Identification of the secretory structures present in the trunk of Protium Burm. f. (Burceraceae) exuding oil-resin / Identificação das estruturas secretoras presentes no tronco da Protium Burm. f. (Burceraceae) que exalam óleo-resina

• Autor(a) principal: Tostes, Luciedi de Cássia Leôncio
• Data de Publicação: 2020
• Outros Autores: Gonçalves, José Francisco de Carvalho, Lins, Alba Lúcia Ferreira de Almeida, Neto, Salustiano Vilar da Costa, Ferreira, Amanda Maria S. d., Castelo, Adriano, Dias, Maria Rute de Lima
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Brazilian Applied Science Review
• Texto Completo: https://ojs.brazilianjournals.com.br/ojs/index.php/BASR/article/view/11446
• topic: Wood; Oil; Protium. lvente. Ultrassom.

P. altsonii Sandwith and P. tenuifolium (Engl.) Engl. has representatives of economic importance in the state of Amapá, called "Amazon breu". The objective was to perform the morphological characterization, besides the identification of the secretory structures present in P. altsonii and P. tenuifolium wood, which are responsible for the conduction of the secondary metabolites identified in the oil may contribute to the utilization and better use of this species by the chemical and pharmacological industries. The study was conducted in the region of the Iratapuru - SDR Sustainable Development Reserve in the municipality of Laranjal do Jari. The wood samples were identified and the specimens were saturated and boiled in a 1:1 ratio of water and glycerin for approximately two hours for softening. Subsequently, micrometric sections were obtained with the aid of a slip microtome, 15 to 20 µm thick. These sections were divided into two groups, one of them subjected to clarification and staining and the other, natural for observing cell inclusions and histochemical tests with Sudam solution. The bark, in longitudinal section, has numerous heterodiametric cells, with secretory channels and cells with content. In histochemical tests presence of lipids, mucilage and phenolic substances. Presence of simple intercellular channels secreting oil in tangential longitudinal section and prismatic crystals within square or erect ray cells in radial longitudinal section. This study concludes that trunk morphology, wood color and odor are important traits for field species identification, the presence of intercellular channels in the rays of both species guarantees the distribution of resin oil along the stem, so any trunk injury allows for immediate exudation of the oil, and the anatomical characterization of the species is very similar to other species of the genus.