Wood Preservation Based on Neem Oil: Evaluation of Fungicidal and Termiticidal Effectiveness

Machado, Gilmara de Oliveira; Cookson, L.J.; Christofóro, André Luis; Polito, Wagner Luiz; Silva, Marcio Rogério da; Júnior, Carlito Calil; Lahr, Francisco Antônio Rocco

doi:10.13073/fpj-d-13-00050

Cited by 11 publications

(12 citation statements)

References 13 publications

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“…The results indicate that the crude extracts are not toxic when applied at the low concentration level, even may perform an attractant effect to termites. This finding was supported by Machado et al (2013) who examine oil of the neem tree (Azadirachta indica) showing a poor performance against termites. It is the fact that the repellent or non-repellent of crude extracts are also a function of concentration, not only the achievement of any particular compounds.…”

Section: Termite Response Testmentioning

confidence: 73%

Crude extracts of two different leaf plant species and their responses against subterranean termite Coptotermes formosanus

2016

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Abstract. Indrayani Y, Muin M, Yoshimura T. 2016. Crude extracts of two different leaf plant species and their responses against subterranean termite Coptotermes formosanus. Nusantara Bioscience 8: 226-231. Crude extracts of plants consist of various chemical compounds useful for many purposes and their effectiveness depend on the comprising active ingredients and applied concentrations. This study was conducted to determine the chemical compounds of plant leaf extracts and examine their responses against subterranean termite Coptotermes formosanus Shiraki. Two tropical plant species [clove (Syzygium aromaticum) and cajuput (Melaleuca leucadendra)] were extracted with 70% ethanol solvent. As the two different plant crude extracts contain eugenol, though to have termiticidal performance, various concentrations (0.1%, 0.05%, and 0.01%) based on their eugenol contents were prepared with filter paper samples for the test. The termite mortality and mass loss of extract-treated and untreated control filter paper samples were determined after four weeks exposure. Results showed that crude extracts of different plant species showed different responses against the subterranean termites although they were applied at the same eugenol-based concentration. At the concentration of 0.1%, the crude extract of S. aromaticum caused termite mortality and consumption rates of 100% and 0.3%, respectively. Whilst, the crude extract of M. leucadendra caused significantly lower termite mortality (36.8%) and higher consumption (9.1%). Samples with lower eugenolbased concentration showed lower termite mortality and may have attractive effects on termites as indicated by higher consumption at the concentration of 0.01% compared to untreated controls. These results suggested that crude extracts of different two leaf species had different effects on subterranean termite C. formosanus eventhough they were applied at the same eugenol-based concentrations.

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Section: Termite Response Testmentioning

confidence: 73%

Crude extracts of two different leaf plant species and their responses against subterranean termite Coptotermes formosanus

2016

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“…), especie típica de florestas tropicales abiertas, cuya madera es muy atacada por hongos e insectos (Paes et al 2012). Las mejores concentraciones de aceite de neem usadas en pino (Pinus radiata D.Don) y ceiba se mostraron elevadas (50 %), lo que suele explicar que una protección más durable y efectiva contra las termitas y los hongos no debe ocurrir en concentraciones más bajas (Machado et al 2013). Además de haber la necesidad del uso de más altas concentraciones de aceite de neem, las maderas tratadas con este aceite, y en contacto con el suelo, sufrieron deterioro con el tiempo; por eso, la propuesta de optimización ha sido el uso del aceite de neem junto a co-biocidas reforzantes (Machado et al 2013).…”

Section: Insecticida Y Fungicidaunclassified

“…Las mejores concentraciones de aceite de neem usadas en pino (Pinus radiata D.Don) y ceiba se mostraron elevadas (50 %), lo que suele explicar que una protección más durable y efectiva contra las termitas y los hongos no debe ocurrir en concentraciones más bajas (Machado et al 2013). Además de haber la necesidad del uso de más altas concentraciones de aceite de neem, las maderas tratadas con este aceite, y en contacto con el suelo, sufrieron deterioro con el tiempo; por eso, la propuesta de optimización ha sido el uso del aceite de neem junto a co-biocidas reforzantes (Machado et al 2013). A pesar del interés en el aceite de neem como agente insecticida, biopesticida y también por propiedades terapéuticas (anticáncer y microbicida) (Fernandes et al 2019), pocos estudios recientes se dedican a estudiar más detalladamente su perfil como preservador de maderas.…”

