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Advisor(s)
Abstract(s)
Os óleos essenciais (OEs) são metabólitos secundários, produzidos por
plantas aromáticas e medicinais, com propriedades biológicas interessantes
como a capacidade antimicrobiana e antioxidante. Neste trabalho,
foi determinada a atividade antimicrobiana e a capacidade antioxidante
dos OEs de manjericão (Ocimum basilicum), canela (Cinnamomum cassia
(L.) J. Presl e Cinnamomum zeylanicum Blume) e alecrim (Rosmarinus
officinalis L.). O OE da C. cassia mostrou ter a melhor atividade antimicrobiana
contra Escherichia coli, Staphylococcus aureus e Penicillium
spp. enquanto o óleo de C. Zeylanicum exibiu a melhor capacidade antioxidante
pelo método da captação do DPPH• (radical 2,2-difenil- 1-picrilhidrazil)
e pelo ensaio do branqueamento do -caroteno. No entanto,
todos os OEs analisados apresentaram boa atividade biológica, revelando
um grande potencial para serem aplicados como aditivos naturais, diretamente
aos alimentos ou, indiretamente, a embalagens ativas.
Essential oils are secondary metabolites, produced by aromatic and medicinal plant species, with interesting biological properties such as antimicrobial and antioxidant activities. In this research the antimicrobial and antioxidant capacities of the essential oils of basil (Ocimum basilicum L.), cinnamon (Cinnamomum cassia (L.) J. Presl and Cinnamomum zeylanicum) and rosemary (Rosmarinus officinalis L.) were evaluated. C. cassia essential oil presented the highest antimicrobial against Escherichia coli, Staphylococcus aureus and Penicillium spp. while the C. zeylanicum essential oil presented the highest antioxidant capacity by the DPPH• (2,2- diphenyl-1-picrylhydrazyl radical) scavenging method and the -carotene bleaching assay. However, all the analysed essential oils presented high biological activity, revealing a great potential to be applied as food additives, directly to food or, indirectly, to active packaging.
Essential oils are secondary metabolites, produced by aromatic and medicinal plant species, with interesting biological properties such as antimicrobial and antioxidant activities. In this research the antimicrobial and antioxidant capacities of the essential oils of basil (Ocimum basilicum L.), cinnamon (Cinnamomum cassia (L.) J. Presl and Cinnamomum zeylanicum) and rosemary (Rosmarinus officinalis L.) were evaluated. C. cassia essential oil presented the highest antimicrobial against Escherichia coli, Staphylococcus aureus and Penicillium spp. while the C. zeylanicum essential oil presented the highest antioxidant capacity by the DPPH• (2,2- diphenyl-1-picrylhydrazyl radical) scavenging method and the -carotene bleaching assay. However, all the analysed essential oils presented high biological activity, revealing a great potential to be applied as food additives, directly to food or, indirectly, to active packaging.
Description
Keywords
Óleos Essenciais Embalagens Alimentares Embalagens Ativas Promoção da Saúde Alimentaçao Saudável Composição dos Alimentos Saúde Pública Portugal
Pedagogical Context
Citation
Boletim Epidemiológico Observações. 2016;5(Supl 8):29-30
Publisher
Instituto Nacional de Saúde Doutor Ricardo Jorge, IP
