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Estudo da eficácia de óleos essenciais na melhoria da qualidade microbiológica do ar interior
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| DM_35993 | 6.26 MB | Adobe PDF |
Advisor(s)
Abstract(s)
A qualidade do ar é um fator essencial para a qualidade de vida e saúde humana. Na
sociedade contemporânea, verifica-se uma preocupação de nível mundial com relação
ao poluentes atmosféricos, químicos e biológicos. O ar interior é em grande parte
proveniente do exterior, e em alguns locais como laboratórios de aulas de
microbiologia, o ar interior encontra-se contaminado com bioaerossois. Os óleos
essenciais que são extratos naturais de plantas aromáticas, têm sido utilizados na
medicina popular há séculos, e há algumas décadas tem cada vez mais despertado o
interesse de investigadores por serem constituídos por compostos com diversas
finalidades como antimicrobiana. O objetivo do trabalho foi avaliar a eficácia dos óleos
essencias na eliminação das bactérias presentes no ar dos laboratórios da Universidade
Fernando Pessoa, usados nas aulas de microbiologia. Pretende-se assim contribuir para
uma melhoria na qualidade microbiológica do ar interior dos laboratórios. Inicialmente
foi realizada uma caracterização dos laboratórios, relativamente ao tipo de bioaerossóis
presentes no ar. Posteriormente, foram colhidas amostras de ar antes de depois de
aplicação da mistura de óleos essenciais. Após a contagem de Unidades Formadoras de
Colónia formadas após incubação dos meios de cultura, cada morfotipo de colónia foi
repicado em meio cromogénico e caracterizado relativamente ao Gram. Os resultados
demonstraram a eficácia do spray de óleos essenciais, sendo que em algumas
amostragens houve uma diminuição superior a 40% no número de UFC. Com isso,
concluímos que a mistura de óleos essenciais utilizada, teve uma boa eficácia e
contribui para a melhoria da qualidade do ar interior.
Air quality is an essential factor for quality of life and human health. In contemporary society, there is a worldwide concern about atmospheric, chemical and biological pollutants. The indoor air is mostly from the outside, and in some places like microbiology class laboratories, the indoor air is contaminated with bioaerosols. Essential oils, which are natural extracts of aromatic plants, have been used in folk medicine for centuries, and for some decades they have increasingly aroused the interest of researchers because they are composed of compounds with different purposes such as antimicrobial. The objective of the work was to evaluate the efficacy of essential oils in the elimination of bacteria present in the air in the laboratories of Universidade Fernando Pessoa, used in microbiology classes. It is intended to contribute to an improvement in the microbiological quality of indoor air in laboratories. Initially a characterization of the laboratories was carried out, regarding the type of bioaerosols present in the air. Subsequently, air samples were collected before applying the mixture of essential oils. After counting the Colony Forming Units formed after incubation of the culture media, each colony morphotype was spiked in a chromogenic medium and characterized in relation to Gram .. The results only demonstrated the effectiveness of the spray of essential oils, and in some samples there was a decrease of more than 40% in the number of UFC. With that, we conclude that the mixture of essential oils used had a good efficiency and contributes to the improvement of indoor air quality.
Air quality is an essential factor for quality of life and human health. In contemporary society, there is a worldwide concern about atmospheric, chemical and biological pollutants. The indoor air is mostly from the outside, and in some places like microbiology class laboratories, the indoor air is contaminated with bioaerosols. Essential oils, which are natural extracts of aromatic plants, have been used in folk medicine for centuries, and for some decades they have increasingly aroused the interest of researchers because they are composed of compounds with different purposes such as antimicrobial. The objective of the work was to evaluate the efficacy of essential oils in the elimination of bacteria present in the air in the laboratories of Universidade Fernando Pessoa, used in microbiology classes. It is intended to contribute to an improvement in the microbiological quality of indoor air in laboratories. Initially a characterization of the laboratories was carried out, regarding the type of bioaerosols present in the air. Subsequently, air samples were collected before applying the mixture of essential oils. After counting the Colony Forming Units formed after incubation of the culture media, each colony morphotype was spiked in a chromogenic medium and characterized in relation to Gram .. The results only demonstrated the effectiveness of the spray of essential oils, and in some samples there was a decrease of more than 40% in the number of UFC. With that, we conclude that the mixture of essential oils used had a good efficiency and contributes to the improvement of indoor air quality.
Description
Keywords
Qualidade do ar Óleos essenciais Bioaerossois Air quality Essential oils Biaerosols