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URI permanente para esta coleçãohttps://rigalileo.itegam.org.br/handle/123456789/6

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Autor: search.filters.author.SILVA, Simone daAssunto: search.filters.subject.Ciências Biológicas

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Agora exibindo 1 - 2 de 2
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    Insecticidal and juvenilizing activity tests of Euphorbia tirucalli Latex on Aedes aegypti Larvae. Micropropagation and new potential for biological activity
    (Instituto de Tecnologia e Educação Galileo da Amazônia, 2024) SILVA, Simone da; LEITE, Jandecy Cabral
    Euphorbia tirucalli is a succulent species used for various applications, including vector control of mosquitoes in Africa and Asia. This study analyzed the insecticidal and juvenilizing effects of the aqueous fraction of latex obtained from explants micropropagated with 6-Benzylaminopurin (6-BA) and Norbixin, under different light fluences. Latex was extracted by ultrasonic methods and tested on Aedes aegypti larvae development. No insecticidal or juvenilizing activity was observed. New experiments will be conducted with variations in red light exposure time and higher concentrations of extracts, due to the high prevalence of dengue in Rio de Janeiro.
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    Investigation of the antifungal action of natural products on seeds of Euterpe oleraceae: Bioproduct Potential
    (Instituto de Tecnologia e Educação Galileo da Amazônia, 2024) SILVA, Simone da; LEITE, Jandecy Cabral
    Açaí seeds (Euterpe oleraceae) are used in handicrafts by urban indigenous Sateré-Mawé in Rio de Janeiro, Brazil. However, fungal contamination compromises their conservation, leading to losses of approximately 47% of the purchased seeds. This study tested the antifungal activity of aqueous extracts from Bixa orellana (Annatto), Punica granatum (Pomegranate), Tagetes erecta (Marigold), and Euphorbia tirucalli (Firestick) on açaí seeds. Only E. tirucalli showed significant antifungal action (21.75%) at the tested concentration, indicating potential for seed preservation. Based on these findings, further trials will be conducted within the One Health perspective.