Estudos de propriedades antitermíticas de extratos brutos de madeira e casca de espécies florestais da Amazônia Central, Brasil

Barbosa, Ana Paula; Nascimento, Cristiano Souza do; Morais, José Wellington de

doi:10.1590/s0044-59672007000200006

Cited by 19 publications

(7 citation statements)

References 8 publications

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“…Matos (2006) also identified triterpenoids in Cedrela fissilis and, later, Matos et al (2010) report an important triterpenoid in the genus Cedrela; limonoid, which has strong bioactivity against Lepidoptera. This compound was also reported by Leite et al (2005), Ambrozin et al (2006) and Barbosa et al (2007). Zavan (2005) investigated the insecticidal properties of Cedrela fissilis on leaf-cutting ants and isolated the flavonoid catechin, which is a condensed tannin and was also found in this work.…”

Section: Cedrela Fissilissupporting

confidence: 83%

Comparison of the phytochemical profiles of five native plant species in two different forest formations

et al. 2019

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The expression of chemical compounds by individual plants of the same species in different locations may be affected by abiotic factors resulting in differences in the production of allelopathic compounds. The objective of this study was to compare the phytochemical profiles of plant species from two different forest formations in the state of Paraná, Brazil. The forest formations were Seasonal Semideciduous Forest (SSF) and Lowland Ombrophilous Dense Forest (LODF), and the five study species were Jacaranda micrantha, Cecropia pachystachya, Mimosa bimucronata, Schinus terebinthifolius and Cedrela fissilis. Secondary metabolites were extracted by exhaustive extraction with methanol, and the crude extract was fractionated using column chromatography. The fractions were used to calculate the retention factor of the main compounds using thin layer chromatography and phytochemical tests. The classes of compounds identified were practically the same among the analyzed species, however, at different levels of concentration. The type of tannins found in S. terebinthifolius differed between the two forest formations.

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Section: Cedrela Fissilissupporting

confidence: 83%

Comparison of the phytochemical profiles of five native plant species in two different forest formations

et al. 2019

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“…They already have applications in the tanning of hides, in the oil industry, as a dispersing agent to control the viscosity of clays in the drilling of wells, being also used in the treatment of water supply and waste, and in the manufacture of paints and adhesives [1]. The research covers the effectiveness of different types of tannins that have been proven to successfully inhibit wood decay fungi, such as wood immunizers, alone [2,4,[27][28][29][30][31]; combined with other chemicals with established antifungal efficacy [26]. However, one of the biggest problems observed with tannins and their derivatives is that they are difficult to stick to the wood after treatment, although attempts have been made to retain them using additives [12,28].…”

Section: Tablementioning

confidence: 99%

Preservative Treatments on Wood and Their Effects on Metal Fasteners

Dias¹,

Barreiros²

2022

Engineered Wood Products for Construction

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Wood as a building material has characteristics that make it attractive environmentally compared to other materials. It is an economic, historical and sustainable material. Many species of wood are naturally resistant to the action of the organisms that degrade them. However, species with this natural resistance are unable to meet the demand for wood and wood-based products, which have been growing year by year. The scarcity of species resistant to biological degradation forced man to use other less durable species, mainly of rapid growth, from reforestation, such as some species of Eucalyptus and Pinus. These species have moderate or no resistance to attack by biological agents and require preservative treatments. And to increase the life span of these fast-growing woods, protecting them from fungi, insects and other xylophagous organisms, several preservative agents are used, these compounds being highly toxic to these biodeteriorating organisms. It is known that the effectiveness of traditional wood preservation systems is due to the biocidal effect of the products used, however, they pollute the environment. Thus, there is an increasing need to develop effective preservative chemicals, non-toxic to humans and the environment.

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“…O potencial dos extrativos do lenho e da casca das espécies amazônicas madeireiras Pouteria guianensis, Buchenavia parviflora e Dinizia excelsa foi comprovado como repelente contra o ataque de cupins Nasutitermes sp., utilizando-se como substrato a espécie Simarouba amara, de baixa durabilidade (BARBOSA; NASCIMENTO; MORAIS, 2007). Em estudo com a espécie Mimosa caesalpiniifolia foi verificada a presença de tanino e atividade inseticida de extrato aquoso em concentrações de 7 e 10%, afetando a taxa intrínseca de aumento da população e o tempo médio de geração de mosca-branca (Bemisia tabaci) (CAVALCANTE, MOREIRA;VASCONCELOS, 2006).…”

Section: Compostos Secundários Como Princípios Ativosunclassified

Plantas com potencial inseticida: enfoque em espécies amazônicas

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Santos²,

Sanches

et al. 2021

Ciênc. Florest.

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Um imenso potencial para a produção de compostos secundários e potencial inseticida vem sendo estudado dentro da ampla diversidade que a flora brasileira apresenta. Dessa forma, o presente estudo objetivou apresentar informações sobre o potencial das plantas no controle de insetos, através de uma revisão bibliográfica. Os primeiros inseticidas botânicos utilizados foram a nicotina, a piretrina, a rotenona, a sabadilla e a rianodina. A partir de então foram estudados vários compostos e espécies, como a azadiractina, extraída do nim, alcaloides das Anonaceaes, rotenona em Derris urucu, Piperaceae com as amidas, entre outros registros com as espécies amazônicas. Observa-se então que as espécies amazônicas compõem uma rica fonte de pesquisa e muitos dos exemplares estudados mostraram-se promissores para o desenvolvimento de inseticidas. Entretanto, novas pesquisas, principalmente em campo, devem ser realizadas para prospecção de novas espécies, buscando compostos seletivos e consequentemente com menor contaminação ambiental, para utilização tanto direta, quanto para o desenvolvimento de novos inseticidas comerciais.

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Estudos de propriedades antitermíticas de extratos brutos de madeira e casca de espécies florestais da Amazônia Central, Brasil

Cited by 19 publications

References 8 publications

Comparison of the phytochemical profiles of five native plant species in two different forest formations

Comparison of the phytochemical profiles of five native plant species in two different forest formations

Preservative Treatments on Wood and Their Effects on Metal Fasteners

Plantas com potencial inseticida: enfoque em espécies amazônicas

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