Section: Insecticida Y Fungicidaunclassified

Deterioro y preservación de maderas mediante el uso de preservadores naturales de potencial interés en Brasil

Gonçalves

Lahr

2020

Bosque (Valdivia)

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“…Forest biomass is an easily available resource in Brazil at competitive costs, which it has been a focus for several studies. The forest biomass presents potential for new energy generation and benefits for the reduction of greenhouse effect gases (MACHADO et al, 2013). But, to establish the mass production of activated carbon from biomass, it is important to secure the resources from the viewpoint of supply chain costs (XIA et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Morphological and Elementary Evaluation of Wooden Carbonaceous Materials From Activated Carbon Industry

Banczek

Brugnera

Christofóro

et al. 2019

NAT

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AVALIAÇÃO MORFOLÓGICA E ELEMENTAR DE MATERIAIS CARBONÁCEOS DE MADEIRA DA INDÚSTRIA DE CARBONO ATIVADA A preocupação mundial na redução dos gases de efeito estufa para a atmosfera, combinada com leis ambientais mais rigorosas, tem levado a um aumento dos estudos sobre a energia renovável. Esta pesquisa teve como objetivo caracterizar lascas de madeira e carvão ativado por microscopia eletrônica de varredura (MEV) e espectroscopia de energia dispersiva (EDS). Os cavacos são oriundos de uma floresta de Pinus elliottii voltada para fins energéticos e foram queimados em uma fornalha de uma caldeira de geração de vapor. Esse vapor gerado pela caldeira em fornalhas apropriadas é utilizado na ativação de carvão vegetal por pequenos produtores regionais. MEV indicou um aumento na porosidade do carvão vegetal com o processo de ativação, e a análise EDS indicou que tanto os cavacos quanto os carvões, com e sem ativação, não apresentaram contaminantes, como os metais pesados. Este estudo revelou uma baixa toxicidade dos materiais lignocelulósicos à base de Pinus elliottii. A queima de cavacos de madeira na caldeira e o processo de ativação de carvão vegetal não apresentaram riscos ambientais.Palavras-chave: energia florestal, carbonização, carvão ativado, metais, porosidade. ABSTRACT: The worldwide concern of reducing greenhouse gases into the atmosphere combined with more stringent environmental laws has led to an increase in studies of renewable energy. This research aimed to characterize wood chips and activated charcoal by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The chips came from an energy forest of Pinus elliottii and were burned in the furnace of a boiler for steam generation. This steam generated by the boiler in appropriate furnaces is used in the activation of wood charcoal from small regional producers. SEM showed an increase in the porosity of the charcoal with the activation process, and EDS analysis indicated both chips and charcoals, with and without activation, have no contaminants, such as heavy metals. This study revealed a low toxicity of lignocellulosic materials based on Pinus elliottii. The burning of wooden chips in the boiler as well as the activation process of wood charcoal did not present apparent environmental risks.Keywords: forestry energy, carbonization, activated carbon, metals, porosity.

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Wood Preservation Based on Neem Oil: Evaluation of Fungicidal and Termiticidal Effectiveness

Cited by 11 publications

References 13 publications

Crude extracts of two different leaf plant species and their responses against subterranean termite Coptotermes formosanus

Crude extracts of two different leaf plant species and their responses against subterranean termite Coptotermes formosanus

Deterioro y preservación de maderas mediante el uso de preservadores naturales de potencial interés en Brasil

Morphological and Elementary Evaluation of Wooden Carbonaceous Materials From Activated Carbon Industry

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