9% for canola, coconut
and in natura palm oils, respectively, and 96,2, 93,8 and 91,0% for the oils of canola,
coconut and ozonized palm oil, respectively. In addition, the efficiency in the inhibition
time of A. baumanni showed that ozonized oils present immediate bactericidal action,
where their bacterial count in 10 min equates to the results of in natura oils after 30
min of incubation. These results revealed that the oils tested can be used in the control
of bacterial infections and the ozonization of these oils potentiates the bactericidal
action. The results showed, however, that the comparison between the microbial
counts of in natura and ozonized oils did not point significant differences, since all the
resulting p-values were higher than the level of significance adopted for the
comparative test. A similar result was found in the comparison among ozonized oils in
terms of microbial count, that is, there were no significant differences among
microorganism counts when the different types of ozonized oils were compared.
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Palavras-chave
Acinetobacter baumannii, Ozônio, Atividade bactericida, Plantas medicinais