Análise química da Cecropia adenopus (EMBAÚBA)

• Autor(a) principal: Londe, Geraldo Batista
• Data de Publicação: 2004
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFU
• Texto Completo: https://repositorio.ufu.br/handle/123456789/27055; http://dx.doi.org/10.14393/ufu.di.2004.21
• topic: Madeira; Cecropia adenopus; Lignina; Celulose; Extrativos voláteis; Wood; Cecropia adenopus; Lignin; Cellulose; Volatiles extractives; CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA

Cecropia adenopus (embaúba) is a plant of the family cecropiaceae (moraceae), popularly known as embaúba, characteristic of forest margins or reforested areas. It has rapid development and is abundant throughout the Brazilian territory. This plant is widely used in folk medicine to treat diabetes and is also useful against cough and bronchitis. Increases the heart muscle energy without multiplying the heartbeat. The juice obtained from the root is a powerful diuretic. In this study we analyzed the main macromolecular components of wood, the composition of the main volatile constituents and the allelopathic power of embaúba, cultivated in the region of Uberaba-MG. The composition of wood chemistry was: 59.20% a-cellulose, 4.50% hemicellulose-A, 8.20% hemicellulose-B, 25.10% lignin, 3.86% extractives and 0 , 30% ash. The cellulose content was relatively high, indicating that this wood has great potential for pulp production. Ground Wood Lignin (MLM) was isolated and analyzed by Fourier Transform Infrared (FVI), Proton and Carbon-13 Nuclear Magnetic Resonance (1 H and 13 C NMR) and chemical analysis methods. moist. The MML had a minimum formula of C9H6; 86O2 (H2O) i; 3 (OCH3) 1) 15 and average molar mass of 204.71 g mof1, which is atypical as the expected value for methoxy group unit content of conifers would be below 1.00 / C9. The main constituents of dichloromethane extracts identified by Mass Spectrometry Coupled Gas Chromatography (GCEM) were in the shell: oct-1-en-3-ol, rans-bergamotene, geranyl acetone and long chain alkanes; on leaves: cA-nerolidol, farnesol, geranyl acetone, farnesyl acetone, heptadecanal and long chain alkanes; at the roots: farnesol, geranyl acetone, farnesyl acetone and pentadecanal. In all of these extracts the highest percentage was fatty acids such as palmitic acid. The allelopathic potential of these extracts was verified by germination bioassays and measurement of shoot development of P. ma-ximum (colonization grass). It observed a greater effect for root extracts with incidence at 100 ppm.