Chemical and structural characterization of Myracrodruon urundeuva barks aiming at their potential use and elaboration o
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ORIGINAL ARTICLE
Chemical and structural characterization of Myracrodruon urundeuva barks aiming at their potential use and elaboration of a sustainable management plan Thaís Brito Sousa 1,2 & Graciene da Silva Mota 1 & Elesandra da Silva Araujo 1 & Jéfyne Campos Carréra 3 & Eliandra Pereira Silva 1 & Sebastião Gabriel Souza 1 & Mário Sérgio Lorenço 1 & Fábio Akira Mori 1 Received: 30 July 2020 / Revised: 7 October 2020 / Accepted: 16 October 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The objective of this work was to characterize chemically and structurally barks from Myracrodruon urundeuva Allemão in order to provide information that values its use and that is relevant to elaborating sustainable management plan. Anatomy and thickness of the periderm and secondary phloem, and also the bark histochemistry were analyzed. Ash, extractive, suberin, lignin, and polysaccharide contents were determined. The mineral composition of the ashes, the phenolic composition, and the antioxidant activity of the bark extracts were also analyzed. The M. urundeuva bark presented rhytidome frequently anastomosing periderm layers, forming a reticulate pattern. It was marked by the presence of secretory ducts and dead phloem between the periderms. Great amount of phenolic content was noted in the outer bark. The average chemical composition of the bark was 26.96% total extractives, 25.38% total lignin, 0.95% suberin, 9.24% ash, and 37.13% polysaccharides. Total phenolic content was 165.90 mg GAE g−1 of extract, flavonoids 91.36 mg catechin g−1 of extract, and tannin content 8.50 mg catechin g−1 of extract. An interesting processing route for the use of the M. urundeuva bark would be to obtain polar extractives, which presented a good antioxidant activity, and ash removal that can be used as fertilizer in forest plantations. Subsequently, use the fibrous structure of these barks as a source of lignocellulosic material for different uses. Keywords Bark anatomy . Extractives . Ash . Lignocellulosic material . Biorefinery
1 Introduction Myracrodruon urundeuva Allemão is a tree species belonging to the Anacardiaceae family commonly known as “aroeira.” Its natural occurrence extends through the Northeast, Southeast, and Midwest regions of Brazil to the Chaco Region of Bolivia, Paraguay, and Argentina [1, 2]. It is more frequent in northeastern Brazil, west of the states of Bahia, Minas Gerais, and São Paulo, and south of the states of Mato Grosso do Sul, Mato
* Thaís Brito Sousa [email protected] 1
Department of Forest Science, Federal University of Lavras, Lavras, Minas Gerais, Brasil
2
Federal University of Piauí, Bom Jesus, Piauí, Brasil
3
Department of Biology, Federal University of Lavras, Lavras, Minas Gerais, Brasil
Grosso, and Goiás, which corresponds to the Caatinga and Cerrado biomes [3]. The wood of this species is highly appreciated due to its high durability and difficulty in degradation, which makes it excellent for use in civil construction as posts or ties, in the manufacturing
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